OMB APPROVAL OMB Number: 3235-0578 Expires: February 28, 2006 Estimated average burden hours per response..... 20.0 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM N-Q CERTIFIED SHAREHOLDER REPORT OF REGISTERED MANAGEMENT INVESTMENT COMPANIES Investment Company Act file number 811-21448 Pioneer Tax Advantaged Balanced Trust (Exact name of registrant as specified in charter) 60 State Street, Boston, MA 02109 (Address of principal executive offices) (ZIP code) Dorothy E. Bourassa, Pioneer Investment Management, Inc., 60 State Street, Boston, MA 02109 (Name and address of agent for service) Registrant's telephone number, including area code: (617) 742-7825 Date of fiscal year end: November 30 Date of reporting period: August 31, 2004 Form N-Q is to be used by management investment companies, other than small business investment companies registered on Form N-5 (239.24 and 274.5 of this chapter), to file reports with the Commission, not later than 60 days after close of the first and third fiscal quarters, pursuant to Rule 30b1-5under the Investment Company Act of 1940 (17 CFR 270.30b-5). The Commission may use the information provided on Form N-Q in its regulatory, disclosure review, inspection, and policymaking roles. A registrant is required to disclose the information specified by Form N-Q, and the Commission will make this information public. A registrant is not required to respond to the collection of information contained in Form N-Q unless the Form displays a currently valid Office of Management and Budget ("OMB") control number. Please direct comments concerning the accuracy of the information collection burden estimate and any suggestions for reducing the burden to Secretary, Securities and Exchange Commission, 450 Fifth Street, NW, Washington, DC 20549-0609. The OMB has reviewed this collection of information under the clearance requirements of 44 U.S.C. ss. 3507. ITEM 1. Schedule of Investments. Pioneer Tax Advantaged Balanced Trust SCHEDULE OF INVESTMENTS 8/31/04 (unaudited) Principal S&P/Moody's Amount Ratings Value TAX EXEMPT OBLIGATIONS - 77.5% OF NET ASSETS Alabama - 4.0% $ 10,990,AAA/Aaa Birmingham Waterworks & Sewer Revenue, 5.0%, 1/1/43 $ 11,093,636 5,000,NR/A2 Huntsville Health Care Authority Revenue, 5.75%, 6/1/32 5,187,350 $ 16,280,986 Arizona - 2.8% 10,285,B-/Ca Gila County Industrial Development Authority Revenue, 5.55%, 1/1/27 $ 8,363,762 1,000NR/Baa3 Pima County Industrial Development Authority, 6.375%, 7/1/31 1,003,570 1,000NR/Baa3 Pima County Industrial Development Authority, 6.75%, 7/1/31 1,020,670 1,000NR/NR Pima County Industrial Development Authority, 7.5%, 7/1/34 1,018,900 $ 11,406,902 California - 0.7% 1,000BBB+/Baa1 California Health Facilities Authority Revenue, 5.25%, 7/1/23 $ 978,860 2,000,BBB/Baa3 Golden State Tobacco Securitization Corp., 6.75%, 6/1/39 1,866,220 $ 2,845,080 Connecticut - 1.7% 4,190BBB/A3 Connecticut State Development Authority Pollution Control Revenue, 5.$ 4,397,405 1,000AAA/Aaa Connecticut State Health & Educational Facilities Authority Revenue, 5. 