This bill proposes amendments to part A of title IV of the Social Security Act, which governs the Temporary Assistance for Needy Families (TANF) program. Its primary aim is to enhance financial management and flexibility for states receiving these block grants, by introducing specific timeframes for states to utilize their allocated funds. Under the proposed changes, states would be required to obligate TANF funds by the end of the fiscal year following their receipt and expend them by the end of the second succeeding fiscal year. Crucially, it also allows states to establish a "rainy day fund" by reserving up to 15 percent of annual funds for future use. This reserve is capped at 50 percent of the previous fiscal year's allocation, and states must notify the Secretary of their intent to reserve funds.