OMB APPROVAL OMB Number: 3235-0578 Expires: April 30, 2010 Estimated average burden hours per response..... 10.5 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, 2007 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 8/31/07 (unaudited) Principal Amount Value TAX EXEMPT OBLIGATIONS - 73.5% of Net Assets Alabama - 1.4% 5,000,000 Huntsville-Redstone Village Special Care Facilities Fina$ 4,533,250 1,500,000 Sylacauga Health Care Authority Revenue, 6.0%, 8/1/35 1,495,875 $ 6,029,125 Arizona - 1.0% 1,000,000 Maricopa County Hospital Revenue, 5.0%, 4/1/35 $ 917,470 470,000 + Pima County Industrial Development Authority, 6.375%, 7/1 529,356 530,000 Pima County Industrial Development Authority, 6.375%, 7/1 544,978 989,000 Pima County Industrial Development Authority, 6.75%, 7/1/ 1,021,805 1,000,000 + Pima County Industrial Development Authority, 7.5%, 7/1/3 1,179,450 $ 4,193,059 California - 5.2% 1,000,000 California Health Facilities Authority Revenue, 5.25%, 7$ 1,016,560 9,000,000 Golden State Tobacco Securitization Corp., 5.125%, 6/1/47 7,958,970 4,000,000 + Golden State Tobacco Securitization Corp., 6.75%, 6/1/39 4,593,360 9,655,000 (aGolden State Tobacco Securitization Corp., RIB, 4.213%, 6 9,006,087 $ 22,574,977 Colorado - 0.6% 3,000,000 Colorado Educational & Cultural Facilities Authority Rev$ 2,788,890 Connecticut - 0.3% 1,500,000 Mohegan Tribe Indians Gaming Authority, 5.25%, 1/1/33 (1$ 1,411,890 District of Columbia - 0.9% 4,000,000 District of Columbia Tobacco Settlement Financing Corp.,$ 4,137,480 Florida - 5.0% 1,105,000 Highlands County Health Facilities Authority Revenue, 5.$ 1,102,392 5,000,000 + Highlands County Health Facilities Authority Revenue, 6.0 5,519,750 5,000,000 Lee County Industrial Development Authority Revenue, 5.25 4,601,100 2,000,000 Lee County Industrial Development Authority Revenue, 5.37 1,811,920 585,000 Madison County First Mortgage Revenue, 6.0%, 7/1/25 590,651 2,025,000 Miami Beach Health Facilities Authority, 5.375%, 11/15/28 1,932,437 500,000 Miami Beach Health Facilities Authority, 6.7%, 11/15/19 531,790 1,400,000 Orange County Health Facilities Authority Revenue, 5.5%, 1,316,994 3,970,000 (aTampa-Hillsborough County Expressway Authority Revenue, R 4,423,017 $ 21,830,051 Georgia - 4.3% 2,000,000 Burke County Development Authority Revenue, 4.75%, 5/1/3$ 1,973,080 9,580,000 (aGeorgia Municipal Electric Authority Power Revenue, RIB, 11,408,535 2,500,000 + Milledgeville-Baldwin County Development Authority Revenu 2,768,525 2,500,000 + Milledgeville-Baldwin County Development Authority Revenu 2,787,550 $ 18,937,690 Illinois - 3.9% 3,000,000 Chicago Illinois General Obligation, 5.0%, 1/1/28 $ 3,060,150 4,580,000 Illinois Development Finance Authority Revenue, 5.25%, 10 4,617,510 5,000,000 Illinois Educational Facilities Authority Revenue, 5.0%, 5,058,450 2,000,000 Illinois Finance Authority Revenue, 5.5%, 8/15/43 2,058,920 2,055,000 (aIllinois Finance Authority Revenue, RIB, 6.496%, 8/15/43 2,260,829 $ 17,055,859 Indiana - 3.6% 5,000,000 Indiana Health & Educational Facilites Financing Authori$ 4,764,100 4,135,000 Indiana State Development Finance Authority Revenue, 5.75 4,214,433 4,780,000 Vigo County Hospital Authority Revenue, 5.75%, 9/1/42 (14 4,486,938 2,570,000 Vigo County Hospital Authority Revenue, 5.8%, 9/1/47 (144 2,444,019 $ 15,909,490 Iowa - 0.9% 4,000,000 Iowa Financing Authority Senior Housing Revenue, 5.625%,$ 3,730,520 Kansas - 0.5% 750,000 Manhattan Health Care Facilitues Revenue, 5.125%, 5/15/3$ 643,702 2,000,000 Manhattan Health Care Facilitues Revenue, 5.125%, 5/15/42 1,694,700 $ 2,338,402 Louisiana - 3.0% 5,000,000 Louisiana Public Facilities Authority Revenue, 5.5%, 5/1$ 4,969,950 8,335,000 Tobacco Settlement Financing Corp., 5.875%, 5/15/39 8,304,411 $ 13,274,361 Maryland - 1.7% 3,000,000 Frederick County Educational Facilities Revenue, 5.625%,$ 3,068,010 1,000,000 Maryland State Economic Development Revenue, Series A, 5. 