UNITED STATES SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

þ		Quarterly Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

For the Quarterly Period ended March 31, 2007

o		Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

For the transition period from                      to                     

PERMIAN BASIN ROYALTY TRUST

Texas				75-6280532
(State or Other Jurisdiction of				(I.R.S. Employer Identification No.)
Incorporation or Organization)

Bank of America, N.A.
Trust Department
901 Main Street
Dallas, Texas 75202

(Address of Principal Executive
Offices; Zip Code)

(214) 209-2400
(Registrant’s Telephone Number, Including Area Code)

     Indicate by check mark whether the registrant: (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports) and (2) has been subject to such filing requirements for the past 90 days. Yes þ  No o

     Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, or a non-accelerated filer. See definition of “accelerated filer and large accelerated filer” in Rule 12b-2 of the Exchange Act.

Large accelerated filer o          Accelerated filer þ          Non-accelerated filer o

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act. Yes o  No þ

     Number of Units of beneficial interest of the Trust outstanding at May 1, 2007: 46,608,796.

 

 

PERMIAN BASIN ROYALTY TRUST

PART I — FINANCIAL INFORMATION

Item 1. Financial Statements

The condensed financial statements included herein have been prepared by Bank of America, N.A. as Trustee for the Permian Basin Royalty Trust, without audit, pursuant to the rules and regulations of the Securities and Exchange Commission. Certain information and footnote disclosures normally included in annual financial statements have been condensed or omitted pursuant to such rules and regulations, although the Trustee believes that the disclosures are adequate to make the information presented not misleading. It is suggested that these condensed financial statements be read in conjunction with the financial statements and the notes thereto included in the Trust’s latest annual report on Form 10-K. In the opinion of the Trustee, all adjustments, consisting only of normal recurring adjustments, necessary to present fairly the assets, liabilities and trust corpus of the Permian Basin Royalty Trust at March 31, 2007, and the distributable income and changes in trust corpus for the three-month periods ended March 31, 2007 and 2006 have been included. The distributable income for such interim periods is not necessarily indicative of the distributable income for the full year.

Deloitte & Touche LLP, an independent registered public accounting firm, has made a limited review of the condensed financial statements as of March 31, 2007 and for the three-month periods ended March 31, 2007 and 2006 as stated in their report included herein.

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

Unit Holders of Permian Basin Royalty Trust and
Bank of America, N.A., Trustee

We have reviewed the accompanying condensed statement of assets, liabilities and trust corpus of Permian Basin Royalty Trust as of March 31, 2007, and the related condensed statements of distributable income and changes in trust corpus for the three-month periods ended March 31, 2007 and 2006. These condensed financial statements are the responsibility of the Trustee.

We conducted our reviews in accordance with the standards of the Public Company Accounting Oversight Board (United States). A review of interim financial information consists principally of applying analytical procedures and making inquiries of persons responsible for financial and accounting matters. It is substantially less in scope than an audit conducted in accordance with the standards of the Public Company Accounting Oversight Board (United States), the objective of which is the expression of an opinion regarding the financial statements taken as a whole. Accordingly, we do not express such an opinion.

As described in Note 1 to the condensed financial statements, these condensed financial statements have been prepared on a modified cash basis of accounting, which is a comprehensive basis of accounting other than accounting principles generally accepted in the United States of America.

Based on our reviews, we are not aware of any material modifications that should be made to such condensed financial statements for them to be in conformity with the basis of accounting described in Note 1.

We have previously audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), the statement of assets, liabilities and trust corpus of Permian Basin Royalty Trust as of December 31, 2006, and the related statements of distributable income and changes in trust corpus for the year then ended (not presented herein); and in our report dated March 13, 2007, we expressed an unqualified opinion on those financial statements. In our opinion, the information set forth in the accompanying condensed statement of assets, liabilities and trust corpus as of December 31, 2006, is fairly stated, in all material respects, in relation to the statement of assets, liabilities and trust corpus from which it has been derived.

/s/ Deloitte & Touche LLP

Dallas, Texas
May 8, 2007

PERMIAN BASIN ROYALTY TRUST

CONDENSED STATEMENTS OF ASSETS, LIABILITIES AND TRUST CORPUS

		March 31,
		2007				December 31,
		(Unaudited)				2006
ASSETS
Cash and short-term investments		$	4,664,349			$	5,135,136
Net overriding royalty interests in producing oil and gas properties (net of accumulated amortization of $9,571,673, and $9,536,002 at March 31, 2007 and December 31, 2006, respectively)			1,403,543				1,439,214
TOTAL ASSETS		$	6,067,892			$	6,574,350
LIABILITIES AND TRUST CORPUS
Distribution payable to Unit holders		$	4,664,349			$	5,135,136
Commitments and contingencies
Trust corpus – 46,608,796 Units of beneficial interest authorized and outstanding			1,403,543				1,439,214
TOTAL LIABILITIES AND TRUST CORPUS		$	6,067,892			$	6,574,350

The accompanying notes to condensed financial statements are an integral part of these statements.

