UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D (Rule 13d-101) Under the Securities Exchange Act of 1934 (Amendment No. )* Pioneer Tax Advantaged Balanced Trust ----------------------------------------------------------------- ------- (Name of Issuer) Common Stock, no par value ----------------------------------------------------------------- ------- (Title of Class of Securities) 72388R101 ----------------------------------------------------------------- ------- (CUSIP Number) Arthur D. Lipson Western Investment LLC 7050 S. Union Park Center, Ste. 590 Midvale, UT 84047 ----------------------------------------------------------------- ------- (Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications) January 17, 2007 ----------------------------------------------------------------- ------- (Date of Event which Requires Filing of this Statement) If the filing person has previously filed a statement on Schedule 13G to report the acquisition which is the subject of this Schedule 13D, and is filing this schedule because of Rule 13d- 1(e), (f) or (g), check the following box [ ]. Note. Schedules filed in paper format shall include a signed original and five copies of the schedule, including all exhibits. See Rule 13d-7 for other parties to whom copies are to be sent. (Continued on following pages) CUSIP No. - 72388R101 1 NAMES OF REPORTING PERSONS. I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY). WESTERN INVESTMENT LLC 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [ ] (b) [ ] 3 SEC USE ONLY 4 SOURCE OF FUNDS* (See Item 3) OO, WC 5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) [ ] OR 2(e) [ ] 6 CITIZENSHIP OR PLACE OF ORGANIZATION DELAWARE NUMBER OF 7 SOLE VOTING POWER (See Item 5) SHARES 1,632,641 shares BENEFICIALLY 8 SHARED VOTING POWER (See Item 5) OWNED BY 0 shares EACH 9 SOLE DISPOSITIVE POWER REPORTING 1,632,641 shares PERSON 10 SHARED DISPOSITIVE POWER WITH 0 shares 11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON (See Item 5) 1,632,641 shares 12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES* [ ] 13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 5.7% 14 TYPE OF REPORTING PERSON* OO 1 NAME OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) ARTHUR D. LIPSON 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [ ] (b) [ ] 3 SEC USE ONLY 4 SOURCE OF FUNDS* OO 5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) [ ] OR 2(e) [ ] 6 CITIZENSHIP OR PLACE OF ORGANIZATION USA NUMBER OF 7 SOLE VOTING POWER SHARES 1,632,641 BENEFICIALLY 8 SHARED VOTING POWER OWNED BY 0 EACH 9 SOLE DISPOSITIVE POWER REPORTING 1,632,641 PERSON WITH 10 SHARED DISPOSITIVE POWER 0 11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON (See Item 5) 1,632,641 12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES* [ ] 13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 5.7% 14 TYPE OF REPORTING PERSON* IN 1 NAME OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) WESTERN INVESTMENT HEDGED PARTNERS LP 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [ ] (b) [ ] 3 SEC USE ONLY 4 SOURCE OF FUNDS* WC 5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) [ ] OR 2(e) [ ] 6 CITIZENSHIP OR PLACE OF ORGANIZATION DELAWARE NUMBER OF 7 SOLE VOTING POWER SHARES 793,939 BENEFICIALLY 8 SHARED VOTING POWER OWNED BY 0 EACH 9 SOLE DISPOSITIVE POWER REPORTING 793,939 PERSON WITH 10 SHARED DISPOSITIVE POWER 0 11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON (See Item 5) 793,939 12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES* [ ] 13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 2.8% 14 TYPE OF REPORTING PERSON* PN 1 NAME OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) WESTERN INVESTMENT ACTIVISM PARTNERS LLC 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [ ] (b) [ ] 3 SEC USE ONLY 4 SOURCE OF FUNDS* WC 5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) [ ] OR 2(e) [ ] 6 CITIZENSHIP OR PLACE OF ORGANIZATION DELAWARE NUMBER OF 7 SOLE VOTING POWER SHARES 837,702 BENEFICIALLY 8 SHARED VOTING POWER OWNED BY 0 EACH 9 SOLE DISPOSITIVE POWER REPORTING 837,702 PERSON WITH 10 SHARED DISPOSITIVE POWER 0 11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON (See Item 5) 837,702 12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES* [ ] 13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 2.9% 14 TYPE OF REPORTING PERSON* OO 1 NAME OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) BENCHMARK PLUS INSTITUTIONAL PARTNERS, L.L.C. 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [ ] (b) [ ] 3 SEC USE ONLY 4 SOURCE OF FUNDS* WC 5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) [ ] OR 2(e) [ ] 6 CITIZENSHIP OR PLACE OF ORGANIZATION DELAWARE NUMBER OF 7 SOLE VOTING POWER SHARES 430,800 BENEFICIALLY 8 SHARED VOTING POWER OWNED BY 0 EACH 9 SOLE DISPOSITIVE POWER REPORTING 430,800 PERSON WITH 10 SHARED DISPOSITIVE POWER 0 11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON (See Item 5) 430,800 12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES* [ ] 13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 1.5% 14 TYPE OF REPORTING PERSON* OO 1 NAME OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) BENCHMARK PLUS PARTNERS, L.L.C. 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [ ] (b) [ ] 3 SEC USE ONLY 4 SOURCE OF FUNDS* WC 5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) [ ] OR 2(e) [ ] 6 CITIZENSHIP OR PLACE OF ORGANIZATION DELAWARE NUMBER OF 7 SOLE VOTING POWER SHARES 440,000 BENEFICIALLY 8 SHARED VOTING POWER OWNED BY 0 EACH 9 SOLE DISPOSITIVE POWER REPORTING 440,000 PERSON WITH 10 SHARED DISPOSITIVE POWER 0 11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON (See Item 5) 440,000 12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES* [ ] 13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 1.5% 14 TYPE OF REPORTING PERSON* OO 1 NAME OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) BENCHMARK PLUS MANAGEMENT, L.L.C. 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [ ] (b) [ ] 3 SEC USE ONLY 4 SOURCE OF FUNDS* OO 5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) [ ] OR 2(e) [ ] 6 CITIZENSHIP OR PLACE OF ORGANIZATION DELAWARE NUMBER OF 7 SOLE VOTING POWER SHARES 870,800 BENEFICIALLY 8 SHARED VOTING POWER OWNED BY 0 EACH 9 SOLE DISPOSITIVE POWER REPORTING 870,800 PERSON WITH 10 SHARED DISPOSITIVE POWER 0 11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON (See Item 5) 870,800 12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES* [ ] 13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 3.0% 14 TYPE OF REPORTING PERSON* OO 1 NAME OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) ROBERT FERGUSON 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [ ] (b) [ ] 3 SEC USE ONLY 4 SOURCE OF FUNDS* OO 5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) [ ] OR 2(e) [ ] 6 CITIZENSHIP OR PLACE OF ORGANIZATION USA NUMBER OF 7 SOLE VOTING POWER SHARES 870,800 BENEFICIALLY 8 SHARED VOTING POWER OWNED BY 0 EACH 9 SOLE DISPOSITIVE POWER REPORTING 870,800 PERSON WITH 10 SHARED DISPOSITIVE POWER 0 11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON (See Item 5) 870,800 12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES* [ ] 13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 3.0% 14 TYPE OF REPORTING PERSON* IN 1 NAME OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) SCOTT FRANZBLAU 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [ ] (b) [ ] 3 SEC USE ONLY 4 SOURCE OF FUNDS* OO 5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) [ ] OR 2(e) [ ] 6 CITIZENSHIP OR PLACE OF ORGANIZATION USA NUMBER OF 7 SOLE VOTING POWER SHARES 870,800 BENEFICIALLY 8 SHARED VOTING POWER OWNED BY 0 EACH 9 SOLE DISPOSITIVE POWER REPORTING 870,800 PERSON WITH 10 SHARED DISPOSITIVE POWER 0 