Exhibit 4.6

Bank of America Corporation

FOURTH SUPPLEMENTAL INDENTURE

Dated as of April 28, 2006

Supplementing the Indenture, dated

as of January 1, 1995, between

Bank of America Corporation (successor to NationsBank Corporation) and

The Bank of New York (successor to U.S. Bank Trust National Association), as Trustee, as supplemented by a

First Supplemental Indenture dated as of September 18, 1998,

Second Supplemental Indenture dated as of May 7, 2001

and

Third Supplemental Indenture dated as of July 28, 2004

THIS FOURTH SUPPLEMENTAL INDENTURE, DATED AS OF APRIL 28, 2006 (THE “FOURTH SUPPLEMENTAL INDENTURE”), IS MADE BY AND BETWEEN BANK OF AMERICA CORPORATION, A DELAWARE CORPORATION (THE “COMPANY”), AND THE BANK OF NEW YORK, A NEW YORK BANKING CORPORATION (THE “TRUSTEE”), UNDER THE INDENTURE REFERRED TO HEREIN.

W I T N E S S E T H:

WHEREAS, the Company and the Trustee previously executed and delivered an Indenture, dated as of January 1, 1995 and supplemented that Indenture by a First Supplemental Indenture dated as of September 18, 1998, a Second Supplemental Indenture dated as of May 7, 2001 and a Third Supplemental Indenture dated as of July 28, 2004 (collectively, the “Indenture”); and

WHEREAS, pursuant to the Indenture, the Company has issued and the Trustee has authenticated and delivered one or more series of the Company’s senior debt securities (the “Securities”); and

WHEREAS, currently, Section 3.02 of the Indenture requires that the Company or the Trustee, as the case may be, provide notice of redemption to the holders of Securities to be redeemed at least 10 and not more than 60 days prior to the date fixed for a redemption;

WHEREAS, the Company hereafter may be issuing additional series or tranches of Securities where the terms of those Securities require a period of notice of redemption to the holders of such Securities shorter than the period currently provided for in the Indenture;

WHEREAS, Section 10.01(e) of the Indenture provides that when authorized by a Board resolution, the Company and the Trustee may amend the Indenture without notice to or consent of the holders of the Securities in order to modify or add to any of the provisions of the Indenture for any Securities that are not Outstanding at the time of such change;

WHEREAS, Section 10.01(f) of the Indenture provides that when authorized by a Board resolution, the Company and the Trustee may amend the Indenture without notice to or consent of the holders of the Securities in order to cure any ambiguity or to correct or supplement any provision contained in the Indenture which may be defective or inconsistent with any other provisions contained in the Indenture or to make such other provisions in regard to matters or questions arising under the Indenture, provided such other provisions shall not adversely affect in any material respect the interests of holders of the Securities, including provisions necessary or desirable to provide for or facilitate the administration of the trusts under the Indenture;

WHEREAS, pursuant to Section 10.03 of the Indenture, the Trustee is fully protected in relying on an Officers Certificate and an Opinion of Counsel as conclusive evidence that this Fourth Supplemental Indenture complies with the provisions of Article Ten of the Indenture, and based upon that reliance, the Trustee has agreed to enter into this Fourth Supplemental Indenture; and

WHEREAS, this Fourth Supplemental Indenture has been duly authorized by a Board resolution and all other all necessary corporate action on the part of the Company.

NOW, THEREFORE, the Company and the Trustee agree as follows for the equal and ratable benefit of the holders of the Securities:

ARTICLE I

TERMS OF SECURITIES

SECTION 1.1 Additional Terms of Redemption.

Section 2.03(b) of the Indenture is hereby amended by:

“(20) any provisions relating to the purchase or redemption of all or any portion of a tranche or series of Securities, including the period of notice required to redeem those Securities; and

ARTICLE II

REDEMPTION OF SERIES OF NOTES

DESIGNATED BY OFFICERS OF THE COMPANY

SECTION 2.1 Redeemable Securities. Any Securities eligible for (a) mandatory redemption, (b) redemption upon the occurrence of an obligation of the Company to pay Additional Amounts or otherwise reimburse a holder of Securities for tax withheld from any payments of interest or principal by the Company or (c) redemption at the option of the Company or the holder are “Redeemable Securities.”

