STRUCTURING FEE AGREEMENT August [•], 2010

Exhibit 99.(h)(7)

STRUCTURING FEE AGREEMENT

August [•], 2010

Ameriprise Financial Services, Inc.
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Ladies and Gentlemen:

Reference is made to the Underwriting Agreement dated August [•], 2010 (the “Underwriting Agreement”), by and among BlackRock Build America Bond Trust (the “Fund”), BlackRock Advisors, LLC (the “Adviser”), BlackRock Investment Management, LLC and each of the Underwriters named therein, severally, with respect to the issue and sale of the Fund’s common shares of beneficial interest, par value $0.001 per share (the “Common Shares”) (the “Offering”), as described therein. Capitalized terms used herein and not otherwise defined shall have the meanings given to them in the Underwriting Agreement.

     1. Fee. In consideration of your services as a co-manager assisting the Adviser with respect to the structure and design of the Fund and the organization of the Fund as well as services related to the sale and distribution of the Fund’s Common Shares, the Adviser shall pay a fee to you in the aggregate amount of $[•] (the “Fee”). The sum total of this Fee, plus the structuring fees and sales incentive fee paid to certain other underwriters in connection with this offering, plus the underwriters’ counsel fees paid by the Fund and commissions paid to certain registered personnel of its broker-dealer affiliates shall not exceed 9.0% of the total price of the Fund’s Common Stock sold by the Fund pursuant to the Prospectus. The Fee shall be paid within 30 days of the [Closing Date], 2010. The Fee shall be paid by wire transfer to the order of Ameriprise Financial Services, Inc.

     In the event that the Adviser (or the Fund or any person or entity affiliated with the Adviser or the Fund or acting on behalf of or at the direction of any of the foregoing) compensates or agrees to compensate any other broker or dealer participating in the Offering (each, an “Other Broker”) for any services or otherwise in connection with the Offering or with respect to the Fund or its Common Shares (excluding for this purpose any compensation paid directly to the entire underwriting syndicate, as a group, pursuant to the Underwriting Agreement), and whether such compensation be denominated a fee, an expense reimbursement, a set-off, a credit or otherwise (such compensation with respect to any Other Broker, such Other Broker’s “Other Compensation”), then the amount of the Fee shall be increased as and to the extent necessary so that the Fee payable to you hereunder, expressed as a percentage of the aggregate price to the public of the Common Shares sold by you in the Offering (including any Common Shares over-allotted by you in the Offering regardless of whether the over-allotment option in the Offering is exercised), is no less than the Other Compensation, expressed as a percentage of the aggregate price to the public of the Common Shares sold by such Other Broker in the Offering.

     2. Term. This Agreement shall terminate upon the payment of the entire amount of the Fee, as specified in Section 1 hereof or upon the termination of the Underwriting Agreement without the Common Shares having been delivered and paid for.

     3. Indemnification. The Adviser agrees to the indemnification and other agreements set forth in the Indemnification Agreement attached hereto, the provisions of which are incorporated herein by reference and shall survive the termination, expiration or supersession of this Agreement.

     4. Information. The Adviser has furnished you with such information as you believe appropriate to your assignment hereunder (all such information so furnished being the “Information”). The Adviser recognizes and confirms that you (a) have used and relied primarily on the Information and on information available from generally recognized public sources in performing the services contemplated by this Agreement without having independently verified the same and (b) do not assume responsibility for the accuracy or completeness of the Information and such other information. To the best of the Adviser’s knowledge, the Information furnished by the Adviser, when delivered, was true and correct in all material respects and did not contain any material misstatement of fact or omit to state any material fact necessary to make the statements contained therein not misleading. The Adviser will promptly notify you if it learns of any material inaccuracy or misstatement in, or material omission from, any Information delivered to you. You agree to keep such Information confidential to the extent permitted by law.

     5. Not an Investment Adviser; No Fiduciary Duty. The Adviser acknowledges that you are not providing any advice hereunder as to the value of securities or regarding the advisability of purchasing or selling any securities for the Fund’s portfolio. No provision of this Agreement shall be considered as creating, nor shall any provision create, any obligation on the part of you, and you are not agreeing hereby, to: (i) furnish any advice or make any recommendations regarding the purchase or sale of portfolio securities; or (ii) render any opinions, valuations or recommendations of any kind or to perform any such similar services. The Adviser hereby acknowledges that your engagement under this Agreement is as an independent contractor and not in any other capacity, including as a fiduciary. Furthermore, the Adviser agrees that it is solely responsible for making its own judgments in connection with the matters covered by this Agreement (irrespective of whether you have advised or are currently advising the Adviser on related or other matters).

     6. Not Exclusive. Nothing herein shall be construed as prohibiting you or your affiliates from acting as an underwriter or financial adviser or in any other capacity for any other persons (including other registered investment companies or other investment managers), so long as your services to the Adviser are not impaired thereby.

     7. Assignment. This Agreement may not be assigned by any party without prior written consent of the other party.

     8. Amendment; Waiver. No provision of this Agreement may be amended or waived except by an instrument in writing signed by the parties hereto.

