MANAGEMENT CONTRACT between COLCHESTER STREET TRUST TAX-EXEMPT PORTFOLIO and FIDELITY MANAGEMENT & RESEARCH COMPANY

Exhibit (d)(6)

MANAGEMENT CONTRACT

between

COLCHESTER STREET TRUST

TAX-EXEMPT PORTFOLIO

and

FIDELITY MANAGEMENT & RESEARCH COMPANY

AGREEMENT AMENDED and RESTATED as of the 1st day of December, 2007, by and between Fidelity Colchester Street Trust a Delaware statutory trust which may issue one or more series of shares of beneficial interest (hereinafter called the "Trust"), on behalf of Tax-Exempt Portfolio (hereinafter called the "Portfolio") and Fidelity Management & Research Company, a Massachusetts corporation (hereinafter called the "Adviser").

Required authorization and approval by Trustees having been obtained, the Trust, on behalf of the Portfolio, and the Adviser hereby consent, pursuant to Paragraph 5 of the existing Management Contract dated May 29, 1998, to a modification of said contract in the manner set fourth below. This Amended and Restated Management Contract shall, when executed by duly authorized officers of the Trust and Adviser, take effect December 1, 2007.

1. (a) Investment Advisory Services. The Adviser undertakes to act as investment adviser of the Portfolio and shall, subject to the supervision of the Trust's Board of Trustees, direct the investments of the Portfolio in accordance with the investment objective, policies and limitations as provided in the Portfolio's Prospectus or other governing instruments, as amended from time to time, the Investment Company Act of 1940 and rules thereunder, as amended from time to time (the "1940 Act"), and such other limitations as the Portfolio may impose by notice in writing to the Adviser. The Adviser shall also furnish for the use of the Portfolio office space and all necessary office facilities, equipment and personnel for servicing the investments of the Portfolio; and shall pay the salaries and fees of all officers of the Trust, of all Trustees of the Trust who are "interested persons" of the Trust or of the Adviser and of all personnel of the Trust or the Adviser performing services relating to research, statistical and investment activities. The Adviser is authorized, in its discretion and without prior consultation with the Portfolio, to buy, sell, lend and otherwise trade in any stocks, bonds and other securities and investment instruments on behalf of the Portfolio. The investment policies and all other actions of the Portfolio are and shall at all times be subject to the control and direction of the Trust's Board of Trustees.

(b) Management Services. The Adviser shall perform (or arrange for the performance by its affiliates of) the management and administrative services necessary for the operation of the Trust. The Adviser shall, subject to the supervision of the Board of Trustees, perform various services for the Portfolio, including but not limited to: (i) providing the Portfolio with office space, equipment and facilities (which may be its own) for maintaining its organization; (ii) on behalf of the Portfolio, supervising relations with, and monitoring the performance of, custodians, depositories, transfer and pricing agents, accountants, attorneys, underwriters, brokers and dealers, insurers and other persons in any capacity deemed to be necessary or desirable; (iii) preparing all general shareholder communications, including shareholder reports; (IV) conducting shareholder relations; (v) maintaining the Trust's existence and its records; (vi) during such times as shares are publicly offered, maintaining the registration and qualification of the Portfolio's shares under federal and state law; and (Vii) investigating the development of and developing and implementing, if appropriate, management and shareholder services designed to enhance the value or convenience of the Portfolio as an investment vehicle.

The Adviser shall also furnish such reports, evaluations, information or analyses to the Trust as the Trust's Board of Trustees may request from time to time or as the Adviser may deem to be desirable. The Adviser shall make recommendations to the Trust's Board of Trustees with respect to Trust policies, and shall carry out such policies as are adopted by the Trustees. The Adviser shall, subject to review by the Board of Trustees, furnish such other services as the Adviser shall from time to time determine to be necessary or useful to perform its obligations under this Contract.

The Adviser shall, in acting hereunder, be an independent contractor. The Adviser shall not be an agent of the Portfolio.

2. It is understood that the Trustees, officers and shareholders of the Trust are or may be or become interested in the Adviser as directors, officers or otherwise and that directors, officers and stockholders of the Adviser are or may be or become similarly interested in the Trust, and that the Adviser may be or become interested in the Trust as a shareholder or otherwise.

3. For the services and facilities to be furnished hereunder, the Adviser shall receive an annual management fee payable monthly as soon as practicable after the last day of each month and equivalent to an annual rate of 0.14% of average daily net assets of the Portfolio of the Trust.