971,800 750,000 Maryland State Economic Development Revenue, Series B, 5. 728,850 1,000,000 Maryland State Economic Development Revenue, 5.0%, 12/1/3 882,260 2,000,000 Maryland State Health & Higher Educational Facilities Aut 1,981,140 $ 7,632,060 Massachusetts - 3.1% 2,000,000 Massachusetts Health & Educational Facilities Authority $ 2,020,020 1,550,000 Massachusetts Health & Educational Facilities Authority R 1,541,025 1,600,000 Massachusetts Health & Educational Facilities Authority R 1,606,192 2,120,000 Massachusetts Health & Educational Facilities Authority R 2,132,911 900,000 Massachusetts Health & Educational Facilities Authority R 936,396 2,750,000 Massachusetts Health & Educational Facilities Authority R 2,881,917 500,000 Massachusetts State Development Finance Agency, 5.5%, 1/1 480,840 1,100,000 Massachusetts State Development Finance Agency, 5.625%, 1 1,136,564 1,000,000 Massachusetts State Development Finance Agency, 5.7%, 10/ 1,027,710 $ 13,763,575 Michigan - 2.8% 5,000,000 Macomb County Hospital Finance Authority Revenue, 5.875%$ 4,838,150 1,595,000 Meridian Economic Development Corporate Ltd. Obligation R 1,459,297 3,340,000 Michigan Public Educational Facilities Authority Revenue, 3,167,890 2,000,000 Michigan State Hospital Finance Authority Revenue, 5.25%, 1,898,680 1,000,000 Michigan State Hospital Finance Authority Revenue, 5.5%, 947,880 $ 12,311,897 Minnesota - 1.3% 2,000,000 Duluth Economic Development Authority Health Care Facili$ 2,010,820 1,500,000 Duluth Economic Development Authority Health Care Facilit 1,502,400 1,000,000 North Oaks Senior Housing Revenue, 6.0%, 10/1/33 1,003,320 1,000,000 North Oaks Senior Housing Revenue, 6.5%, 10/1/47 1,021,790 $ 5,538,330 Missouri - 0.4% 1,720,000 Missouri State Health & Educational Authority Health Fac$ 1,694,183 Montana - 0.2% 1,000,000 Montana Finance Authority Hospital Facilities Revenue, 5$ 1,007,330 Nebraska - 1.2% 4,980,000 (aNebraska Public Power District Revenue, RIB, 4.881%, 1/1$ 5,179,997 Nevada - 0.4% 1,500,000 Henderson Nevada Health Care Facilities Revenue, 5.625%,$ 1,545,720 New Hampshire - 0.6% 1,700,000 + New Hampshire Business Finance Authority Revenue, 6.05%,$ 1,766,079 1,000,000 New Hampshire Health & Education Facilities Authority Rev 1,031,780 $ 2,797,859 New Jersey - 5.4% 1,250,000 Camden County Improvement Authority Revenue, 5.75%, 2/15$ 1,266,388 5,920,000 (aGarden State Preservation Trust, RIB, 7.439%, 11/1/22 (14 8,078,610 710,000 New Jersey Economic Development Authority Revenue, 5.75%, 704,554 1,000,000 New Jersey Economic Development Authority Revenue, 5.875% 977,220 1,000,000 New Jersey Health Care Facilities Financing Authority Rev 953,600 5,000,000 New Jersey Health Care Facilities Financing Authority Rev 4,961,650 3,500,000 New Jersey Health Care Facilities Financing Authority Rev 3,568,635 3,000,000 + Tobacco Settlement Financing Corp., 6.25%, 6/1/43 3,368,010 $ 23,878,667 New Mexico - 0.6% 1,000,000 Dona Ana County PILT Revenue, 5.25%, 12/1/25 $ 995,270 1,500,000 Farmington New Mexico Hospital Revenue, 5.0%, 6/1/23 1,493,415 $ 2,488,685 New York - 3.5% 2,000,000 Dutchess County Industrial Development Agency Revenue, 7$ 2,163,400 1,000,000 New York City Industrial Development Agency, 5.0%, 7/1/27 1,023,750 1,000,000 New York City Industrial Development Agency, 5.25%, 7/1/2 1,047,230 5,000,000 Port Authority of New York & New Jersey Revenue, 5.0%, 9/ 5,069,100 1,000,000 Suffolk County Industrial Development Agency Civic Facili 908,330 4,900,000 Triborough Bridge & Tunnel Authority, 5.25%, 11/15/30 5,085,955 $ 15,297,765 North Carolina - 0.7% 1,000,000 North Carolina Capital Facilities Finance Agency Student$ 961,090 1,000,000 North Carolina Capital Facilities Finance Agency Student 935,300 1,000,000 North Carolina Medical Care Commission Health Care Facili 968,680 $ 2,865,070 Ohio - 1.0% 3,000,000 + Columbus City School District, 5.0%, 12/1/32 $ 3,220,200 1,000,000 Hamilton County Hospital Facilities Revenue, 5.125%, 5/15 1,018,370 $ 4,238,570 Oregon - 0.7% 2,935,000 Oregon State Housing & Community Services Department Mul$ 2,969,692 Pennsylvania - 2.8% 5,000,000 + Pennsylvania State Turnpike Commission Oil Franchise Tax$ 5,330,700 2,315,000 + Sayre Health Care Facilities Authority Revenue, 5.875%, 1 2,527,170 685,000 Sayre Health Care Facilities Authority Revenue, 5.875%, 1 709,598 280,000 Scranton-Lackawanna Health and Welfare Authority Hospital 281,375 700,000 Scranton-Lackawanna Health and Welfare Authority Hospital 708,029 460,000 Scranton-Lackawanna Health and Welfare Authority Hospital 465,272 2,165,000 Swarthmore Borough Authority College Revenue, 5.0%, 9/15/ 2,182,255 $ 12,204,399 Puerto Rico - 1.4% 5,000,000 Puerto Rico Public Buildings Authority Revenue, 5.25%, 7$ 5,097,350 1,000,000 Puerto Rico Public Finance Corp., 5.75%, 8/1/27 1,059,370 $ 6,156,720 Rhode Island - 1.1% 1,640,000 Tobacco Settlement Financing Corp., 6.125%, 6/1/32 $ 1,674,620 3,100,000 Tobacco Settlement Financing Corp., 6.25%, 6/1/42 3,109,703 $ 4,784,323 South Carolina - 4.0% 6,000,000 Berkeley County School District Installment Lease, 5.0%,$ 6,025,080 5,000,000 Florence County Hospital Revenue, 5.25%, 11/1/34 5,116,500 3,500,000 + Lexington County Health Services District, Inc., Hospital 3,812,130 2,500,000 South Carolina Jobs Economic Development Authority Revenu 2,551,875 $ 17,505,585 Tennessee - 0.6% 2,500,000 Knox County Health Educational & Housing Facilities Boar$ 2,589,875 Texas - 4.8% 1,552,000 Houston Housing Financing Corp., 6.25%, 9/20/31 $ 1,627,303 2,885,000 (aHouston Utility System Revenue, RIB, 5.723%, 5/15/24 (144 3,272,484 2,750,000 Lower Colorado River Authority, 5.0%, 5/15/31 2,783,110 1,711,000 Panhandle Regional Housing Finance Corp., 6.6%, 7/20/31 1,827,896 3,000,000 Richardson Hospital Authority, 6.0%, 12/1/34 3,060,660 1,000,000 Seguin Higher Education Facilities Corp. Revenue, 5.0%, 9 951,330 1,500,000 Texas State Student Housing Revenue, 6.5%, 9/1/34 1,572,000 3,000,000 Willacy County Local Government Corp. Revenue, 6.0%, 9/1/ 3,002,400 3,000,000 Willacy County Local Government Corp. Revenue, 6.875%, 9/ 3,003,060 $ 21,100,243 Vermont - 0.3% 1,295,000 Vermont Educational & Health Buildings Financing Agency $ 1,254,091 Virginia - 1.2% 1,500,000 Prince William County Industrial Development Hospital Re$ 1,513,725 3,925,000 Prince William County Industrial Development Hospital Rev 3,957,617 $ 5,471,342 Washington - 2.3% 3,000,000 King County Washington