1,053,950 1,500BBB-/NR Mohegan Tribe Indians Gaming Authority, 5.25%, 1/1/33 1,467,855 $ 6,919,210 District of Columbia - 0.9% 4,000,BBB/Baa3 District of Columbia Tobacco Settlement Financing Corp., 6.75%, 5/15/$ 3,697,680 Florida - 6.9% 5,000,A/A2 Highlands County Health Facilities Authority Revenue, 6.0%, 11/15/25 $ 5,350,450 10,980,AA-/Aa3 Jefferson Water & Sewer System Revenue, 5.0%, 10/1/41 11,008,438 1,14BB/NR Miami Beach Health Facilities Authority, 5.375%, 11/15/28 1,003,192 50BB/Ba2 Miami Beach Health Facilities Authority, 6.7%, 11/15/19 516,540 10,000,AAA/Aaa Miami-Dade County Aviation Revenue, 5.0%, 10/1/37 10,138,000 $ 28,016,620 Georgia - 2.9% 9,735,AAA/Aaa Georgia State General Obligation, 2.0%, 12/1/23 $ 6,467,253 2,500,BBB/NR Milledgeville-Baldwin County Development Authority Revenue, 5.5%, 9/1/2 2,577,600 2,500,BBB/NR Milledgeville-Baldwin County Development Authority Revenue, 5.625%, 9/1 2,562,525 $ 11,607,378 Illinois - 5.2% 3,000,AAA/Aaa Chicago Illinois General Obligation, 5.0%, 1/1/28 $ 3,055,830 4,580,A-/Baa1 Illinois Development Finance Authority Revenue, 5.25%, 10/1/24 4,717,171 5,000,AA+/Aa1 Illinois Educational Facilities Authority Revenue, 5.0%, 12/1/38 5,043,850 2,000,AA+/Aa2 Illinois Finance Authority Revenue, 5.5%, 8/15/43 2,047,360 5,095,NR/A1 Illinois Health Facilities Authority Revenue, 5.75%, 7/1/15 5,469,330 1,13CC/Caa1 Illinois Health Facilities Authority Revenue, 6.375%, 1/1/15 739,280 $ 21,072,821 Indiana - 1.3% 5,100AAA/Aaa Indiana Transportation Finance Authority Highway Revenue, 5.0%, 6/1/2$ 5,194,809 Louisiana - 0.9% 4,335,BBB/Baa3 Tobacco Settlement Financing Corp., 5.875%, 5/15/39 $ 3,643,307 Maryland - 0.7% 3,000,A/A3 Maryland State Health & Higher Educational Facilities Authority Reven$ 3,020,310 Massachusetts - 4.0% 1,225NR/Aaa Auburn Massachusetts General Obligation, 5.125%, 6/1/20 $ 1,330,338 1,280NR/Aaa Auburn Massachusetts General Obligation, 5.125%, 6/1/21 1,380,544 1,020AAA/Aaa Littleton Massachusetts General Obligation, 5.0%, 1/15/20 1,094,715 2,000,AA+/Aa1 Massachusetts Health & Educational Facilities Authority Revenue, 5.0%, 2,032,720 1,550BBB-/Baa2 Massachusetts Health & Educational Facilities Authority Revenue, 5.25%, 1,435,812 1,600BBB+/NR Massachusetts Health & Educational Facilities Authority Revenue, 5.45%, 1,617,472 2,120BBB/Baa3 Massachusetts Health & Educational Facilities Authority Revenue, 5.625% 2,141,730 90BBB/Baa3 Massachusetts Health & Educational Facilities Authority Revenue, 6.25%, 941,841 1,10BBB/Baa2 Massachusetts State Development Finance Agency, 5.625%, 10/1/24 1,136,707 1,000BBB/Baa2 Massachusetts State Development Finance Agency, 5.7%, 10/1/34 1,025,700 2,000,AAA/Aaa University of Massachusetts Building Authority Project Revenue, 5.25%, 2,102,840 $ 16,240,419 Michigan - 1.9% 5,000,BBB-/NR Macomb County Hospital Finance Authority Revenue, 5.875%, 11/15/34 $ 4,694,750 2,000,A/A2 Michigan State Hospital Finance Authority Revenue, 5.5%, 11/1/15 2,159,980 1,025BB/Ba1 Pontiac Hospital Finance Authority Revenue, 6.0%, 8/1/07 1,012,044 $ 7,866,774 Pioneer Tax Advantaged Balanced Trust SCHEDULE OF INVESTMENTS 8/31/04 (unaudited) (continued) S&P/ Principal Moody's Amount Ratings Value Minnesota - 1.1% $ 2,000,00A-/NR Duluth Economic Development Authority Health Care Facilities Revenue,$ 2,007,200 2,500,A-/NR Duluth Economic Development Authority