10% COINSURANCE ECONOMIC TRUST AGREEMENT Dated as of[ ], 2010 among

Exhibit 10.8

Form of Reinsurance Trust Agreement (PLIC 10% Economic)

10% COINSURANCE ECONOMIC TRUST AGREEMENT

Dated as of [            ], 2010

among

PRIME REINSURANCE COMPANY, INC.

as Grantor,

PRIMERICA LIFE INSURANCE COMPANY, INC.

as Beneficiary

and

CITIBANK, N.A.

as Trustee

TABLE OF CONTENTS

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10% COINSURANCE ECONOMIC TRUST AGREEMENT

This 10% COINSURANCE ECONOMIC TRUST AGREEMENT (together with any and all exhibits, this “Agreement”) dated [            ], 2010, made by and among Prime Reinsurance Company, Inc., a Vermont special purpose financial captive insurance company (the “Grantor”), Primerica Life Insurance Company, a Massachusetts-domiciled stock life insurance company (the “Beneficiary”), and Citibank, N.A., a national banking institution organized under the laws of the United States, as trustee (in such capacity, the “Trustee”) (the Grantor, the Beneficiary and the Trustee are hereinafter each sometimes referred to individually as a “Party” and collectively as the “Parties”).

The Parties hereto agree as follows:

1. Deposit of Assets to the Trust Account.

2. Withdrawal of Assets from the Trust Account.

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3. Redemption, Investment and Substitution of Assets.

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4. Income. All payments of interest, dividends and other income (hereinafter referred to as “Income”) in respect to Assets in the Trust Account shall be deposited directly into the Trust Account. To the extent the Trustee shall collect and receive Income from the Trust Account, it shall deposit the amount of such Income directly into the Trust Account. The Trustee shall have no duties or obligations as Trustee with respect to the payment of Income by the issuer of the Assets.

5. Right to Vote Assets. The Trustee shall forward all annual and interim stockholder reports and all proxies and proxy materials relating to the Assets in the Trust Account to the Grantor. Subject to other provisions of this Agreement and the requirement that title to Assets be

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recorded in the name of the Trustee, the Grantor shall have the full and unqualified right to vote any Assets in the Trust Account.

6. Additional Rights and Duties of the Trustee.

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7. The Trustee’s Compensation, Expenses, etc.

8. Resignation or Removal of the Trustee.

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9. Termination of the Trust Account.

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10. Representations and Warranties

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11. Definitions.

Except as the context shall otherwise require, the following terms shall have the following meanings for all purposes of this Agreement (the definitions to be applicable to both the singular and the plural forms of each term defined if both forms of such term are used in this Agreement):

The term “Affiliate” with respect to any corporation shall mean a corporation which directly, or indirectly through one or more intermediaries, controls or is controlled by, or is under common control with, such corporation.

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The term “Beneficiary” shall include any successor of the Beneficiary by operation of law including, without limitation, any liquidator, rehabilitator, receiver or conservator.

The term “Beneficiary Withdrawal Notice” means a notice substantially in the form of the specimen notice attached to this Agreement as Exhibit A.

The term “control” (including the related terms “controlled by” and “under common control with”) shall mean the ownership, directly or indirectly, of more than 10% of the voting stock of a corporation.

The term “Eligible Securities” means cash in United States dollars, certificates of deposit issued by a United States bank and payable in United States dollars, and investments permitted by M.G.L. c. 175 or any combination of the above, provided investments in or issued by an entity controlling, controlled by or under common control with either the Grantor or the Beneficiary shall not exceed 5% of total investments. Commercial paper and other obligations of institutions must be issued by a corporation (other than the Grantor or Beneficiary, or any Affiliate of either) which is organized and existing under the laws of the United States of America, unless otherwise allowed by M.G.L. c. 175. The Eligible Securities are further subject to and limited by, the investment guidelines set forth in the attached Schedule A to this Agreement.