PERMIAN BASIN ROYALTY TRUST

CONDENSED STATEMENTS OF DISTRIBUTABLE INCOME (UNAUDITED)

		THREE MONTHS ENDED				THREE MONTHS ENDED
		March 31, 2007				March 31, 2006
Royalty income		$	13,900,543			$	18,917,927
Interest income			30,785				35,513
		$	13,931,328			$	18,953,440
General and administrative expenditures			(322,276	)			(300,467	)
Distributable income		$	13,609,052			$	18,652,973
Distributable income per Unit (46,608,796 Units)		$	.29			$	.40

The accompanying notes to condensed financial statements are an integral part of these statements.

PERMIAN BASIN ROYALTY TRUST

CONDENSED STATEMENTS OF CHANGES IN TRUST CORPUS (UNAUDITED)

		THREE MONTHS ENDED				THREE MONTHS ENDED
		March 31, 2007				March 31, 2006
Trust corpus, beginning of period		$	1,439,214			$	1,610,630
Amortization of net overriding royalty interests			(35,671	)			(40,474	)
Distributable income			13,609,052				18,652,973
Distributions declared			(13,609,052	)			(18,652,973	)
Total Trust Corpus, end of period		$	1,403,543			$	1,570,156
Distributions per Unit		$	.29			$	.40

The accompanying notes to condensed financial statements are an integral part of these statements.

PERMIAN BASIN ROYALTY TRUST

NOTES TO CONDENSED FINANCIAL STATEMENTS (UNAUDITED)

1.		BASIS OF ACCOUNTING
		The Permian Basin Royalty Trust (“Trust”) was established as of November 1, 1980. The net overriding royalties conveyed to the Trust include: (1) a 75% net overriding royalty carved out of Southland Royalty Company’s fee mineral interests in the Waddell Ranch in Crane County, Texas (the “Waddell Ranch properties”); and (2) a 95% net overriding royalty carved out of Southland Royalty Company’s major producing royalty interests in Texas (the “Texas Royalty properties”). The net overriding royalty for the Texas Royalty properties is subject to the provisions of the lease agreements under which such royalties were created. The financial statements of the Trust are prepared on the following basis:

	•		Royalty income recorded for a month is the amount computed and paid to Bank of America, N.A. (“Trustee”) as Trustee for the Trust by the interest owners: Burlington Resources Oil & Gas Company LP (“BROG”), a subsidiary of ConocoPhillips for the Waddell Ranch properties and Riverhill Energy Corporation (“Riverhill Energy”), formerly a wholly owned subsidiary of Riverhill Capital Corporation (“Riverhill Capital”) and formerly an affiliate of Coastal Management Corporation (“CMC”), for the Texas Royalty properties. Schlumberger Technology Corporation (“STC”) currently conducts all field, technical and accounting operations on behalf of BROG with regard to the Waddell Ranch properties. Riverhill Energy currently conducts the accounting operations for the Texas Royalty properties. Royalty income consists of the amounts received by the owners of the interest burdened by the net overriding royalty interests (“Royalties”) from the sale of production less accrued production costs, development and drilling costs, applicable taxes, operating charges, and other costs and deductions multiplied by 75% in the case of the Waddell Ranch properties and 95% in the case of the Texas Royalty properties.
			As was previously reported, in February 1997, BROG sold its interest in the Texas Royalty properties to Riverhill Energy.
			The Trustee has been advised that in the first quarter of 1998, STC acquired all of the shares of stock of Riverhill Capital. Prior to such acquisition by STC, CMC

			and Riverhill Energy were wholly-owned subsidiaries of Riverhill Capital. The Trustee has further been advised that in connection with STC’s acquisition of Riverhill Capital, the shareholders of Riverhill Capital acquired ownership of all of the shares of stock of Riverhill Energy. Thus, the ownership in the Texas Royalty properties referenced above remained in Riverhill Energy, the stock ownership of which was acquired by the former shareholders of Riverhill Capital.
	•		Trust expenses recorded are based on liabilities paid and cash reserves established out of cash received or borrowed funds for liabilities and contingencies.
	•		Distributions to Unit holders are recorded when declared by the Trustee.
	•		Royalty income is computed separately for each of the conveyances under which the Royalties were conveyed to the Trust. If monthly costs exceed revenues for any conveyance (“excess costs”), such excess cannot reduce royalty income from other conveyances, but is carried forward with accrued interest to be recovered from future net proceeds of that conveyance.