Sewer Revenue, 5.0%, 1/1/35 $ 3,042,210 7,000,000 Tobacco Settlement Authority Revenue, 6.625%, 6/1/32 7,243,600 $ 10,285,810 Wisconsin - 0.8% 3,500,000 Wisconsin State Health & Educational Facilities Authorit$ 3,505,145 TOTAL TAX-EXEMPT OBLIGATIONS (Cost $318,864,432) (b) $322,278,727 Shares COMMON STOCKS - 39.3% of Net Assets Energy - 0.8% Oil & Gas Storage & Transportation - 0.8% 142,876 Spectra Energy Corp. $ 3,321,867 Total Energy $ 3,321,867 Materials - 0.9% Diversified Chemicals - 0.5% 94,000 Olin Corp. $ 2,015,360 Diversified Metals & Mining - 0.4% 56,012 Compass Minerals International, Inc. $ 1,908,329 Total Materials $ 3,923,689 Consumer Services & Supplies - 0.6% Commercial Printing - 0.6% 79,034 R.R. Donnelley & Sons Co. $ 2,830,998 Total Consumer Services & Supplies $ 2,830,998 Consumer Durables & Apparel - 0.2% Home Furnishings - 0.2% 50,000 Bassett Furniture Industries, Inc. $ 577,000 31,486 Kimball International, Inc. 422,857 Total Consumer Durables & Apparel $ 999,857 Media - 1.1% Movies & Entertainment - 1.0% 206,487 Regal Entertainment Group $ 4,654,217 Publishing - 0.1% 9,905 Idearc, Inc. $ 338,058 Total Media $ 4,992,275 Food, Beverage & Tobacco - 6.7% Packaged Foods & Meats - 1.2% 175,000 B&G Foods, Inc. $ 2,238,250 92,828 Kraft Foods, Inc. 2,976,066 $ 5,214,316 Tobacco - 5.5% 134,140 Altria Group, Inc. $ 9,310,657 172,872 Loews Corp. - Carolina Group 13,159,017 29,704 Reynolds American, Inc. 1,964,028 $ 24,433,702 Total Food, Beverage & Tobacco $ 29,648,018 Pharmaceuticals, Biotechnology & Life Sciences - 4.7% Pharmaceuticals - 4.7% 329,758 Bristol-Myers Squibb Co. $ 9,612,446 216,536 Merck & Co., Inc. 10,863,611 Total Pharmaceuticals, Biotechnology & Life Sciences $ 20,476,057 Banks - 6.0% Diversified Banks - 0.3% 28,642 Wachovia Corp. $ 1,402,885 Regional Banks - 1.7% 81,550 KeyCorp $ 2,715,615 90,000 National City Corp. 2,421,900 67,800 Regions Financial Corp. 2,122,140 $ 7,259,655 Thrifts & Mortgage Finance - 4.0% 222,700 TrustCo Bank Corp., NY $ 2,489,786 409,772 Washington Mutual, Inc. 15,046,828 $ 17,536,614 Total Banks $ 26,199,154 Diversified Financials - 0.5% Diversified Financial Services - 0.5% 42,500 Bank of America Corp. $ 2,153,900 Total Diversified Financials $ 2,153,900 Telecommunication Services - 10.1% Integrated Telecommunication Services - 10.1% 204,553 AT&T, Inc. $ 8,155,528 529,946 Citizens Communications Co. 7,689,516 406,745 Verizon Communications, Inc. 17,034,481 790,184 Windstream Corp. 11,283,828 Total Telecommunication Services $ 44,163,353 Utilities - 7.7% Electric Utilities - 1.2% 138,400 Empire District Electric Co. $ 3,173,512 74,383 Great Plains Energy, Inc. 2,108,014 $ 5,281,526 Gas Utilities - 3.3% 81,249 AGL Resources, Inc. $ 3,226,398 395,466 Atmos Energy Corp. 11,116,549 $ 14,342,947 Multi-Utilities - 3.2% 100,000 Consolidated Edison, Inc. $ 4,594,000 285,753 Duke Energy Corp. 5,240,710 134,112 NSTAR 4,394,850 $ 14,229,560 Total Utilities $ 33,854,033 TOTAL COMMON STOCKS (Cost $146,963,402) $172,563,201 NON-CONVERTIBLE PREFERRED STOCKS - 25.4% of Net Assets Energy - 1.1% Oil & Gas Exploration & Production- 1.1% 49,300 Apache Corp., Series B, 5.68% $ 4,961,059 Total Energy $ 4,961,059 Automobiles & Components - 1.0% Automobile Manufacturers - 1.0% 126,542 Ford Motor Co. Capital Trust II, 6.5% $ 4,470,234 Total Automobiles & Components $ 4,470,234 Banks - 6.2% Diversified Banks - 3.3% 105,000 Bank One Capital VI, 7.2% $ 2,595,098 120,000 Barclays