The term “Governmental Authority” means any federal, state, county, local, foreign or other governmental or public agency, instrumentality, commission, authority or self-regulatory organization, board or body.

The term “Grantor Withdrawal Notice” means a notice substantially in the form of the specimen notice attached to this Agreement as Exhibit B.

The term “Parent” shall mean an institution that, directly or indirectly, controls another institution.

The term “person” shall mean and include an individual, a corporation, a partnership, an association, a trust, an unincorporated organization or a government or political subdivision thereof.

The term “Subsidiary” shall mean an institution controlled, directly or indirectly, by another institution.

The term “Substitution Notice” means a notice substantially in the form of the specimen notice attached to this Agreement as Exhibit C.

The term “Trust” shall mean the trust formed hereunder.

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12. Governing Law.

This Agreement shall be subject to and governed by the laws of the State of Massachusetts. Each party hereto hereby waives trial by jury in any judicial proceeding involving, directly or indirectly, any matter (whether sounding in tort, contract or otherwise) in any way arising out of or related to this agreement or the relationship established hereunder. This provision is a material inducement for the parties to enter into this Agreement.

13. Successors and Assigns.

Except as expressly permitted by Section 8 of this Agreement, no Party may assign this Agreement or any of its rights or obligations hereunder without the prior written consent of both the Grantor and the Beneficiary. The provisions of this Agreement shall be binding upon and inure to the benefit of the Parties and their respective successors and assigns.

14. Severability.

In the event that any provision of this Agreement shall be declared invalid or unenforceable by any regulatory body or court having jurisdiction, such invalidity or unenforceability shall not affect the validity or enforceability of the remaining portions of this Agreement.

15. Entire Agreement.

This Agreement constitutes the entire agreement among the Parties, and there are no conditions or qualifications relative to this Agreement which are not fully expressed in this Agreement.

16. Amendments.

This Agreement may be modified or otherwise amended, and the observance of any term of this Agreement may be waived, if such modification, amendment or waiver is in writing and signed by the Parties.

17. Notices

Any notice and other communication required or permitted hereunder shall be in writing and shall be delivered personally, sent by facsimile transmission (and immediately after transmission confirmed by telephone), or sent by certified, registered or express mail, postage prepaid; provided, however, that any Party delivering a communication by facsimile transmission shall retain the electronically generated confirmation of delivery, showing the telephone number to which the transmission was sent and the date and time of the transmission. Any such notice shall be deemed given when so delivered personally or sent by facsimile transmission (and immediately after transmission confirmed by telephone), or, if mailed, on the date shown on the receipt therefore, as follows:

if to the Grantor:

Prime Reinsurance Company, Inc.

c/o Marsh Management Services Inc.

100 Bank Street, Suite 600,

Burlington, Vermont 05402

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with copies to (which shall not constitute notice to the Grantor for purposes of this Section 17):

Robert Sullivan, Esq.

Susan Sutherland, Esq.

Skadden, Arps, Slate, Meagher & Flom LLP

Four Times Square

New York, New York 10036

(212)  ###-###-####

if to the Beneficiary:

Primerica Life Insurance Company

3120 Breckinridge Boulevard

Duluth, GA 30099-0001

Facsimile: (770)  ###-###-####

with copies to (which shall not constitute notice to the Beneficiary for purposes of this Section 17):

Donald B. Henderson, Jr., Esq.

Dewey & LeBoeuf LLP

1301 Avenue of the Americas

New York, NY 10019

(212) 259-8000

If to the Trustee:

Citibank, N.A.

111 Wall St.

New York, NY 10005

Attn: William Mulrenin

Telephone: +1 (212)  ###-###-####

Facsimile: +1 (212)  ###-###-####

with copies to (which shall not constitute notice to the Trustee for purposes of this Section 17):

[—]

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Each Party may from time to time designate a different address for notices, directions, requests, demands, acknowledgments and other communications by giving written notice of such change to the other Parties.

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IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be executed and delivered by their respective officers thereunto duly authorized as of the date first above written.

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