		The financial statements of the Trust differ from financial statements prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”) because revenues are not accrued in the month of production and certain cash reserves may be established for contingencies which would not be accrued under GAAP. Amortization of the Royalties calculated on a unit-of-production basis is charged directly to trust corpus. This comprehensive basis of accounting other than GAAP corresponds to the accounting permitted for royalty trusts by the U.S. Securities and Exchange Commission as specified by Staff Accounting Bulletin Topic 12:E, Financial Statements of Royalty Trusts.
		New Accounting Pronouncements
		In February 2006, the FASB issued SFAS No. 155, Accounting for Certain Hybrid Financial Instruments – an amendment of FASB Statements No. 133 Accounting for Derivative Instruments and No. 140 Accounting for Transfers and Servicing of Financial Assets and Extinguishments of Liabilities. This statement resolves issues addressed in Statement 133 Implementation Issue No. D1, Application of Statement 133 to Beneficial interests in Securitized Financial Assets. This statement is effective for all financial instruments acquired or issued after the beginning of an entity’s first fiscal year that begins after September 15, 2006. The Trust has no financial instruments and

		accordingly, the adoption of this new Standard did not impact the financial statements of the Trust.
		In March 2006, the FASB issued SFAS No. 156, Accounting for Servicing of Financial Assets – an amendment of FASB Statements No. 140 Accounting for Transfers and Servicing of Financial Assets and Extinguishments of Liabilities. This statement requires an entity to recognize a servicing asset or servicing liability each time it undertakes an obligation to service a financial asset by entering into a servicing contract in certain situations. This statement is effective as of the beginning of an entity’s first fiscal year that begins after September 15, 2006. The adoption of this statement did not have an effect on the Trust’s financial statements.
		In July 2006, the FASB issued FASB Interpretation No. 48 (“FIN 48”), “Accounting for Uncertainty in Income Taxes,” which clarifies the accounting for uncertainty in income taxes recognized in the financial statements in accordance with SFAS No. 109, “Accounting for Income Taxes.” FIN 48 is effective for fiscal years beginning after December 15, 2006. The adoption of this statement did not have an effect on the Trust’s financial statements.
		In September 2006, the FASB issued SFAS No. 157, Fair Value Measurements. This statement defines fair value, establishes a framework for measuring fair value in generally accepted accounting principles (GAAP), and expands disclosures about fair value measurements. This statement is effective for financial statements issued for fiscal years beginning after November 15, 2007. The Trustee does not believe that the adoption of this statement will have a material effect on the Trust’s financial statements.

		In February 2007, the FASB issued SFAS No. 159, The Fair Value Option for Financial Assets and Financial Liabilities-Including an amendment of FASB Statement No. 115. This statement permits entities to choose to measure many financial instruments and certain other items at fair value. This statement is effective as of the beginning of an entity’s first fiscal year that begins after November 15, 2007. The Trustee does not believe that the adoption of this statement will have a material effect on the Trust’s financial statements.
2.		FEDERAL INCOME TAXES
		For Federal income tax purposes, the Trust constitutes a fixed investment trust which is taxed as a grantor trust. A grantor trust is not subject to tax at the trust level. The Unit holders are considered to own the Trust’s income and principal as though no trust were in existence. The income of the Trust is deemed to have been received or accrued by each Unit holder at the time such income is received or accrued by the Trust and not when distributed by the Trust.
		The Royalties constitute “economic interests” in oil and gas properties for Federal income tax purposes. Unit holders must report their share of the revenues from the Royalties as ordinary income from oil and gas royalties and are entitled to claim depletion with respect to such income.
		The Trust has on file technical advice memoranda confirming the tax treatment described above.
		The classification of the Trust’s income for purposes of the passive loss rules may be important to a Unit holder. Royalty income generally is treated as portfolio income and does not offset passive losses.