Bank Plc, Series 2, 6.625% 2,960,400 120,000 HSBC Holdings Plc, Series A, 6.2%, 2,766,000 200,000 Royal Bank of Scotland Group Plc, Series L, 5.75% 4,382,000 71,000 Wachovia Preferred Funding Corp., Series A, 7.25% 1,828,250 $ 14,531,748 Thrifts & Mortgage Finance - 2.9% 56,980 Countrywide Capital V, 7.0% $ 1,059,975 100,000 Fannie Mae, Series N, 5.5% 4,575,000 57,000 Freddie Mac, 5.81% 2,741,700 39,000 Freddie Mac, Series F, 5.0% 1,677,000 58,000 Freddie Mac, Series K, 5.79% 2,755,000 $ 12,808,675 Total Banks $ 27,340,423 Diversified Financials - 7.3% Diversified Financial Services - 3.3% 49,000 ABN Amro Capital Fund Trust VII, 6.08% $ 1,109,360 120,000 Bank of America Corp., Series D, 6.204% 3,042,000 81,500 Citigroup, Inc., Series M, 5.864% 3,973,125 120,000 Deustche Bank Capital Funding Trust VIII, 6.375% 2,868,000 150,000 JPMorgan Chase Capital Trust XVI, 6.35% 3,555,000 $ 14,547,485 Consumer Finance - 0.9% 18,000 MBNA Capital, Series D, 8.125% $ 451,220 71,300 SLM Holdings Corp., Series A, 6.97% 3,283,365 $ 3,734,585 Investment Banking & Brokerage - 3.1% 57,000 Bear Stearns Companies, Inc., Series F, 5.72% $ 2,650,500 40,000 Bear Stearns Companies, Inc., Series G, 5.49% 1,590,000 100,000 Lehman Brothers Holdings, Inc., 6.5% 2,461,000 19,000 Lehman Brothers Holdings, Inc., Series C, 5.94% 864,500 50,800 Lehman Brothers Holdings, Inc., Series D, 5.67% 2,286,000 65,000 Merrill Lynch Preferred Capital Trust IV, 7.12% 1,604,542 87,000 Merrill Lynch Preferred Capital Trust V, 7.28% 2,153,983 $ 13,610,525 Total Diversified Financials $ 31,892,595 Insurance - 3.8% Life & Health Insurance - 0.6% 159,000 Scottish Re Group, Ltd., 7.25% $ 2,830,200 Property & Casualty Insurance 2.4% 160,000 ACE, Ltd., Series C, 7.8% $ 4,057,600 161,000 Berkley W.R. Capital Trust II, 6.75% 3,737,335 109,000 XL Capital, Ltd., Series B, 7.625% 2,728,270 $ 10,523,205 Reinsurance - 0.8% 158,000 RenaissanceRE Holdings, Ltd., Series D, 6.6% $ 3,491,800 Total Insurance $ 16,845,205 Real Estate - 2.7% Diversification Real Estate Investment Trust - 0.8% 32,440 PS Business Parks, Inc., Series I, 6.875% $ 730,549 13,000 PS Business Parks, Inc., Series L, 7.6% 312,000 119,200 PS Business Parks, Inc., Series P, 6.7% 2,583,064 $ 3,625,613 Industrial Real Estate Investment Trust - 0.2% 40,000 Prologis Trust, Series G, 6.75% $ 945,600 Office Real Estate Investment Trust - 0.3% 15,000 Brandywine Realty Trust, Series C, 7.5% $ 360,600 34,500 Brandywine Realty Trust, Series D, 7.375% 828,000 $ 1,188,600 Retail Real Estate Investment Trust - 0.8% 94,000 Regency Centers Corp., Series C, 7.45% $ 2,257,880 53,500 Regency Centers Corp., Series E, 6.7% 1,197,865 $ 3,455,745 Specialized Real Estate Investment Trust - 0.6% 118,000 Public Storage, Inc., Series L, 6.75% $ 2,722,260 Total Real Estate $ 11,937,818 Utilities - 3.3% Electric Utilities - 2.9% 98,000 Alabama Power Co., 5.3% $ 2,305,940 113,000 Alabama Power Co., 5.83% 2,712,000 78,000 Interstate Power and Light Co., Series B, 8.375% 2,368,860 40,000 Mississippi Power Co., 5.25% 964,000 7,700 PPL Electric Utilities Corp., 4.5% 669,900 73,000 Southern California Edison Co., 4.32% 1,430,800 94,000 Virginia Power Capital Trust II, 7.375% 2,339,158 $ 12,790,658 Gas Utilities - 0.4% 62,000 Southern Union Co., Series C, 7.55% $ 1,585,340 Total Utilities $ 14,375,998 TOTAL NON-CONVERTIBLE PREFERRED STOCKS (Cost $120,096,389) $111,823,332 CONVERTIBLE PREFERRED STOCKS - 2.1% of Net Assets Capital Goods - 0.5% Aerospace & Defense - 0.5% 15,000 Northrop Grumman Corp., 7.0% $ 2,182,500 Total Capital Goods $ 2,182,500 Diversified Financials - 1.3% Diversified Financial Services - 1.3% 161,000 Lazard, Ltd., 6.625% $ 5,610,850 Total Diversified Financials $ 5,610,850 Insurance - 0.3% Property & Casualty Insurance - 0.3% 47,919 XL Capital, Ltd., Class A, 7.0% $ 1,286,625 Total Insurance $ 1,286,625 TOTAL CONVERTIBLE PREFERRED STOCKS (Cost $7,130,041) $ 9,079,975 TAX-EXEMPT MONEY MARKET MUTUAL FUND - 0.0% of Net Assets 37,190 BlackRock Liquidity Funds MuniFund Portfolio $ 37,190 TOTAL TAX-EXEMPT MONEY MARKET MUTUAL FUND (Cost $37,190) $ 37,190 TOTAL INVESTMENTS IN SECURITIES - 140.3% (Cost $593,091,454) (c) $615,782,425 OTHER ASSETS AND LIABILITIES - (0.1%) $ (726,328) PREFERRED SHARES AT REDEMPTION VALUE, INCLUDING DIVIDEND$(176,334,612) NET ASSETS APPLICABLE TO COMMON SHAREOWNERS - 100.0% $438,721,485 Portfolio Abbreviations RIB Residual Interest Bonds (144A) Security is exempt from registration under Rule 144A of the Securities Act of 1933. Such securities may be resold normally to qualified institutional buyers in a transaction exempt from registration. At August 31, 2007, the value of these securities amounted $57,435,705, or 13.1% of total net assets. NR Security not rated by S&P or Moody's. + Prerefunded bonds have been collateralized by U.S. Treasury securities or U.S. Government Agencies, which are held in escrow to pay interest and principal on the tax exempt issue and to retire the bonds in full at the earliest refunding date. (a) The interest rate is subject to change periodically and inversely based upon prevailing market rates. The interest rate shown is the rate at August 31, 2007. (b) The concentration of tax-exempt investments by type of obligation/market sector is as follows: Insured 21.3 General Obligation 0.9 Revenue Bonds: Health Revenue 29.8 Tobacco Revenue 15.3 Development Revenue 11.1 Education Revenue 7.5 Housing Revenue 5.2 Facilities Revenue 3.1 Other Revenue 1.9 School District Revenue 1.9 Transportation Revenue 1.6 Gaming Revenue 0.4 100.0 (c) At August 31, 2007, the net unrealized gain on investments based on cost for federal income tax purposes of $592,898,867 was as follows: Aggregate gross unrealized gain for all investments in which there is an excess of value over tax cost $ 41,431,241 Aggregate gross unrealized loss for all investments in which there is an excess of tax cost over value (18,547,683) Net unrealized gain $ 22,883,558 For financial reporting purposes net unrealized gain on investments was $22,690,971 and cost of investments aggregated $593,091,454. 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 principal executive officer and principal financial officer have concluded that the registrant's disclosure controls and procedures are effective based on their evaluation of these controls and procedures as of a date within 90 days of 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 were no significant changes in the registrant's internal control over financial reporting that occurred during the second fiscal quarter of the period covered by this report that have materially affected, or are 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 30, 2007 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 30, 2007 By (Signature and Title)* /s/ Vincent Nave Vincent Nave, Treasurer Date October 30, 2007 * Print the name and title of each signing officer under his or her signature.