11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON (See Item 5) 870,800 12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES* [ ] 13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 3.0% 14 TYPE OF REPORTING PERSON* IN ITEM 1. SECURITY AND ISSUER This statement relates to shares of the Common Stock, no par value (the "Shares"), of Pioneer Tax Advantaged Balanced Trust (the "Issuer"). The address of the principal executive offices of the Issuer is 60 State Street, Boston, MA 02109. ITEM 2. IDENTITY AND BACKGROUND (a) This statement is filed by Western Investment LLC, a Delaware limited liability company ("WILLC"), Arthur D. Lipson, Western Investment Hedged Partners LP, a Delaware limited partnership ("WIHP"), Western Investment Activism Partners LLC, a Delaware limited liability company ("WIAP"), Benchmark Plus Institutional Partners, L.L.C., a Delaware limited liability company ("BPIP"), Benchmark Plus Partners, L.L.C, a Delaware limited liability company ("BPP"), Benchmark Plus Management, L.L.C., a Delaware limited liability company ("BPM"), Scott Franzblau and Robert Ferguson. Each of the foregoing is referred to as a "Reporting Person" and collectively as the "Reporting Persons." WILLC provides recommendations from time to time to BPIP and BPP with respect to purchases and sales of Shares of the Issuer, pursuant to an oral agreement between WILLC and BPIP and between WILLC and BPP. Accordingly, the Reporting Persons may be deemed a group for Section 13(d) purposes. Each of WILLC, Mr. Lipson, WIHP and WIAP disclaims beneficial ownership of the Shares beneficially owned by BPIP, BPP, BPM, Mr. Franzblau and Mr. Ferguson and the existence of a group for Section 13(d) purposes. Each of BPIP, BPP, BPM, Mr. Franzblau and Mr. Ferguson disclaims beneficial ownership of the Shares beneficially owned by the other Reporting Persons and the existence of a group for Section 13(d) purposes. Each of the Reporting Persons is party to that certain Joint Filing Agreement as further described in Item 6. Accordingly, the Reporting Persons are hereby filing a joint Schedule 13D. WILLC has sole voting and investment power over WIHP's and WIAP's security holdings and Mr. Lipson, in his role as the managing member of WILLC, controls WILLC's voting and investment decisions. BPM is the managing member of BPIP and BPP and Messrs. Franzblau and Ferguson, in their role as managing members of BPM, have sole voting and investment control over BPIP's and BPP's security holdings. Neither WILLC, Mr. Lipson, WIHP nor WIAP has voting or dispositive control over the Shares beneficially owned by BPIP, BPP, BPM, Mr. Franzblau or Mr. Ferguson. Neither BPIP, BPP, BPM, Mr. Franzblau, nor Mr. Ferguson has voting or dispositive control over the Shares beneficially owned by the other Reporting Persons. (b) The principal business address of WILLC, Mr. Lipson, WIHP and WIAP is 7050 S. Union Park Center, Suite 590, Midvale, UT 84047. The principal business address of BPIP, BPP, BPM, Mr. Franzblau, and Mr. Ferguson is 820 A Street, Suite 700, Tacoma, WA 98402. (c) The principal business of WILLC is acting as the general partner and managing member of WIHP and WIAP, respectively. The principal occupation of Arthur D. Lipson is acting as managing member of WILLC. The principal business of WIHP and WIAP is acquiring, holding and disposing of investments in various companies. The principal business of BPIP and BPP is acquiring, holding and disposing of investments in various companies. The principal business of BPM is acting as the managing member of BPIP and BPP. The principal occupation of each of Scott Franzblau and Robert Ferguson is acting as a managing member of BPM. (d) No Reporting Person has, during the last five years, been convicted in a criminal proceeding (excluding traffic violations or similar misdemeanors). (e) No Reporting Person has, during the last five years, been