		The Trustee assumes that some Trust Units are held by a middleman, as such term is broadly defined in U.S. Treasury Regulations (and includes custodians, nominees, certain joint owners, and brokers holding an interest for a custodian in street name). Therefore, the Trustee considers the Trust to be a widely held fixed investment trust (“WHFIT”) for U.S. federal income tax purposes. Bank of America, N.A., 901 Main Street, 17th Floor, Dallas, Texas 75202, telephone number (214) 209-2400, is the representative of the Trust that will provide tax information in accordance with applicable U.S. Treasury Regulations governing the information reporting requirements of the Trust as a WHFIT.
		Unit holders should consult their tax advisors for further information.
3.		STATE TAX CONSIDERATIONS
		All revenues from the Trust are from sources within Texas, which has no individual income tax. However, the franchise tax currently imposed by the state of Texas on corporations (the definition of which generally includes limited liability companies) is partly based on federal taxable income, which will include income from the Trust.
		In May 2006, the State of Texas passed legislation to implement a new margin tax at a rate of 1% to be imposed on gross revenues less certain deductions as specifically set forth in the new legislation. The effective date of the new legislation is January 1, 2008, but the tax generally will be imposed on gross revenues generated in 2007 and thereafter. Entities subject to tax generally include trusts unless otherwise exempt and most other types of entities. Trusts that meet certain statutory requirements are generally from the margin tax as “passive entities.” Although the income of the Trust is passive as it consists primarily of net overriding royalty interests (or net profits interests), there is no clear authority that the Trust satisfies all the margin tax statutory requirements for the exemption for passive entities to apply. Therefore, pending additional legislative action or the issuance of applicable administrative rules promulgated by the Texas Comptroller, it is uncertain whether the Trust would be exempt from the margin tax as a passive entity or subject to the margin tax at the Trust level. Approximately 100% of the Trust’s net profits interest income is generated in Texas.
		If the Trust is exempt from the margin tax at the trust level as a passive entity, each Unit holder that is a business entity subject to the margin tax would generally include its share of the Trust’s revenues in its margin tax computation. If, however, the margin tax is imposed on the Trust at the trust level, each Unit holder would generally exclude its share

		of the Trust’s revenues from its margin tax calculation. Each Unit holder that is a business entity is urged to consult his own tax advisor regarding the requirements for filing state income, franchise and margin tax returns.
4.		SUBSEQUENT EVENTS
		Subsequent to March 31, 2007, the Trust declared a distribution on April 20, 2007 of $.088668 payable on May 14, 2007, to Unit holders of record on April 30, 2007.

Item 2. Trustee’s Discussion and Analysis

Forward Looking Information

Certain information included in this report contains, and other materials filed or to be filed by the Trust with the Securities and Exchange Commission (as well as information included in oral statements or other written statements made or to be made by the Trust) may contain or include, forward looking statements within the meaning of Section 21E of the Securities Exchange Act of 1934, as amended, and Section 27A of the Securities Act of 1933, as amended. Such forward looking statements may be or may concern, among other things, capital expenditures, drilling activity, development activities, production efforts and volumes, hydrocarbon prices and the results thereof, and regulatory matters. Although the Trustee believes that the expectations reflected in such forward-looking statements are reasonable, such expectations are subject to numerous risks and uncertainties and the Trustee can give no assurance that they will prove correct. There are many factors, none of which is within the Trustee’s control, that may cause such expectations not to be realized, including, among other things, factors such as actual oil and gas prices and the recoverability of reserves, capital expenditures, general economic conditions, actions and policies of petroleum-producing nations and other changes in the domestic and international energy markets. Such forward looking statements generally are accompanied by words such as “estimate,” “expect,” “predict,” “anticipate,” “goal,” “should,” “assume,” “believe,” or other words that convey the uncertainty of future events or outcomes.

Three Months Ended March 31, 2007 Compared to Three Months Ended March 31, 2006

For the quarter ended March 31, 2007, royalty income received by the Trust amounted to $13,900,543 compared to royalty income of $18,917,927 during the first quarter of 2006. The decrease in royalty income is primarily attributable to significant decreases in both oil and gas prices.

Interest income for the quarter ended March 31, 2007, was $30,785 compared to $35,513 during the first quarter of 2006. The decrease in interest income is primarily attributable to less funds available for investment. General and administrative expenses during the first quarter of 2007 amounted to $322,276 compared to $300,467 during the first quarter of 2006. The increase in general and administrative expenses can be primarily attributed to increased printing expenses.

These transactions resulted in distributable income for the quarter ended March 31, 2007 of $13,609,052 or $.29 per Unit of beneficial interest. Distributions of $.101215, $.090695 and $.100074 per Unit were made to Unit holders of record as of January 31, 2007, February 28, 2007 and March 30, 2007, respectively. For the first quarter of 2006, distributable income was $18,652,973, or $.40 per Unit of beneficial interest.

