The SSA may invest up to one half of its excess cash and reserves, undesignated funds, and designated funds not already governed by a specific investment policy, in a balanced variety of mutual funds. An even mix of medium risk investments from well established firms that include index funds, and large or mid-cap funds may be used. The remaining half must be invested conservatively such as certificates of deposit, money market funds, U.S. Treasury bills, and AAA-rated government and corporate bonds. Annual review and rebalancing will be conducted by the management committee concurrent with the annual budget review.

Excess will be defined at the annual budget review, considering predicted income and expenses for the budget year. The management committee shall review the 'low-to-medium risk' status of the society's investments annually, concurrently with the budget meeting, and make recommendations for investment changes based on that review.