Ala. Code § 19-4A-4: Reasonable Rate of Return; Considerations.

In the absence of specific instructions in the governing document, the fiduciary shall select an investment vehicle for idle funds in each fiduciary account which should provide a reasonable rate of return, taking into consideration the income needs of the current income beneficiary, the quality of the investment, the liquidity needs of the fiduciary account and the expense of making the funds productive of income.