Royalty income for the Trust for the first quarter of the calendar year is associated with actual oil and gas production for the period of November and December 2006 and January 2007 from the properties from which the Trust’s net overriding royalty interests (“Royalties”) were carved. Oil and gas sales attributable to the Royalties and the properties from which the Royalties were carved are as follows:

		First Quarter
		2007				2006
Production:
Oil sales (Bbls)			174,617				205,912
Gas sales (Mcf)			769,291				895,338
Product Sales From Which The Royalties Were Carved:
Oil:
Total oil sales (Bbls)			296,785				302,938
Average per day (Bbls)			3,226				3,293
Average price per Bbl		$	51.98			$	54.79
Gas:
Total gas sales (Mcf)			1,503,430				1,421,963
Average per day (Mcf)			16,342				15,456
Average price per Mcf		$	7.14			$	9.56

The posted price of oil decreased to an average price of $51.98 per Bbl in the first quarter of 2007, compared to $54.79 per Bbl in the first quarter of 2006. The Trustee has been advised by ConocoPhillips that for the period of August 1, 1993, through March 31, 2007, the oil from the Waddell Ranch properties was being sold under a competitive bid to a third party. The average price of gas decreased from $9.56 per Mcf in the first quarter of 2006 to $7.14 per Mcf in the first quarter of 2007 due to change in overall market variables.

Since the oil and gas sales attributable to the Royalties are based on an allocation formula that is dependent on such factors as price and cost (including capital expenditures), the production amounts in the Royalties section of the above table do not provide a meaningful comparison. Oil

sales volumes decreased and gas sales volumes increased from the Underlying Properties (as defined in the Trust’s Annual Report on Form 10-K for the year ended December 31, 2006) for the applicable period in 2007 compared to 2006.

Capital expenditures for drilling, remedial and maintenance activities on the Waddell Ranch properties during the first quarter of 2007 totaled $2.8 million as compared to $0.6 million for the first quarter of 2006. ConocoPhillips has informed the Trustee that the 2007 capital expenditures budget has been revised to $32.4 million for the Waddell Ranch properties. The total amount of capital expenditures for 2006 was $35.6 million. Through the first quarter of 2007, capital expenditures of $2.8 million have been expended.

The Trustee has been advised that there were 12 workover wells completed, 1 new well completed, 7 new wells in progress and 7 workover wells in progress during the three months ended March 31, 2007 as compared to 20 workover wells completed, 2 new wells completed and no new wells or workover wells in progress for the three months ended March 31, 2006 on the Waddell Ranch properties.

Lease operating expense and property taxes totaled $4.1 million for the first quarter of 2007, compared to $3.7 million in the first quarter of 2006 on the Waddell Ranch properties. This increase is primarily attributable to increased electrical costs and increased ad valorem taxes paid for the first quarter in 2007.

Calculation of Royalty Income

The Trust’s royalty income is computed as a percentage of the net profit from the operation of the properties in which the Trust owns net overriding royalty interests. These percentages of net profits are 75% and 95% in the case of the Waddell Ranch properties and the Texas Royalty properties, respectively. Royalty income received by the Trust for the three months ended March 31, 2007 and 2006, respectively, were computed as shown in the table below:

		THREE MONTHS ENDED MARCH 31,
		2007								2006
		WADDELL				TEXAS				WADDELL				TEXAS
		RANCH				ROYALTY				RANCH				ROYALTY
		PROPERTIES				PROPERTIES				PROPERTIES				PROPERTIES
Gross proceeds of sales from the Underlying Properties
Oil proceeds		$	10,831,004			$	4,596,400			$	11,900,526			$	4,697,518
Gas proceeds			9,505,577				1,225,083				11,930,222				1,666,686
Total			20,336,580				5,821,483				23,830,748				6,364,204
Less:
Severance tax:
Oil			464,446				169,919				508,772				187,339
Gas			600,633				78,235				726,302				111,920
Other							159,926
Lease operating expense and property tax:
Oil and gas			4,052,346				589,947				3,695,189				599,993
Capital expenditures			2,794,808				—				598,857				—
Total			7,912,235				998,026				5,529,120				899,252
Net profits			12,424,346				4,823,457				18,301,629				5,464,953
Net overriding royalty interests			75	%			95	%			75	%			95	%
Royalty income		$	9,318,259			$	4,582,284			$	13,726,222			$	5,191,705

Critical Accounting Policies and Estimates

The Trust’s financial statements reflect the selection and application of accounting policies that require the Trust to make significant estimates and assumptions. The following are some of the more critical judgment areas in the application of accounting policies that currently affect the Trust’s financial condition and results of operations.