party to a civil proceeding of a judicial or administrative body of competent jurisdiction and as a result of such proceeding was or is subject to a judgment, decree or final order enjoining future violations of, or prohibiting or mandating activities subject to, federal or state securities laws or finding any violation with respect to such laws. (f) Messrs. Lipson, Franzblau, and Ferguson are citizens of the United States of America. ITEM 3. SOURCE AND AMOUNT OF FUNDS OR OTHER CONSIDERATION The aggregate purchase price of the 1,632,641 Shares beneficially owned by WILLC is approximately $22,799,693. The Shares beneficially owned by WILLC consist of 1,000 Shares that were acquired with WILLC's working capital, 793,939 Shares that were acquired with WIHP's working capital and 837,702 Shares that were acquired with WIAP's working capital. The aggregate purchase price of the 870,800 Shares beneficially owned by BPM is approximately $11,575,928. The Shares beneficially owned by BPM consist of 430,800 Shares that were acquired with BPIP's working capital and 440,000 Shares that were acquired with BPP's working capital. ITEM 4. PURPOSE OF TRANSACTION The Reporting Persons purchased the Shares based on the Reporting Persons' belief that the Shares, when purchased, were undervalued and represented an attractive investment opportunity. Depending upon overall market conditions, other investment opportunities available to the Reporting Persons, and the availability of Shares at prices that would make the purchase of additional Shares desirable, the Reporting Persons may endeavor to increase their position in the Issuer through, among other things, the purchase of Shares on the open market or in private transactions or otherwise, on such terms and at such times as the Reporting Persons may deem advisable. The Reporting Persons are concerned by the discount to net asset value at which the Shares of the Issuer have been trading. The Reporting Persons believe that the Issuer should take appropriate action to cause the discount to net asset value to be eliminated or substantially reduced. The Reporting Persons may engage in discussions with management and the Board of the Issuer about possible ways to reduce or eliminate the discount. The Reporting Persons reserve the right to take any action they deem appropriate related to this issue. No Reporting Person has any present plan or proposal which would relate to or result in any of the matters set forth in subparagraphs (a) - (j) of Item 4 of Schedule 13D except as set forth herein or such as would occur upon completion of any of the actions discussed above. Each of the Reporting Persons intends to review his/its investment in the Issuer on a continuing basis and may engage in discussions with management and the Board of the Issuer concerning the business, operations and future plans of the Issuer. Depending on various factors including, without limitation, the Issuer's financial position and investment strategy, the price levels of the Shares, conditions in the securities markets and general economic and industry conditions, each of the Reporting Persons may in the future take such actions with respect to his/its investment in the Issuer as he/it deems appropriate including, without limitation, seeking Board representation, making proposals to the Issuer concerning changes to the capitalization, ownership structure or operations of the Issuer, purchasing additional Shares, selling some or all of its Shares, engaging in short selling of or any hedging or similar transaction with respect to the Shares or changing its intention with respect to any and all matters referred to in Item 4. ITEM 5. INTEREST IN SECURITIES OF THE ISSUER (a) The aggregate percentage of Shares reported owned by each person named herein is based upon 28,706,981 Shares outstanding as of June 2, 2006, as reported in the Issuer's