Health Care Facilities Revenue, 5 2,481,675 $ 4,488,875 Missouri - 0.4% 1,720AA/ Baa2 Missouri State Health & Educational Authority Health Facilities Reven$ 1,751,338 Montana - 0.3% 1,350NR/A3 Montana Finance Authority Hospital Facilities Revenue, 5.0%, 6/1/24 $ 1,328,265 Nevada - 3.2% 3,000,B-/NR Clark County Industrial Development Revenue, 5.5%, 10/1/30 $ 2,618,520 1,500BBB+/Baa1 Henderson Nevada Health Care Facilities Revenue, 5.625%, 7/1/24 1,513,965 9,000,BB/Ba2 Washoe County Water Facility Revenue, 5.0%, 3/1/36 9,026,280 $ 13,158,765 New Hampshire - 0.7% 2,000,NR/NR New Hampshire Business Finance Authority Revenue, 6.05%, 9/1/29 $ 1,861,360 1,000A+/A2 New Hampshire Health & Education Facilities Authority Revenue, 5.75%, 1 1,043,980 $ 2,905,340 New Jersey - 3.4% 1,250BBB/Baa3 Camden County Improvement Authority Revenue, 5.75%, 2/15/34 $ 1,256,538 1,500BB/Ba2 New Jersey Health Care Facilities Financing Authority Revenue, 5.125%, 1,355,265 5,000,BBB/Baa1 New Jersey Health Care Facilities Financing Authority Revenue, 5.375%, 5,015,300 3,500,NR/NR New Jersey Health Care Facilities Financing Authority Revenue, 7.25%, 7 3,660,125 3,000,BBB/Baa3 Tobacco Settlement Financing Corp., 6.25%, 6/1/43 2,566,920 $ 13,854,148 New Mexico - 0.6% 1,000AA/NR Dona Ana County PILT Revenue, 5.25%, 12/1/25 $ 1,028,670 1,500NR/A3 Farmington New Mexico Hospital Revenue, 5.0%, 6/1/23 1,476,570 $ 2,505,240 New York - 5.2% 2,000,NR/NR Dutchess County Industrial Development Agency Revenue, 7.5%, 3/1/29 $ 1,973,760 1,000NR/Aa2 New York City Industrial Development Agency, 5.0%, 7/1/27 1,020,970 1,000NR/Aa2 New York City Industrial Development Agency, 5.25%, 7/1/24 1,068,020 8,82(aAA+/Aa2 New York City Transitional Finance Authority Revenue, 0.0%, 11/1/29 6,748,711 5,000,AA-/A1 Port Authority of New York & New Jersey Revenue, 5.0%, 9/1/38 5,054,850 4,900,AAA/Aaa Triborough Bridge & Tunnel Authority, 5.25%, 11/15/30 5,128,977 $ 20,995,288 North Carolina - 2.0% 5,000,AA+/Aa1 North Carolina Capital Facilities Finance Agency Revenue, 5.125%, 7/1$ 5,078,450 1,000AA/NR North Carolina Capital Facilities Finance Agency Student Revenue, 5.0%, 1,003,980 1,000AA/NR North Carolina Capital Facilities Finance Agency Student Revenue, 5.0%, 996,350 1,000NR/NR North Carolina Medical Care Commission Health Care Facilities Revenue, 991,410 $ 8,070,190 Ohio - 1.4% 2,000,B-/Caa2 Cleveland Airport Special Revenue, 5.7%, 12/1/19 $ 1,405,280 3,000,AAA/Aaa Columbus City School District, 5.0%, 12/1/32 3,060,330 1,000AAA/Aaa Hamilton County Hospital Facilities Revenue, 5.125%, 5/15/28 1,028,190 $ 5,493,800 Oregon - 0.7% 2,935,NR/Aa2 Oregon State Housing & Community Services Department Multi-Family Rev$ 3,031,444 Pennsylvania - 2.6% 5,000,AAA/Aaa Pennsylvania State Turnpike Commission Oil Franchise Tax Revenue, 5.0$ 5,099,850 3,000,A-/NR Sayre Health Care Facilities Authority Revenue, 5.875%, 12/1/31 3,099,630 2,165AA+/Aa1 Swarthmore Borough Authority College Revenue, 5.0%, 9/15/31 2,190,569 $ 10,390,049 Puerto Rico - 4.7% 8,000,A/Baa1 Puerto Rico Commonwealth Highway & Transportation Authority Revenue, $ 8,088,800 5,000,A-/Baa1 Puerto Rico Public Buildings Authority Revenue, 5.25%, 7/1/33 5,166,450 5,000,BBB+/Baa2 