Basis of Accounting

The financial statements of the Trust are prepared on a modified cash basis and are not intended to present financial positions and results of operations in conformity with accounting principles generally accepted in the United States of America (“GAAP”). Preparation of the Trust’s financial statements on such basis includes the following:

	•		Royalty income and interest income are recorded in the period in which amounts are received by the Trust rather than in the period of production and accrual, respectively.
	•		General and administrative expenses recorded are based on liabilities paid and cash reserves established out of cash received.
	•		Amortization of the royalty interests is calculated on a unit-of-production basis and charged directly to trust corpus when revenues are received.
	•		Distributions to Unit holders are recorded when declared by the Trustee (see Note 1 to the Financial Statements).

The financial statements of the Trust differ from financial statements prepared in accordance with accounting principles generally accepted in the United States of America because royalty income is not accrued in the period of production, general and administrative expenses recorded are based on liabilities paid and cash reserves established rather than on the accrual basis, and amortization of the royalty interests is not charged against operating results. This comprehensive basis of accounting other than GAAP corresponds to the accounting permitted for royalty trusts by the U.S. Securities and Exchange Commission as specified by Staff Accounting Bulletin Topic 12:E, Financial Statements of Royalty Trusts.

New Accounting Pronouncements

In February 2006, the FASB issued SFAS No. 155, Accounting for Certain Hybrid Financial Instruments – an amendment of FASB Statements No. 133 Accounting for Derivative Instruments and No. 140 Accounting for Transfers and Servicing of Financial Assets and Extinguishments of Liabilities. This statement resolves issues addressed in Statement 133 Implementation Issue No. D1, Application of Statement 133 to Beneficial interests in Securitized Financial Assets. This statement is effective for all financial instruments acquired or issued after the beginning of an entity’s first fiscal year that begins after September 15, 2006. The Trust has no financial instruments and accordingly, the adoption of this new Standard did not impact the financial statements of the Trust.

In March 2006, the FASB issued SFAS No. 156, Accounting for Servicing of Financial Assets – an amendment of FASB Statements No. 140 Accounting for Transfers and Servicing of Financial Assets and Extinguishments of Liabilities. This statement requires an entity to recognize a servicing asset or servicing liability each time it undertakes an obligation to service a financial asset by entering into a servicing contract in certain situations. This statement is effective as of the beginning of an entity’s first fiscal year that begins after September 15, 2006. The adoption of this statement did not have an effect on the Trust’s financial statements.

In July 2006, the FASB issued FASB Interpretation No. 48 (“FIN 48”), “Accounting for Uncertainty in Income Taxes,” which clarifies the accounting for uncertainty in income taxes recognized in the financial statements in accordance with SFAS No. 109, “Accounting for Income Taxes.” FIN 48 is effective for fiscal years beginning after December 15, 2006. The adoption of this statement did not have an effect on the Trust’s financial statements.

In September 2006, the FASB issued SFAS No. 157, Fair Value Measurements. This statement defines fair value, establishes a framework for measuring fair value in generally accepted accounting principles (GAAP), and expands disclosures about fair value measurements. This statement is effective for financial statements issued for fiscal years beginning after November 15, 2007. The Trustee does not believe that the adoption of this statement will have a material effect on the Trust’s financial statements.

In February 2007, the FASB issued SFAS No. 159, The Fair Value Option for Financial Assets and Financial Liabilities-Including an amendment of FASB Statement No. 115. This statement permits entities to choose to measure many financial instruments and certain other items at fair value. This statement is effective as of the beginning of an entity’s first fiscal year that begins after November 15, 2007. The Trustee does not believe that the adoption of this statement will have a material effect on the Trust’s financial statements.

Revenue Recognition

Revenues from the royalty interests are recognized in the period in which amounts are received by the Trust. Royalty income received by the Trust in a given calendar year will generally reflect the proceeds, on an entitlement basis, from natural gas produced and sold for the twelve-month period ended October 31st in that calendar year. Royalty income received by the Trust in the first quarter of 2007 generally reflects the proceeds associated with actual oil and gas production for the period of November 2006 through January 2007.

Reserve Disclosure

As of January 1, 2007, independent petroleum engineers estimated the net proved reserves attributable to the royalty interests. In accordance with Statement of Financial Standards No. 69, “Disclosures About Oil and Gas Producing Activities,” estimates of future net revenues from proved reserves have been prepared using year-end contractual gas prices and related costs. Numerous uncertainties are inherent in estimating volumes and the value of proved reserves and in projecting future production rates and the timing of development of non-producing reserves. Such reserve estimates are subject to change as additional information becomes available. The reserves actually recovered and the timing of production may be substantially different from the reserves estimates.

