IRS Funding Accountability Act This bill delays for a 60-day period funding for the Internal Revenue Service (IRS) enforcement activities enacted by the Inflation Reduction Act (except for eliminating return processing backlogs and reducing call wait times) until an annual spending plan for such activities is submitted to the congressional tax and appropriation committees. Congress may enact a joint resolution of disapproval of the spending plan before the end of the 60-day period requiring the IRS to submit a new spending plan. The IRS and the Department of the Treasury must make quarterly reports to the committees on expenditures for enforcement activities. The bill requires reductions in appropriations to the IRS for any failure to submit required reports.