AMENDMENT NO. 1 TO INSURED DEPOSIT ACCOUNT AGREEMENT

Exhibit 10.3

Execution Version

AMENDMENT NO. 1 TO INSURED DEPOSIT ACCOUNT AGREEMENT

This Amendment No. 1 to the Insured Deposit Account Agreement referred to below, dated as of October 24, 2016 (this “Amendment”), is by and among TD Bank USA, National Association, a national bank with its main office in the State of Delaware (“TD Bank USA”), TD Bank, National Association, a national bank with its main office in the State of Delaware (“TD Bank,” and together with TD Bank USA, the “Depository Institutions”), TD Ameritrade, Inc., a corporation incorporated under the laws of the State of New York (“TDA”), TD Ameritrade Clearing, Inc., a corporation incorporated under the laws of the State of Nebraska (“TDAC”), TD Ameritrade Trust Company, a non-depository trust company duly incorporated in the State of Maine (“TDATC,” and together with TDA and TDAC, the “Ameritrade Companies”), TD Ameritrade Holding Corporation (“Ameritrade Parent”) and The Toronto-Dominion Bank, a Canadian chartered bank (“TD Parent”). Capitalized terms used but not defined herein shall have the meaning given to such terms in the IDA Agreement (defined below).

Recitals

WHEREAS, the Depository Institutions, the Ameritrade Companies and TD Parent are parties to that Insured Deposit Account Agreement, effective as of January 1, 2013 (as amended, supplemented, restated or otherwise modified from time to time, the “IDA Agreement”);

WHEREAS, Ameritrade Parent is a party to that certain Agreement and Plan of Merger, dated as of the date hereof (the “Holdco Merger Agreement”), by and among Scottrade Financial Services, Inc., a corporation incorporated under the laws of the State of Delaware (“Scottrade”), Rodger O. Riney, as Voting Trustee of the Rodger O. Riney Family Voting Trust U/A/D 12/31/2012, created under the Voting Trust Agreement dated December 31, 2012, as amended on January 21, 2016 (the “Trust”), Ameritrade Parent and Alto Acquisition Corp., a corporation incorporated under the laws of the State of Delaware, pursuant to which, upon the terms and subject to the conditions set forth therein, Ameritrade Parent has agreed to acquire Scottrade upon the effective time of the consummation of the transactions contemplated thereby (the “Closing”);

WHEREAS, TD Bank is a party to that certain Agreement and Plan of Merger, dated as of the date hereof (the “Bank Merger Agreement”), by and among Scottrade, Scottrade Bank, a federal savings association (“Scottrade Bank”), Rodger O. Riney, as Voting Trustee of the Trust, and TD Bank, pursuant to which, upon the terms and subject to the conditions set forth therein, TD Bank has agreed to acquire Scottrade Bank immediately prior to the Closing;

WHEREAS, Scottrade is a party to certain sweep agreements (the “Program Bank Arrangements”) with other depository institutions (the “Program Banks”);

WHEREAS, the parties intend for Scottrade to participate in the sweep program provided for in the IDA Agreement following the Closing and to amend the IDA Agreement to reflect such inclusion as well as the parties’ agreement with respect to the treatment of Scottrade brokerage accounts following the Closing; and

NOW THEREFORE, in consideration of the foregoing, and of the covenants and agreements contained herein, and for other good and valuable consideration, the receipt and sufficiency of which is hereby acknowledged, and intending to be legally bound hereby, the parties hereto hereby agree as follows:

ARTICLE I

AMENDMENTS

Section 1.1. Addition of Scottrade to the IDA Agreement.

Section 1.2. Program Bank Arrangements.

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Section 1.3. Definitions. In furtherance of the foregoing, effective upon the Closing:

Section 1.4. Termination. This Amendment shall automatically terminate if the Holdco Merger Agreement or the Bank Merger Agreement is terminated in accordance with its respective terms prior to the Closing.

ARTICLE II

MISCELLANEOUS

Section 2.1. Continued Effect of Original Agreement. As amended hereby, the IDA Agreement as heretofore amended is hereby ratified and confirmed and agreed to by all of the parties hereto and continues in full force and effect. All references in the IDA Agreement to the “Agreement” shall be read as references to the IDA Agreement, as amended by this Amendment and as it may be further amended, supplemented, restated or otherwise modified from time to time.

Section 2.2. Counterparts. This Amendment may be executed by facsimile in separate counterparts each of which shall be an original and all of which taken together shall constitute one and the same agreement.

Section 2.3. Governing Law. This Amendment shall be governed by and construed in accordance with the laws of the State of New York (except to the extent that mandatory provisions of federal law are applicable), without giving effect to the principles of conflicts of law, and shall be binding upon the successors and assigns of the parties.

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[signature pages follow]

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IN WITNESS WHEREOF, the parties hereto have executed this Amendment as of the date set forth in the first paragraph hereof.