Puerto Rico Public Finance Corp., 5.75%, 8/1/27 5,636,550 $ 18,891,800 Rhode Island - 1.0% 1,545BBB/Baa3 Tobacco Settlement Financing Corp., 6.125%, 6/1/32 $ 1,354,841 3,100BBB/Baa3 Tobacco Settlement Financing Corp., 6.25%, 6/1/42 2,666,031 $ 4,020,872 South Carolina - 5.5% 6,000,A-/A3 Berkeley County School District Installment Lease, 5.0%, 12/1/28 $ 5,993,700 5,000,AAA/Aaa Florence County Hospital Revenue, 5.25%, 11/1/34 5,183,900 3,500,A/A2 Lexington County Health Services District, Inc., Hospital Revenue, 5.5% 3,565,310 2,500,A-/A3 South Carolina Jobs Economic Development Authority Revenue, 5.5%, 11/15 2,526,075 5,000,A-/A3 South Carolina Jobs Economic Development Authority Revenue, 5.625%, 11/ 5,053,850 $ 22,322,835 Pioneer Tax Advantaged Balanced Trust SCHEDULE OF INVESTMENTS 8/31/04 (unaudited) (continued) S&P/ Principal Moody's Amount Ratings Value Tennessee - 0.6% $ 2,500,00NR/Baa3 Knox County Health Educational & Housing Facilities Board Hospital Re$ 2,387,400 Texas - 2.1% 2,750,AAA/Aaa Lower Colorado River Authority, 5.0%, 5/15/31 $ 2,779,590 3,000,BBB/Baa2 Richardson Hospital Authority, 6.0%, 12/1/34 3,071,910 1,000BBB-/NR Seguin Higher Education Facilities Corporation Revenue, 5.0%, 9/1/23 974,860 1,500NR/Baa3 Texas State Student Housing Revenue, 6.5%, 9/1/34 1,584,540 $ 8,410,900 Vermont - 0.3% 1,295AA/Aa3 Vermont Educational & Health Buildings Financing Agency Revenue, 5.0%$ 1,325,225 Virginia - 1.4% 1,500NR/A3 Prince William County Industrial Development Hospital Revenue, 5.2%, $ 1,515,300 3,925,NR/A3 Prince William County Industrial Development Hospital Revenue, 5.35%, 1 3,991,489 $ 5,506,789 Washington - 5.5% 8,000,AAA/Aaa King County Washington Sewer Revenue, 5.0%, 1/1/35 $ 8,096,320 3,000,AAA/Aaa Spokane County General Obligation, 5.0%, 12/1/33 3,037,950 7,000,BBB/Baa3 Tobacco Settlement Authority Revenue, 6.625%, 6/1/32 6,401,640 9,805,AAA/Aaa Washington State General Obligation, 0.0%, 12/1/19 4,753,758 $ 22,289,668 Wisconsin - 0.9% 3,500,BBB+/NR Wisconsin State Health & Educational Facilities Authority Revenue, 5.$ 3,454,010 TOTAL TAX-EXEMPT OBLIGATIONS (Cost $309,286,571) (b) $ 314,394,537 Shares COMMON STOCKS - 35.7% OF NET ASSETS Energy - 1.2% Oil & Gas - 1.2% 25,000 ChevronTexaco Corp. $ 2,437,500 45,000 Kerr-McGee Corp. 2,375,100 Total Energy $ 4,812,600 Materials - 2.4% Chemicals - 2.0% 83,000 Eastman Chemical Co. $ 3,861,990 192,045 Lyondell Chemical Co. 3,781,366 10,200 PPG Industries, Inc. 609,654 $ 8,253,010 Construction Materials - 0.0% 3,950 Monarch Cement Co. $ 85,912 Metals & Mining - 0.4% 39,800 Freeport-McMoRan Copper & Gold, Inc. $ 1,497,674 200 Worthington Industries, Inc. 4,070 $ 1,501,744 Total Materials $ 9,840,666 Industrials - 0.6% Commercial Services & Supplies - 0.6% 39,600 R.R. Donnelley & Sons Co. $ 1,216,908 100,000 ServiceMaster Co. 1,243,000 Total Industrials $ 2,459,908 Capital Goods - 2.0% Automobiles - 0.8% 80,000 General Motors Corp. $ 3,304,800 Household Durables - 1.2% 50,000 Bassett Furniture Industries, Inc. $ 940,000 48,386 Kimball International, Inc. 658,050 33,700 Knape & Vogt Manufacturing Co. 434,056 166,444 Tupperware Corp. 2,841,199 $ 4,873,305 Total Capital Goods $ 8,178,105 Pioneer Tax Advantaged