Form DEF 14A filed with the Securities and Exchange Commission on June 14, 2006. An affiliate of WILLC, Western Investment Institutional Partners LLC ("WIIP"), acquired Shares of the Issuer prior to 12/30/2005, and on 12/18/2006 sold all Shares, as noted in Schedule A. As of the close of business on January 26, 2007, WIHP, WIAP, BPIP and BPP beneficially owned 793,939, 837,702, 430,800, and 440,000 Shares, respectively, representing approximately 2.8%, 2.9%, 1.5%, and 1.5%, respectively, of the Shares outstanding. WILLC beneficially owned 1,632,641 Shares, constituting approximately 5.7% of the Shares outstanding. Mr. Lipson beneficially owned 1,632,641 Shares, constituting approximately 5.7% of the Shares outstanding. As the general partner and managing member of WIHP and WIAP, respectively, WILLC may be deemed to beneficially own the 1,631,641 Shares beneficially owned in the aggregate by WIHP and WIAP, in addition to 1,000 Shares owned directly by WILLC. As the managing member of WILLC, Mr. Lipson may be deemed to beneficially own the 1,632,641 Shares beneficially owned by WILLC. As the managing member of BPIP and BPP, BPM may be deemed to beneficially own the 870,800 Shares beneficially owned in the aggregate by BPIP and BPP. As the managing members of BPM, Messrs. Franzblau and Ferguson may be deemed to beneficially own the 870,800 Shares beneficially owned by BPM. (b) Mr. Lipson is deemed to have sole voting and dispositive power over the Shares reported as beneficially owned by WILLC by virtue of his position as described in paragraph (a). Each of WILLC and Mr. Lipson is deemed to have sole voting and dispositive power over the Shares reported as beneficially owned by WIHP and WIAP by virtue of their respective positions as described in paragraph (a). Neither WILLC, Mr. Lipson, WIHP nor WIAP has voting or dispositive control over the Shares beneficially owned by BPIP, BPP, BPM, Mr. Franzblau or Mr. Ferguson. Each of BPM, Mr. Franzblau and Mr. Ferguson is deemed to have sole voting and dispositive power over the Shares reported as beneficially owned by BPIP and BPP by virtue of their respective positions as described in paragraph (a). Neither BPIP, BPP, BPM, Mr. Franzblau nor Mr. Ferguson has voting or dispositive control over the Shares beneficially owned by the other Reporting Persons. (c) Schedule A annexed hereto lists all transactions by the Reporting Persons in the Issuer's Shares during the past sixty days. All of such transactions were effected in the open market. (d) No person other than the Reporting Persons is known to have the right to receive, or the power to direct the receipt of dividends from, or proceeds from the sale of, the Shares. (e) Not applicable. ITEM 6. CONTRACTS, ARRANGEMENTS, UNDERSTANDINGS, OR RELATIONSHIPS WITH RESPECT TO SECURITIES OF THE ISSUER On January 26, 2007, the Reporting Persons entered into a Joint Filing Agreement in which the parties agreed to the joint filing on behalf of each of them of statements on Schedule 13D with respect to the securities of the Issuer. Other than as described herein, there are no contracts, arrangements, understandings or relationships among the Reporting Persons, or between the Reporting Persons and any other person, with respect to the securities of the Issuer. ITEM 7. MATERIAL TO BE FILED AS EXHIBITS 1. Joint Filing Agreement by and among Western Investment LLC, Arthur D. Lipson, Western Investment Hedged Partners LP, Western Investment Activism Partners LLC, Benchmark Plus Institutional Partners, L.L.C., Benchmark Plus Partners, L.L.C., Benchmark Plus Management, L.L.C., Scott Franzblau and Robert Ferguson, dated January 26, 2007. SIGNATURES After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct. Date: January 26, 2007 WESTERN INVESTMENT LLC By: /s/ Arthur D. Lipson, Sole Member WESTERN INVESTMENT HEDGED PARTNERS LP By: Western Investment LLC, its General