4. It is understood that the Portfolio will pay all its expenses other than those expressly stated to be payable by the Adviser hereunder, which expenses payable by the Portfolio shall include, without limitation, (i) interest and taxes; (ii) brokerage commissions and other costs in connection with the purchase or sale of securities and other investment instruments; (iii) fees and expenses of the Trust's Trustees other than those who are "interested persons" of the Trust or the Adviser; (IV) legal and audit expenses; (v) custodian, registrar and transfer agent fees and expenses; (vi) fees and expenses related to the registration and qualification of the Trust and the Portfolio's shares for distribution under state and federal securities laws; (Vii) expenses of printing and mailing reports and notices and proxy material to shareholders of the Portfolio; (Viii) all other expenses incidental to holding meetings of the Portfolio's shareholders, including proxy solicitations therefor; (Ix) a pro rata share, based on relative net assets of the Portfolio and other registered investment companies having Advisory and Service or Management Contracts with the Adviser, of 50% of insurance premiums for fidelity and other coverage; (x) its proportionate share of association membership dues; (xi) expenses of typesetting for printing Prospectuses and Statements of Additional Information and supplements thereto; (xii) expenses of printing and mailing Prospectuses and Statements of Additional Information and supplements thereto sent to existing shareholders; and (xiii) such non-recurring or extraordinary expenses as may arise, including those relating to actions, suits or proceedings to which the Portfolio is a party and the legal obligation which the Portfolio may have to indemnify the Trust's Trustees and officers with respect thereto.

5. The services of the Adviser to the Portfolio are not to be deemed exclusive, the Adviser being free to render services to others and engage in other activities, provided, however, that such other services and activities do not, during the term of this Contract, interfere, in a material manner, with the Adviser's ability to meet all of its obligations with respect to rendering services to the Portfolio hereunder. In the absence of willful misfeasance, bad faith, gross negligence or reckless disregard of obligations or duties hereunder on the part of the Adviser, the Adviser shall not be subject to liability to the Portfolio or to any shareholder of the Portfolio for any act or omission in the course of, or connected with, rendering services hereunder or for any losses that may be sustained in the purchase, holding or sale of any security.

6. (a) Subject to prior termination as provided in sub-paragraph (d) of this paragraph 6, this Contract shall continue in force until June 30, 2008 and indefinitely thereafter, but only so long as the continuance after such date shall be specifically approved at least annually by vote of the Trustees of the Trust or by vote of a majority of the outstanding voting securities of the Portfolio.

(b) This Contract may be modified by mutual consent, such consent on the part of the Trust to be authorized by vote of a majority of the outstanding voting securities of the Portfolio.

(c) In addition to the requirements of sub-paragraphs (a) and (b) of this paragraph 6, the terms of any continuance or modification of this Contract must have been approved by the vote of a majority of those Trustees of the Trust who are not parties to the Contract or interested persons of any such party, cast in person at a meeting called for the purpose of voting on such approval.

(d) Either party hereto may, at any time on sixty (60) days' prior written notice to the other, terminate this Contract, without payment of any penalty, by action of its Trustees or Board of Directors, as the case may be, or with respect to the Portfolio by vote of a majority of the outstanding voting securities of the Portfolio. This Contract shall terminate automatically in the event of its assignment.

7. The Adviser is hereby expressly put on notice of the limitation of shareholder liability as set forth in the Trust's Declaration of Trust and agrees that the obligations assumed by the Trust pursuant to this Contract shall be limited in all cases to the Portfolio and its assets, and the Adviser shall not seek satisfaction of any such obligation from the shareholders or any shareholder of the Portfolio or any other Portfolios of the Trust. In addition, the Adviser shall not seek satisfaction of any such obligations from the Trustees or any individual Trustee. The Adviser understands that the rights and obligations of any Portfolio under the Declaration of Trust are separate and distinct from those of any and all other Portfolios.

The terms "vote of a majority of the outstanding voting securities," "assignment," and "interested persons," when used herein, shall have the respective meanings specified in the 1940 Act, as now in effect or as hereafter amended, and subject to such orders as may be granted by the Securities and Exchange Commission.

IN WITNESS WHEREOF the parties have caused this instrument to be signed in their behalf by their respective officers thereunto duly authorized all as of the date written above.

FIDELITY XXXXXXXXXX XXXXXX TRUST

on behalf of Tax-Exempt Portfolio

By: /s/Xxxxxxxxx Xxxxxxxxxx

Xxxxxxxxx Xxxxxxxxxx

Treasurer

FIDELITY MANAGEMENT & RESEARCH COMPANY

By: /s/XX Xxxxxx

XX Xxxxxx

Vice President