Balanced Trust SCHEDULE OF INVESTMENTS 8/31/04 (unaudited) (continued) Shares Value Food, Beverage & Tobacco - 3.6% Food & Staples Retailing - 0.3% 70,000 Lance, Inc. $ 1,067,500 Food Retail - 0.5% 78,100 ConAgra Foods, Inc. $ 2,046,220 Tobacco - 2.8% 76,000 Altria Group, Inc. $ 3,720,200 115,000 Loews Corp. - Carolina Group 2,838,200 33,000 Reynolds American, .Inc. 2,491,500 56,000 UST, Inc. 2,246,720 $ 11,296,620 Total Food, Beverage & Tobacco $ 14,410,340 Health Care - 2.8% Pharmaceuticals - 2.8% 281,215 Bristol-Myers Squibb Co. $ 6,673,232 108,268 Merck & Co., Inc. 4,868,812 Total Health Care $ 11,542,044 Financials - 6.4% Commercial Banks - 5.9% 182,800 Bank of America Corp. $ 8,222,344 78,200 FirstMerit Corp. 2,059,788 163,100 KeyCorp 5,113,185 90,000 National City Corp. 3,401,100 67,800 Regions Financial Corp. 2,189,262 222,700 TrustCo Bank Corp., NY 2,895,100 $ 23,880,779 Thrifts & Mortgage Finance - 0.5% 50,000 Washington Mutual, Inc. $ 1,941,500 Total Financials $ 25,822,279 Telecommunication Services - 2.6% Diversified Telecommunication Services - 2.6% 257,900 AT&T Corp. $ 3,811,762 260,000 SBC Communications, Inc. 6,705,400 Total Telecommunication Services $ 10,517,162 Utilities - 14.1% Electric Utilities - 11.4% 137,135 Ameren Corp. $ 6,416,547 220,000 Cinergy Corp. 8,905,600 200,000 Consolidated Edison, Inc. 8,440,000 214,097 DTE Energy Co. 8,846,488 138,400 Empire District Electric Co. 2,824,744 74,383 Great Plains Energy, Inc. 2,243,391 67,056 NSTAR 3,272,333 179,000 Southern Co. 5,432,650 $ 46,381,753 Gas Utilities - 1.1% 112,249 KeySpan Corp. $ 4,276,687 Multi-Utilities - 1.6% 303,253 Duke Energy Corp. $ 6,714,021 Total Utilities $ 57,372,461 TOTAL COMMON STOCKS (Cost $144,473,656) $ 144,955,565 Pioneer Tax Advantaged Balanced Trust SCHEDULE OF INVESTMENTS 8/31/04 (unaudited) (continued) Shares Value NON-CONVERTIBLE PREFERRED STOCKS - 22.6% OF NET ASSETS Energy - 1.2% Oil & Gas - 1.2% 49,300 Apache Corp., Series B, 5.68% $ 4,993,168 Total Energy $ 4,993,168 Financials - 18.4% Commercial Banks - 2.8% 94,000 Bank of America Corp., Series VI, 6.75% $ 5,029,000 200,000 Royal Bank of Scotland Group Plc, Series B, 5.75% 4,766,000 55,000 Wachovia Preferred Funding Corp., Series A, 7.25% 1,522,400 $ 11,317,400 Thrifts & Mortgage Finance - 6.5% 201,000 Fannie Mae, Series L, 5.125% $ 9,055,050 114,000 Fannie Mae, Series M, 4.75% 4,816,500 100,000 Fannie Mae, Series N, 5.5% 4,835,000 57,000 Freddie Mac, 5.81% 2,935,500 39,000 Freddie Mac, Series F, 5.0% 1,696,500 58,000 Freddie Mac, Series K, 5.79% 2,943,500 $ 26,282,050 Diversified Financial Services - 1.7% 55,000 Citigroup Inc., Series G, 6.213% $ 2,900,700 81,500 Citigroup Inc., Series M, 5.864% 4,123,900 $ 7,024,600 Consumer Finance - 0.7% 50,000 SLM Holding Corp., Series A, 6.97% $ 2,807,500 Capital Markets - 2.4% 57,000 Bear Stearns Companies, Inc., Series F, 5.72% $ 2,861,400 40,000 Bear Stearns Companies, Inc., Series G, 5.49% 1,880,000 100,000 Lehman Brothers Holdings, Inc., 6.5% 2,603,000 19,000 Lehman Brothers Holdings, Inc., Series C, 5.94% 935,750 30,000 Lehman Brothers Holdings, Inc., Series D, 5.67% 1,476,000 $ 9,756,150 Insurance - 1.9% 110,000 ACE Ltd., Series C, 7.8% $ 2,956,800 70,000 