Contingencies

Contingencies related to the Underlying Properties that are unfavorably resolved would generally

be reflected by the Trust as reductions to future royalty income payments to the Trust with corresponding reductions to cash distributions to Unit holders. The Trustee is aware of no such items as of March 31, 2007.

Use of Estimates

The preparation of financial statements in conformity with the basis of accounting described above requires management to make estimates and assumptions that affect the reported amounts of certain assets, liabilities, revenues and expenses as of and for the reporting period. Actual results may differ from such estimates.

Item 3. Qualitative and Quantitative Disclosures About Market Risk

There have been no material changes in the Trust’s market risk, as disclosed in the Trust’s Annual Report on Form 10-K for the fiscal year ended December 31, 2006.

Item 4. Controls and Procedures

As of the end of the period covered by this report, the Trustee carried out an evaluation of the effectiveness of the design and operation of the Trust’s disclosure controls and procedures pursuant to Exchange Act Rules 13a-15 and 15d-15. Based upon that evaluation, the Trustee concluded that the Trust’s disclosure control and procedures are effective in timely alerting the Trustee to material information relating to the Trust required to be included in the Trust’s periodic filings with the Securities and Exchange Commission. In its evaluation of disclosure controls and procedures, the Trustee has relied, to the extent considered reasonable, on information provided by Burlington Resources Oil & Gas Company LP, the owner of the Waddell Ranch properties, and Riverhill Energy Corporation, the owner of the Texas Royalty properties. There has not been any change in the Trust’s internal control over financial reporting during the period covered by this report that has materially affected, or is reasonably likely to materially affect, the Trust’s internal control over financial reporting.

PART II — OTHER INFORMATION

Items 1 through 5.

Not applicable.

Item 6. Exhibits

	4.1		Permian Basin Royalty Trust Indenture dated November 3, 1980, between Southland Royalty Company (now Burlington Resources Oil & Gas Company LP) and The First National Bank of Fort Worth (now Bank of America, N.A.), as Trustee, heretofore filed as Exhibit (4)(a) to the Trust’s Annual Report on Form 10-K to the Securities and Exchange Commission for the fiscal year ended December 31, 1980 is incorporated herein by reference.
	4.2		Net Overriding Royalty Conveyance (Permian Basin Royalty Trust) from Southland Royalty Company (now Burlington Resources Oil & Gas Company LP) to The First National Bank of Fort Worth (now Bank of America, N.A.), as Trustee, dated November 3, 1980 (without Schedules), heretofore filed as Exhibit (4)(b) to the Trust’s Annual Report on Form 10-K to the Securities and Exchange Commission for the fiscal year ended December 31, 1980 is incorporated herein by reference.
	4.3		Net Overriding Royalty Conveyance (Permian Basin Royalty Trust — Waddell Ranch) from Southland Royalty Company (now Burlington Resources Oil & Gas Company LP) to The First National Bank of Fort Worth (now Bank of America, N.A.), as Trustee, dated November 3, 1980 (without Schedules), heretofore filed as Exhibit (4)(c) to the Trust’s Annual Report on Form 10-K to the Securities and Exchange Commission for the fiscal year ended December 31, 1980 is incorporated herein by reference.
	10.1		Registration Rights Agreement dated as of July 21, 2004 by and between Burlington Resources Inc. and Bank of America, N.A., as trustee of Permian Basin Royalty Trust, heretofore filed as Exhibit 10.1 to the Trust’s Quarterly Report on Form 10-Q to the Securities and Exchange Commission for the quarterly period ended June 30, 2004 is incorporated

			herein by reference.
	10.2		Underwriting Agreement dated December 15, 2005 among the Permian Basin Royalty Trust, Burlington Resources, Inc., Burlington Resources Oil & Gas L.P. and Lehman Brothers Inc. and Wachovia Capital Markets, LLC as representatives of the several underwriters, heretofore filed as Exhibit 10.1 to the Trust’s current report on Form 8-K to the Securities and Exchange Commission filed on December 19, 2005, is incorporated herein by reference.
	10.3		Underwriting Agreement dated August 2, 2005 among the Permian Basin Royalty Trust, Burlington Resources, Inc., Burlington Resources Oil & Gas L.P. and Goldman Sachs & Co. and Lehman Brothers Inc. as representatives of the several underwriters, heretofore filed as Exhibit 10.1 to the Trust’s current report on Form 8-K to the Securities and Exchange Commission filed on August 8, 2005, is incorporated herein by reference.
	10.4		Underwriting Agreement dated August 17, 2006, among Permian Basin Royalty Trust, ConocoPhillips, Burlington Resources Oil & Gas Company LP and Lehman Brothers Inc. and Wachovia Capital Markets, LLC as representatives of the several underwriters heretofore filed as Exhibit 10.1 to the Trust’s current report on Form 8-K to the Securities and Exchange Commission filed on August 22, 2006, is incorporated herein by reference.
	31.1		Certification by Ron E. Hooper, Senior Vice President and Trust Administrator of Bank of America, Trustee of Permian Basin Royalty Trust, dated May 9, 2007 and submitted pursuant to Rule 13a-14(a)/15d-14(a) and pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
	32.1		Certificate by Bank of America, Trustee of Permian Basin Royalty Trust, dated May 9, 2007 and submitted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (18 U.S.C. Section 1350).

