To provide for interim appropriations for the National Capital Planning Commission and the Commission of Fine Arts with respect to any fiscal year for which appropriations are not otherwise provided for the commissions.

Creates a temporary interim funding mechanism to keep the National Capital Planning Commission and the Commission of Fine Arts operating when Congress does not provide a new appropriation. Starting in fiscal year 2025, if one of those bodies had an appropriation in a year but none in the next, the bill would let the Treasury pay whatever sums are necessary to keep them operating at the previous year's rate and under the same terms until Congress enacts a new appropriation, and any interim spending would be charged to that later appropriation and the interim authority would end.