Rev. Rul. 2025-24 — Internal Revenue Bulletin 2025-50

This revenue ruling provides various prescribed rates for federal income

tax purposes for December 2025 (the current month). Table 1 contains the short-term, mid-term, and long-term applicable federal rates (AFR) for the current month for purposes of section 1274(d) of the Internal Revenue Code. Table 2 contains the short-term, midterm, and long-term adjusted applicable federal rates (adjusted AFR) for the current month for purposes of section 1288(b). Table 3 sets forth the adjusted federal long-term rate and the longterm tax-exempt rate described in section 382(f). Table 4 contains the appro

priate percentages for determining the low-income housing credit described in section 42(b)(1) for buildings placed in service during the current month. However, under section 42(b)(2), the applicable percentage for non-federally subsidized new buildings placed in service after July 30, 2008, shall not be less than 9%. Finally, Table 5 contains the federal rate for determining the present value of an annuity, an interest for life or for a term of years, or a remainder or a reversionary interest for purposes of section 7520.

REV. RUL. 2025-24 TABLE 1 Applicable Federal Rates (AFR) for December 2025

Period for Compounding Annual Semiannual Quarterly Monthly Short-term AFR 3.66% 3.63% 3.61% 3.60% 110% AFR 4.03% 3.99% 3.97% 3.96% 120% AFR 4.41% 4.36% 4.34% 4.32% 130% AFR 4.78% 4.72% 4.69% 4.67% Mid-term AFR 3.79% 3.75% 3.73% 3.72% 110% AFR 4.17% 4.13% 4.11% 4.09% 120% AFR 4.55% 4.50% 4.47% 4.46% 130% AFR 4.94% 4.88% 4.85% 4.83% 150% AFR 5.71% 5.63% 5.59% 5.57% 175% AFR 6.67% 6.56% 6.51% 6.47% Long-term AFR 4.55% 4.50% 4.47% 4.46% 110% AFR 5.01% 4.95% 4.92% 4.90% 120% AFR 5.47% 5.40% 5.36% 5.34% 130% AFR 5.94% 5.85% 5.81% 5.78%

REV. RUL. 2025-24 TABLE 2 Adjusted AFR for December 2025

Period for Compounding Annual Semiannual Quarterly Monthly Short-term adjusted AFR 2.78% 2.76% 2.75% 2.74% Mid-term adjusted AFR 2.87% 2.85% 2.84% 2.83% Long-term adjusted AFR 3.45% 3.42% 3.41% 3.40%

December 8, 2025 764 Bulletin No. 2025–50

REV. RUL. 2025-24 TABLE 3 Rates Under Section 382 for December 2025 Adjusted federal long-term rate for the current month 3.45% Long-term tax-exempt rate for ownership changes during the current month (the highest of the adjusted federal 3.58% long-term rates for the current month and the prior two months.)

REV. RUL. 2025-24 TABLE 4 Appropriate Percentages Under Section 42(b)(1) for December 2025 Note: Under section 42(b)(2), the applicable percentage for non-federally subsidized new buildings placed in service after July 30, 2008, shall not be less than 9%. Appropriate percentage for the 70% present value low-income housing credit 7.97% Appropriate percentage for the 30% present value low-income housing credit 3.41%

REV. RUL. 2025-24 TABLE 5 Rate Under Section 7520 for December 2025 Applicable federal rate for determining the present value of an annuity, an interest for life or a term of years, or a remainder or reversionary interest

4.60%

Section 42.—Low-Income Housing Credit