RenaissanceRe Holdings, Ltd., Series C, 6.08% 1,648,500 109,000 XL Capital, Ltd., Series B, 7.625% 2,970,250 $ 7,575,550 Real Estate - 2.4% 27,000 Equity Office Properties Trust, Series G, 7.75% $ 723,060 92,000 Home Properties New York, Inc., Series F, 9.0% 2,603,600 40,000 Prologis Trust, Series G, 6.75% 992,000 60,000 PS Business Parks, Inc., Series H, 7.0% 1,464,000 22,000 PS Business Parks, Inc., Series I, 6.875% 522,060 35,480 Public Storage, Inc., Series T, 7.625% 938,446 94,000 Regency Centers Corp., Series C, 7.45% 2,406,400 $ 9,649,566 Total Financials $ 74,412,816 Utilities - 3.0% Electric Utilities - 2.6% 98,000 Alabama Power Co., 5.3% $ 2,376,500 113,000 Alabama Power Co., 5.83% 2,813,700 78,000 Interstate Power and Light Co., Series B, 8.375% 2,457,000 40,000 Mississippi Power Co., 5.25% 962,500 7,700 PPL Electric Utilities Corp., 4.5% 589,050 72,000 Southern California Edison Co., 4.32% 1,306,800 $ 10,505,550 Gas Utilities - 0.4% 62,000 Southern Union Co., Series C, 7.55% $ 1,695,080 Total Utilities $ 12,200,630 TOTAL NON-CONVERTIBLE PREFERRED STOCKS (Cost $93,972,462) $ 91,606,614 Pioneer Tax Advantaged Balanced Trust SCHEDULE OF INVESTMENTS 8/31/04 (unaudited) (continued) Shares Value CONVERTIBLE PREFERRED STOCKS - 6.0% OF NET ASSETS Financials - 2.7% Commercial Banks - 1.0% 30,000 Bank One Capital V, 8.0% $ 803,525 105,000 Bank One Capital VI, 7.2% 2,758,911 27,000 Fleet Capital Trust VII, 7.2% 708,720 $ 4,271,156 Thrifts & Mortgage Finance - 0.1% 12,000 Countrywide Capital IV, 6.75% $ 302,423 Consumer Finance - 0.1% 18,000 MBNA Capital, Series D, 8.125% $ 483,321 Capital Markets - 1.0% 65,000 Merrill Lynch Preferred Capital Trust IV, 7.12% $ 1,719,312 87,000 Merrill Lynch Preferred Capital Trust V, 7.28% 2,311,029 $ 4,030,341 Insurance - 0.5% 70,000 St. Paul Capital Trust I, 7.6% $ 1,827,123 Total Financials $ 10,914,364 Industrials - 0.5% Aerospace & Defense - 0.5% 15,000 Northrop Grumman Corp., 7.0% $ 1,933,500 Total Industrials $ 1,933,500 Telecommunication Services - 1.5% Diversified Telecommunication Services - 1.5% 60,000 Alltel Corp., 7.75% $ 3,081,000 126,000 CenturyTel, Inc., 6.875% 3,221,820 Total Telecommunication Services $ 6,302,820 Utilities - 1.3% Electric Utilities - 1.3% 31,000 DTE Energy Co., 8.75% $ 778,100 80,000 Energy East Capital Trust I, 8.25% 2,108,297 94,000 Virginia Power Capital Trust II, 7.375% 2,493,770 Total Utilities $ 5,380,167 TOTAL CONVERTIBLE PREFERRED STOCKS (Cost $24,020,412) $ 24,530,851 TAX-EXEMPT MONEY MARKET MUTUAL FUND - 0.2% OF NET ASSETS 733,064 BlackRock Provident Institutional Municipal Fund $ 733,064 TOTAL TAX-EXEMPT MONEY MARKET MUTUAL FUND (Cost $733,064) $ 733,064 TOTAL INVESTMENTS IN SECURITIES - 142.0% (Cost $572,486,165) (c) $ 576,220,631 OTHER ASSETS AND LIABILITIES 1.4% $ 5,835,693 PREFERRED SHARES AT REDEMPTION VALUE INCLUDING DIVIDENDS PAYABLE - (43.5)% $ (176,329,971) NET ASSETS APPLICABLE TO COMMON SHAREOWNERS - 100.0% $ 405,726,353 NR Security not rated by S&P or Moody's. (a) Indicates a security that has a zero coupon that remains in effect until a predetermined date at which time the stat coupon rate becomes effective until final maturity. (b) The concentration of tax-exempt investments