     9. Governing Law. This Agreement shall be governed by, and construed in accordance with, the laws of the State of New York.

     10. Counterparts. This Agreement may be executed in any number of counterparts, each of which shall be an original, and all of which, when taken together, shall constitute one agreement. Delivery of an executed signature page of this Agreement by facsimile transmission shall be effective as delivery of a manually executed counterpart hereof.

     This Agreement shall be effective as of the date first written above.

[Structuring Fee Agreement]

Indemnification Agreement

		August [•], 2010

Ameriprise Financial Services, Inc.
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Ladies and Gentlemen:

     In connection with the engagement of Ameriprise Financial Services, Inc. (the “Bank”) to assist the undersigned, BlackRock Advisors, LLC (together with its affiliates and subsidiaries, the “Company”) with respect to the matters set forth in the Structuring Fee Agreement dated August [•], 2010 between the Company and the Bank (the “Agreement”), in the event that the Bank, any of its affiliates, each other person, if any, controlling the Bank or any of its affiliates, their respective officers, current and former directors and employees, or the successors or assigns of any of the foregoing persons (the Bank and each such other person or entity being referred to as an “Indemnified Party”) becomes involved in any capacity in any claim, suit, action, proceeding, investigation or inquiry (including, without limitation, any shareholder or derivative action or arbitration proceeding) (collectively, a “Proceeding”) with respect to the services performed pursuant to and in accordance with the Agreement, the Company agrees to indemnify, defend and hold each Indemnified Party harmless to the fullest extent permitted by law, from and against any losses, claims, damages, liabilities and expenses, including the fees and expenses of counsel to the Indemnified Parties, with respect to the services performed pursuant to and in accordance with the Agreement, except to the extent that it shall be determined by a court of competent jurisdiction in a judgment that has become final in that it is no longer subject to appeal or other review, that such losses, claims, damages, liabilities and expenses resulted primarily from the gross negligence or willful misconduct of such Indemnified Party. The indemnification provided hereunder shall not extend to those matters indemnified under the Underwriting Agreement, dated August [•], 2010, by and among BlackRock Build America Bond Trust (the “Fund”), BlackRock Advisors, LLC, BlackRock Investment Management, LLC and each of the underwriters named therein. In addition, in the event that an Indemnified Party becomes involved in any capacity in any Proceeding with respect to the services performed pursuant to and in accordance with the Agreement, the Company will reimburse such Indemnified Party for its legal and other expenses (including the cost of any investigation and preparation) as such expenses are incurred by such Indemnified Party in connection therewith, except to the extent that it shall be determined by a court of competent jurisdiction in a judgment that has become final in that it is no longer subject to appeal or other review, that such legal and other expenses resulted from the gross negligence or willful misconduct of the Indemnified Party or the Indemnified Party is not otherwise entitled to indemnification hereunder. Promptly as reasonably practicable after receipt by an Indemnified Party of notice of the commencement of any Proceeding, such Indemnified Party will, if a claim in respect thereof is to be made under this paragraph, notify the Company in writing of the commencement thereof; but the failure so to notify the Company (i) will not relieve the Company from liability under this paragraph to the extent it is not materially prejudiced as a result thereof and (ii) in any event shall not relieve the Company from any liability which it may have otherwise than on account of this Indemnification Agreement. Counsel to the Indemnified Parties shall be selected by the Bank. An indemnifying party may participate at its own expense in the defense of any such action; provided, however, that counsel to the indemnifying party shall not (except with the consent of the Indemnified Parties) also be counsel to the Indemnified Party. No indemnifying party shall, without the prior written consent of the Indemnified Parties, settle or compromise or consent to the entry of any judgment with respect to any litigation, or any investigation or proceeding by any governmental agency or body, commenced or threatened, or any claim whatsoever in respect of which indemnification or

contribution could be sought hereunder (whether or not the Indemnified Parties are actual or potential parties thereto), unless such settlement, compromise or consent (i) includes an unconditional release of each Indemnified Party from all liability arising out of such litigation, investigation, proceeding or claim and (ii) does not include a statement as to or an admission of fault, culpability or a failure to act by or on behalf of any Indemnified Party.

