Provides temporary FY2026 funding to keep many federal departments and programs operating at FY2025 spending rates until FY2026 appropriations are enacted or until October 31, 2025, and prevents agencies from starting new activities that were not funded in FY2025 (with special limits for the Department of Defense). It also allows NASA to use certain expired funds to finish paying valid Space Shuttle contract closeout costs through FY2030, and extends funding for two diabetes programs for one month with set dollar amounts.

Sets administrative rules for apportionment and grant timing, keeps some mandatory payments moving, and requires reporting on certain uses of funds. The NASA provision takes effect on enactment (or is treated as effective as of September 30, 2025 if enacted later).