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this Report to be signed on its behalf by the undersigned thereunto duly authorized.

Date: May 9, 2007

(The Trust has no directors or executive officers.)

INDEX TO EXHIBITS

Exhibit
Number		Exhibit
4.1		Permian Basin Royalty Trust Indenture dated November 3, 1980, between Southland Royalty Company (now Burlington Resources Oil & Gas Company LP) and The First National Bank of Fort Worth (now Bank of America, N.A.), as Trustee, heretofore filed as Exhibit (4)(a) to the Trust’s Annual Report on Form 10-K to the Securities and Exchange Commission for the fiscal year ended December 31, 1980 is incorporated herein by reference.*
4.2		Net Overriding Royalty Conveyance (Permian Basin Royalty Trust) from Southland Royalty Company (now Burlington Resources Oil & Gas Company LP) to The First National Bank of Fort Worth (now Bank of America, N.A.), as Trustee, dated November 3, 1980 (without Schedules), heretofore filed as Exhibit (4)(b) to the Trust’s Annual Report on Form 10-K to the Securities and Exchange Commission for the fiscal year ended December 31, 1980 is incorporated herein by reference.*
4.3		Net Overriding Royalty Conveyance (Permian Basin Royalty Trust – Waddell Ranch) from Southland Royalty Company (now Burlington Resources Oil & Gas Company LP) to The First National Bank of Fort Worth (now Bank of America, N.A.), as Trustee, dated November 3, 1980 (without Schedules), heretofore filed as Exhibit (4)(c) to the Trust’s Annual Report on Form 10-K to the Securities and Exchange Commission for the fiscal year ended December 31, 1980 is incorporated herein by reference.*
10.1		Registration Rights Agreement dated as of July 21, 2004 by and between Burlington Resources Inc. and Bank of America, N.A., as trustee of Permian Basin Royalty Trust, heretofore filed as Exhibit 10.1 to the Trust’s Quarterly Report on Form 10-Q to the Securities and Exchange Commission for the quarterly period ended June 30, 2004 is incorporated herein by reference.*
10.2		Underwriting Agreement dated December 15, 2005 among the Permian Basin Royalty Trust, Burlington Resources, Inc., Burlington Resources Oil & Gas L.P. and Lehman Brothers Inc. and Wachovia Capital Markets, LLC as representatives of the several underwriters, heretofore filed as Exhibit 10.1 to

Exhibit
Number		Exhibit
		the Trust’s current report on Form 8-K to the Securities and Exchange Commission filed on December 19, 2005, is incorporated herein by reference.*
10.3		Underwriting Agreement dated August 2, 2005 among the Permian Basin Royalty Trust, Burlington Resources, Inc., Burlington Resources Oil & Gas L.P. and Goldman Sachs & Co. and Lehman Brothers Inc. as representatives of the several underwriters, heretofore filed as Exhibit 10.1 to the Trust’s current report on Form 8-K to the Securities and Exchange Commission filed on August 8, 2005, is incorporated herein by reference.*
10.4		Underwriting Agreement dated August 17, 2006, among Permian Basin Royalty Trust, ConocoPhillips, Burlington Resources Oil & Gas Company LP and Lehman Brothers Inc. and Wachovia Capital Markets, LLC as representatives of the several underwriters heretofore filed as Exhibit 10.1 to the Trust’s current report on Form 8-K to the Securities and Exchange Commission filed on August 22, 2006, is incorporated herein by reference.*
31.1		Certification by Ron E. Hooper, Senior Vice President and Trust Administrator of Bank of America, Trustee of Permian Basin Royalty Trust, dated May 9, 2007 and submitted pursuant to Rule 13a-14(a)/15d-14(a) and pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
32.1		Certificate by Bank of America, Trustee of Permian Basin Royalty Trust, dated May 9, 2007 and submitted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (18 U.S.C. Section 1350).