     If such indemnification were not to be available for any reason, the Company agrees to contribute to the losses, claims, damages, liabilities and expenses involved (i) in the proportion appropriate to reflect the relative benefits received or sought to be received by the Company and its stockholders and affiliates, on the one hand, and the Indemnified Parties, on the other hand, in the matters contemplated by the Agreement or (ii) if (but only if and to the extent) the allocation provided for in clause (i) is for any reason held unenforceable, in such proportion as is appropriate to reflect not only the relative benefits referred to in clause (i) but also the relative fault of the Company and its stockholders and affiliates, on the one hand, and the party entitled to contribution, on the other hand, as well as any other relevant equitable considerations. The Company agrees that for the purposes of this paragraph the relative benefits received, or sought to be received, by the Company and its stockholders and affiliates, on the one hand, and the party entitled to contribution, on the other hand, of a transaction as contemplated shall be deemed to be in the same proportion that the total value received by or paid to or contemplated to be received by or paid to by the Company or its stockholders or affiliates, as the case may be, as a result of or in connection with the transaction (whether or not consummated) for which the Bank has been retained to perform services bears to the fees paid to the Bank under the Agreement; provided, that in no event shall the Company contribute less than the amount necessary to assure that the Indemnified Parties are not liable for losses, claims, damages, liabilities and expenses in excess of the amount of fees actually received by the Bank pursuant to the Agreement. Relative fault shall be determined by reference to, among other things, whether any alleged untrue statement or omission or any other alleged conduct relates to information provided by the Company or other conduct by the Company (or its employees or other agents), on the one hand, or by the Bank, on the other hand. Notwithstanding the provisions of this paragraph, an Indemnified Party shall not be entitled to contribution from the Company if it is determined that such Indemnified Party was guilty of fraudulent misrepresentation (within the meaning of Section 11(f) of the Securities Act of 1933, as amended) and the Company was not guilty of such fraudulent misrepresentation. The Company will not settle any Proceeding in respect of which indemnity may be sought hereunder, whether or not an Indemnified Party is an actual or potential party to such Proceeding, without the Bank’s prior written consent (which consent shall not be unreasonably withheld). The foregoing indemnity and contribution agreement shall be in addition to any rights that any Indemnified Party may have at common law or otherwise.

     Promptly as reasonably practicable after receipt by an Indemnified Party of notice of the commencement of any Proceeding, the Indemnified Party will, if a claim in respect thereof is to be made under this paragraph, notify the Company in writing of the commencement thereof; but the failure so to notify the Company (i) will not relieve the Company from liability under this paragraph to the extent it is not materially prejudiced as a result thereof and (ii) in any event shall not relieve the Company from any liability which it may have otherwise than on account of this Indemnification Agreement.

     The Company agrees that no Indemnified Party shall have any liability to the Company or any person asserting claims on behalf of or in right of the Company with respect to the services performed pursuant to and in accordance with the Agreement, except to the extent that it shall be determined by a court of competent jurisdiction in a judgment that has become final in that it is no longer subject to appeal or other review that any losses, claims, damages, liabilities or expenses incurred by the Company resulted primarily from the gross negligence or willful misconduct of the Bank in performing the services that are the subject of the Agreement.

     THIS INDEMNIFICATION AGREEMENT AND ANY CLAIM, COUNTERCLAIM OR DISPUTE OF ANY KIND OR NATURE WHATSOEVER WITH RESPECT TO THE SERVICES PERFORMED PURSUANT TO AND IN ACCORDANCE WITH THE AGREEMENT (“CLAIM”), DIRECTLY OR INDIRECTLY, SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK. EXCEPT AS SET FORTH BELOW, NO CLAIM MAY BE COMMENCED, PROSECUTED OR CONTINUED IN ANY COURT OTHER THAN THE COURTS OF THE STATE OF NEW YORK LOCATED IN THE CITY AND COUNTY OF NEW YORK OR IN THE UNITED STATES DISTRICT COURT FOR THE SOUTHERN DISTRICT OF NEW YORK, WHICH COURTS SHALL HAVE EXCLUSIVE JURISDICTION OVER THE ADJUDICATION OF SUCH MATTERS, AND THE COMPANY AND THE INDEMNIFIED PARTIES CONSENT TO THE JURISDICTION OF SUCH COURTS AND PERSONAL SERVICE WITH RESPECT THERETO. THE COMPANY HEREBY CONSENTS TO PERSONAL JURISDICTION, SERVICE AND VENUE IN ANY COURT IN WHICH ANY CLAIM ARISING OUT OF OR IN ANY WAY RELATING TO THIS AGREEMENT IS BROUGHT BY ANY THIRD PARTY AGAINST THE BANK OR ANY INDEMNIFIED PARTY. EACH INDEMNIFIED PARTY AND THE COMPANY WAIVES ALL RIGHT TO TRIAL BY JURY IN ANY PROCEEDING OR CLAIM (WHETHER BASED UPON CONTRACT, TORT OR OTHERWISE) ARISING OUT OF OR IN ANY WAY RELATING TO THIS AGREEMENT. EACH INDEMNIFIED PARTY AND THE COMPANY AGREES THAT A FINAL JUDGMENT IN ANY PROCEEDING OR CLAIM ARISING OUT OF OR IN ANY WAY RELATING TO THIS AGREEMENT BROUGHT IN ANY SUCH COURT SHALL BE CONCLUSIVE AND BINDING UPON THE COMPANY AND THE INDEMNIFIED PARTY, AS THE CASE MAY BE, AND MAY BE ENFORCED IN ANY OTHER COURTS TO THE JURISDICTION OF WHICH THE COMPANY AND THE INDEMNIFIED PARTY, AS THE CASE MAY BE, IS OR MAY BE SUBJECT, BY SUIT UPON SUCH JUDGMENT.

     The foregoing Indemnification Agreement shall remain in full force and effect notwithstanding any termination of the Bank’s engagement under the Agreement. This Indemnification Agreement may be executed in two or more counterparts, each of which shall be deemed an original, but all of which shall constitute one and the same agreement.

[Indemnification Agreement]