by type of obligation/market sector is as follows: Insured 25.7% General Obligation 2.1 Revenue Bonds: Health Revenue 28.5 Development Revenue 8.6 Tobacco Revenue 7.1 Education Revenue 6.3 Other 4.3 Transportation Revenue 4.2 Utilities Revenue 3.5 Water Revenue 2.9 School District Revenue 1.9 Facilities Revenue 1.6 Pollution Revenue 1.4 Housing Revenue 1.0 Gaming Revenue 0.5 Airport Revenue 0.4 100.0% Pioneer Tax Advantaged Balanced Trust SCHEDULE OF INVESTMENTS 8/31/04 (unaudited) (continued) (c) At August 31, 2004, the net unrealized loss on investments based on cost for federal income tax purposes of $572,460,924 was as follows: Aggregate gross unrealized gain for all investments in which there is an excess of$ 13,647,455 Aggregate gross unrealized loss for all investments in which there is an excess of t (9,887,748) Net unrealized loss $ 3,759,707 For financial reporting purposes net unrealized gain on investments was $3,734,466 and cost of investments aggregated $572,486,165. ITEM 2. CONTROLS AND PROCEDURES. (a) Disclose the conclusions of the registrant's principal executive officer or officers and principal financial officer or officers, or persons performing similar functions, about the effectiveness of the registrant's disclosure controls and procedures (as defined in Rule 30a-3(c) under the Act (17 CFR 270.30a-3(c))) as of a date within 90 days of the filing date of the report that includes the disclosure required by this paragraph, based on their evaluation of these controls and procedures required by Rule 30a-3(b) under the Act (17 CFR270.30a-3(b))) and Rule 13a-15(b) or 15d-15(b) under the Exchange Act (17 CFR240.13a-15(b) or 240.15d-15(b)). The registrant's certifying officers have determined that the registrant's disclosure controls and procedures are effective based on an evaluation of these controls and procedures as of a date within 90 days prior to the filing date of this report. (b) Disclose any change in the registrant's internal controls over financial reporting (as defined in Rule 30a-3(d) under the Act (17 CFR270.30a-3(d)) that occurred during the registrant's last fiscal quarter that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting. There was no significant change in the registrant's internal controls over financial reporting that occurred during the registrant's last fiscal quarter that have materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting. ITEM 3. EXHIBITS. (a) A separate certification for each principal executive officer and principal financial officer of the registrant as required by Rule 30a-2 under the Act (17 CFR 270.30a-2). Filed herewith. SIGNATURES [See General Instruction F] Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized. (Registrant) Pioneer Tax Advantaged Balanced Trust By (Signature and Title)* /s/ John F. Cogan, Jr. John F. Cogan, Jr, President Date October 29, 2004 Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated. By (Signature and Title)* /s/ John F. Cogan, Jr. John F. Cogan, Jr., President Date October 29, 2004 By (Signature and Title)* /s/ Vincent Nave Vincent Nave, Treasurer Date October 29, 2004 * Print the name and title of each signing officer under his or her signature.