SECTION 2.2 Notice of Redemption. For any tranche or series of Redeemable Securities issued after the effective date of this Fourth Supplemental Indenture, the third sentence of Section 3.02 of the Indenture hereby is deleted in its entirety, and the following two sentences hereby are inserted in lieu thereof:

“The Company or the Trustee, as the case may be, shall give notice of such redemption, in the manner and to the extent set forth in Section 15.04, on that date prior to the date fixed for a redemption to the holders of such Securities so to be redeemed, as a whole or in part, (a) as set forth in Board Resolutions, as described in Section 2.03(b), or (b) as determined by the Chief Executive Officer,

the Chief Financial Officer, any Senior or other Vice President or the Treasurer of the Company (each, an “Authorized Officer”) and evidenced by the preparation of an offering document or an Officer’s Certificate specifying the period of notice of such redemption. If the Board Resolutions or an Authorized Officer do not specify a period of notice of such redemption, the Company or the Trustee, as the case may be, shall give notice of such redemption, in the manner and to the extent set forth in Section 15.04, at least 10 business days and not more than 60 calendar days prior to the date fixed for a redemption to the holders of such Securities so to be redeemed as a whole or in part.”

ARTICLE III

MISCELLANEOUS

SECTION 3.1 Indenture Remains in Full Force and Effect. Except as supplemented hereby, all provisions in the Indenture shall remain in full force and effect.

SECTION 3.2 Indenture and Supplemental Indentures Construed Together. This Fourth Supplemental Indenture is an indenture supplemental to and in implementation of the Indenture, and the Indenture and this Fourth Supplemental Indenture shall henceforth be read and construed together.

SECTION 3.3 Confirmation and Preservation of Indenture. The Indenture as supplemented by this Fourth Supplemental Indenture is in all respects confirmed and preserved.

SECTION 3.4 Conflict with Trust Indenture Act. If any provision of this Fourth Supplemental Indenture limits, qualifies or conflicts with any provision of the Trust Indenture Act (“TIA”) that is required under the TIA to be part of and govern any provision of this Fourth Supplemental Indenture, the provision of the TIA shall control. If any provision of this Fourth Supplemental Indenture modifies or excludes any provision of the TIA that may be so modified or excluded, the provision of the TIA shall be deemed to apply to the Indenture as so modified or to be excluded by this Fourth Supplemental Indenture, as the case may be.

SECTION 3.5 Severability. In case any provision in this Fourth Supplemental Indenture shall be invalid, illegal or unenforceable, the validity, legality and enforceability of the remaining provisions shall not in any way be affected or impaired thereby.

SECTION 3.6 Terms Defined in the Indenture. All capitalized terms not otherwise defined herein shall have the meanings ascribed to them in the Indenture.

SECTION 3.7 Headings. The Article and Section headings of this Fourth Supplemental Indenture have been inserted for convenience of reference only, are not to be considered part of this Fourth Supplemental Indenture and shall in no way modify or restrict any of the terms or provisions hereof.

SECTION 3.8 Benefits of Fourth Supplemental Indenture, etc. Nothing in this Fourth Supplemental Indenture or the Securities, express or implied, shall give to any Person, other than the parties hereto and thereto and their successors hereunder and thereunder and the holders of the Securities, any benefit of any legal or equitable right, remedy or claim under the Indenture, this Fourth Supplemental Indenture or the Securities.

SECTION 3.9 Certain Duties and Responsibilities of the Trustees. In entering into this Fourth Supplemental Indenture, the Trustee shall be entitled to the benefit of every provision of the Indenture relating to the conduct or affecting the liability or affording protection to the Trustee, whether or not elsewhere herein so provided.

SECTION 3.10 Counterparts. The parties may sign any number of copies of this Fourth Supplemental Indenture. Each signed copy shall be an original, but all of them together represent the same agreement.

SECTION 3.11 Governing Law. This Fourth Supplemental Indenture shall be governed by, and construed in accordance with, the laws of the State of New York but without giving effect to applicable principles of conflicts of law to the extent that the application of the laws of another jurisdiction would be required thereby.

SECTION 3.12 Effective Date. This Fourth Supplemental Indenture shall be effective on April 28, 2006.

[Signature Page Follows]

IN WITNESS WHEREOF, the parties have caused this Fourth Supplemental Indenture to be duly executed effective as of April 28, 2006.