Partner By: /s/ Arthur D. Lipson, Managing Member WESTERN INVESTMENT ACTIVISM PARTNERS LLC By: Western Investment LLC, its Managing Member By: /s/ Arthur D. Lipson, Managing Member /s/ Arthur D. Lipson ___________________ ARTHUR D. LIPSON BENCHMARK PLUS INSTITUTIONAL PARTNERS, L.L.C. By: Benchmark Plus Management, L.L.C., its Managing Member By: /s/ Scott Franzblau, Managing Member By: /s/ Robert Ferguson, Managing Member BENCHMARK PLUS PARTNERS, L.L.C. By: Benchmark Plus Management, L.L.C., its Managing Member By: /s/ Scott Franzblau, Managing Member By: /s/ Robert Ferguson, Managing Member BENCHMARK PLUS MANAGEMENT, L.L.C. By: /s/ Scott Franzblau, Managing Member By: /s/ Robert Ferguson, Managing Member /s/ Robert Ferguson ___________________ ROBERT FERGUSON /s/ Scott Franzblau ___________________ SCOTT FRANZBLAU SCHEDULE A Transaction Code Quantity Trade Date Price WIHP Buy 7,000 12/06/2006 $13.8630 Buy 3,700 12/07/2006 $13.9077 Buy 41,559 12/15/2006 $13.9522 Buy 10,000 12/18/2006 $13.9426 Sell 600 12/18/2006 $13.9462 Buy 61,000 12/19/2006 $13.9312 Buy 1,500 12/20/2006 $13.9297 Buy 22,433 12/21/2006 $13.9643 Buy 1,000 12/26/2006 $14.0650 Buy 14,800 12/29/2006 $14.0031 Buy 48,400 01/03/2007 $14.0203 Buy 16,400 01/04/2007 $14.0045 Buy 33,747 01/19/2007 $14.1461 Sell 700 01/19/2007 $14.2011 Buy 16,200 01/22/2007 $14.1848 Buy 2,900 01/23/2007 $14.1710 Buy 251,000 01/23/2007 $14.1800 Sell 500 01/24/2007 $14.1611 Sell 300 01/24/2007 $14.1477 Buy 100,000 01/26/2007 $14.2501 WIAP Buy 4,300 11/29/2006 $13.7173 Buy 6,500 12/04/2006 $13.8465 Buy 8,600 12/05/2006 $13.8662 Buy 7,000 12/06/2006 $13.8630 Buy 3,700 12/07/2006 $13.9077 Buy 22,200 12/12/2006 $13.8964 Buy 64,600 12/13/2006 $13.9466 Buy 31,502 12/14/2006 $13.9466 Buy 3,700 12/28/2006 $13.9677 Buy 1,000 01/05/2007 $13.9950 Buy 1,600 01/08/2007 $13.9113 Buy 5,400 01/09/2007 $13.9775 Buy 6,900 01/10/2007 $13.9993 Buy 10,800 01/11/2007 $14.0480 Buy 12,600 01/12/2007 $14.0442 Buy 40,000 01/16/2007 $14.0503 Buy 22,200 01/17/2007 $14.0938 Buy 41,700 01/18/2007 $14.1231 Buy 16,300 01/22/2007 $14.1848 Buy 2,800 01/23/2007 $14.1712 Buy 251,000 01/23/2007 $14.1800 Buy 100,000 01/26/2007 $14.2501 WIIP Sell 100 12/18/2006 $13.9045 Sell 3,400 12/18/2006 $13.9516 WILLC Buy 1,000 12/15/2006 $13.9585 BPP Buy 17,300 01/24/2007 $14.1870 Buy 100,000 01/26/2007 $14.2501 BPIP Buy 17,400 01/24/2007 $14.1870 Buy 100,000 01/26/2007 $14.2501 BPM NONE Mr. Lipson NONE Mr. Franzblau NONE Mr. Ferguson NONE JOINT FILING AGREEMENT In accordance with Rule 13d-1(k)(1)(iii) under the Securities Exchange Act of 1934, as amended, the persons named below agree to the joint filing on behalf of each of them of a Statement on Schedule 13D dated January 26, 2007 (including further amendments thereto) with respect to the Common Stock of Pioneer Tax Advantaged Balanced Trust. This Joint Filing Agreement shall be filed as an Exhibit to such Statement. Dated: January 26, 2007 WESTERN INVESTMENT LLC By: /s/ Arthur D. Lipson, Sole Member WESTERN INVESTMENT HEDGED PARTNERS LP By: Western Investment LLC, its General Partner By: /s/ Arthur D. Lipson, Managing Member WESTERN INVESTMENT ACTIVISM PARTNERS LLC By: Western Investment LLC, its Managing Member By: /s/ Arthur D. Lipson, Managing Member /s/ Arthur D. Lipson ____________________ ARTHUR D. LIPSON BENCHMARK PLUS INSTITUTIONAL PARTNERS, L.L.C. By: Benchmark Plus Management, L.L.C., its Managing Member By: /s/ Scott Franzblau, Managing Member By: /s/ Robert Ferguson, Managing Member BENCHMARK PLUS PARTNERS, L.L.C. By: Benchmark Plus Management, L.L.C., its Managing Member By: /s/ Scott Franzblau, Managing Member By: /s/ Robert Ferguson, Managing Member BENCHMARK PLUS MANAGEMENT, L.L.C. By: /s/ Scott Franzblau, Managing Member By: /s/ Robert Ferguson, Managing Member /s/ Robert Ferguson ___________________ ROBERT FERGUSON /s/ Scott Franzblau ___________________ SCOTT FRANZBLAU