April 2026 Weighted Average Interest Rates, Yield Curves, and Segment Rates

Part III --- Administrative, Miscellaneous, and Procedural

Update for Weighted Average Interest Rates, Yield Curves, and Segment Rates Notice 2026-26 This notice provides guidance on the corporate bond monthly yield curve, the corresponding spot segment rates used under § 417(e)(3), and the 24-month average segment rates under § 430(h)(2) of the Internal Revenue Code. In addition, this notice provides guidance as to the interest rate on 30-year Treasury securities under § 417(e)(3)(A)(ii)(II) as in effect for plan years beginning before 2008 and the 30-year Treasury weighted average rate under § 431(c)(6)(E)(ii)(I). YIELD CURVE AND SEGMENT RATES Section 430 specifies the minimum funding requirements that apply to single-employer plans (except for CSEC plans under § 414(y)) pursuant to § 412. Section 430(h)(2) specifies the interest rates that must be used to determine a plan's target normal cost and funding target. Under this provision, present value is generally determined using three 24-month average interest rates ("segment rates"), each of which applies to cash flows during specified periods. To the extent provided under § 430(h)(2)(C)(iv), these segment rates are adjusted by the applicable percentage of the 25-year average segment rates for the period ending September 30 of the year preceding the calendar year in which the plan year begins. However, an election may be 1 made under § 430(h)(2)(D)(ii) to use the monthly yield curve in place of the segment rates. Section 1.430(h)(2)-1(d) provides rules for determining the monthly corporate bond yield curve, and § 1.430(h)(2)-1(c) provides rules for determining the 24-month average corporate bond segment rates used to compute the target normal cost and the funding target. Consistent with the methodology specified in § 1.430(h)(2)-1(d), the monthly corporate bond yield curve derived from March 2026 data is in Table 2026-3 at the end of this notice. The spot first, second, and third segment rates for the month of March 2026 are, respectively, 4.24, 5.35, and 6.25. The 24-month average segment rates determined under § 430(h)(2)(C)(i) through (iii) must be adjusted pursuant to § 430(h)(2)(C)(iv) to be within the applicable minimum and maximum percentages of the corresponding 25-year average segment rates. Those percentages are 95% and 105% for plan years beginning in 2025 and 2026. For this purpose, any 25-year average segment rate that is less than 5% is deemed to be 5%. The 25-year average segment rates for plan years beginning in 2025 and 2026 were published in Notice 2024-67, 2024-41 I.R.B. 726 and Notice 2025-47, 2025-40 I.R.B. 441, respectively.

Pursuant to § 433(h)(3)(A), the third segment rate determined under § 430(h)(2)(C) is used to determine 1 the current liability of a CSEC plan (which is used to calculate the minimum amount of the full funding limitation under § 433(c)(7)(C)).

24-MONTH AVERAGE CORPORATE BOND SEGMENT RATES The three 24-month average corporate bond segment rates applicable for April 2026 without adjustment for the 25-year average segment rate limits are as follows: Applicable Month First Segment Second Segment Third Segment April 2026 4.46 5.27 5.84 The adjusted 24-month average segment rates set forth in the chart below reflect § 430(h)(2)(C)(iv) of the Code. The 24-month averages applicable for April 2026, adjusted to be within the applicable minimum and maximum percentages of the corresponding 25-year average segment rates in accordance with § 430(h)(2)(C)(iv), are as follows:

For Plan Years First Second Third

Beginning In Applicable Month Segment Segment Segment 2025 April 2026 4.75 5.27 5.84 2026 April 2026 4.75 5.25 5.84 30-YEAR TREASURY SECURITIES INTEREST RATES Section 431 specifies the minimum funding requirements that apply to multiemployer plans pursuant to § 412. Section 431(c)(6)(B) specifies a minimum amount for the full-funding limitation described in § 431(c)(6)(A), based on the plan's current liability. Section 431(c)(6)(E)(ii)(I) provides that the interest rate used to calculate current liability for this purpose must be no more than 5 percent above and no more than 10 percent below the weighted average of the rates of interest on 30-year Treasury securities during the four-year period ending on the last day before the beginning of the plan year. Notice 88-73, 1988-2 C.B. 383, provides guidelines for determining the weighted average interest rate. The rate of interest on 30-year Treasury securities for March 2026 is 4.85 percent. The Service determined this rate as the average of the daily determinations of yield on the 30-year Treasury bond maturing in February 2056. For plan years beginning in April 2026, the weighted average of the rates of interest on 30-year Treasury securities and the permissible range of rates used to calculate current liability are as follows:

For Plan Years 30-Year Treasury Permissible Range

Beginning In Weighted Average 90% to 105% April 2026 4.47 4.02 to 4.69 Adjusted 24-Month Average Segment Rates

Treasury Weighted Average Rates 24-Month Average Segment Rates Without 25-Year Average Adjustment

MINIMUM PRESENT VALUE SEGMENT RATES In general, the applicable interest rates under § 417(e)(3)(D) are segment rates computed without regard to a 24-month average. Section 1.417(e)-1(d)(3) provides guidelines for determining the minimum present value segment rates. Pursuant to that section, the minimum present value segment rates determined for March 2026 are as follows: March 2026 4.24 5.35 6.25 DRAFTING INFORMATION The principal author of this notice is Tom Morgan of the Office of Associate Chief Counsel (Employee Benefits, Exempt Organizations, and Employment Taxes). However, other personnel from the IRS participated in the development of this guidance. For further information regarding this notice, contact Mr. Morgan at 202-317-6700 or Tony Montanaro at 626-927-1475 (not toll-free calls).

Month First Segment Second Segment Third Segment

Table 2026-3

Monthly Yield Curve for March 2026 Derived from March 2026 Data

Yield Yield Yield Yield Yield Maturity Maturity Maturity Maturity Maturity 3.98 5.92 6.29 6.42 6.49 4.06 5.94 6.29 6.42 6.49 4.59 6.07 6.34 6.45 6.50 4.66 6.08 6.34 6.45 6.51 4.73 6.09 6.34 6.45 6.51 5.36 6.18 6.38 6.47 6.52 5.41 6.19 6.38 6.47 6.52 5.46 6.19 6.38 6.47 6.52 5.81 6.26 6.41 6.48 6.53 5.83 6.27 6.41 6.49 6.53 5.86 6.27 6.42 6.49 6.53 20.5 40.5 60.5 80.5 21.0 41.0 61.0 81.0 26.0 46.0 66.0 86.0 26.5 46.5 66.5 86.5 27.0 47.0 67.0 87.0 12.0 32.0 52.0 72.0 92.0 12.5 32.5 52.5 72.5 92.5 13.0 33.0 53.0 73.0 93.0 18.0 38.0 58.0 78.0 98.0 18.5 38.5 58.5 78.5 98.5 19.0 39.0 59.0 79.0 99.0 0.5 1.0 6.0 6.5 7.0 4.13 5.96 6.30 6.43 6.49 4.19 5.97 6.30 6.43 6.49 4.23 5.99 6.31 6.43 6.50 4.28 6.00 6.31 6.43 6.50 4.32 6.01 6.32 6.44 6.50 4.36 6.03 6.32 6.44 6.50 4.41 6.04 6.32 6.44 6.50 4.47 6.05 6.33 6.44 6.50 4.53 6.06 6.33 6.44 6.50 4.80 6.10 6.35 6.45 6.51 4.87 6.11 6.35 6.45 6.51 4.94 6.12 6.35 6.45 6.51 5.01 6.13 6.36 6.46 6.51 5.07 6.13 6.36 6.46 6.51 5.14 6.14 6.37 6.46 6.51 5.20 6.15 6.37 6.46 6.51 5.25 6.16 6.37 6.46 6.51 5.31 6.17 6.37 6.46 6.52 5.50 6.20 6.39 6.47 6.52 5.55 6.21 6.39 6.47 6.52 5.59 6.22 6.39 6.47 6.52 5.62 6.22 6.40 6.48 6.52 5.66 6.23 6.40 6.48 6.52 5.69 6.24 6.40 6.48 6.52 5.72 6.24 6.40 6.48 6.53 5.75 6.25 6.41 6.48 6.53 5.78 6.25 6.41 6.48 6.53 5.88 6.28 6.42 6.49 6.53 5.90 6.28 6.42 6.49 6.53 100.0 21.5 41.5 61.5 81.5 22.0 42.0 62.0 82.0 22.5 42.5 62.5 82.5 23.0 43.0 63.0 83.0 23.5 43.5 63.5 83.5 24.0 44.0 64.0 84.0 24.5 44.5 64.5 84.5 25.0 45.0 65.0 85.0 25.5 45.5 65.5 85.5 27.5 47.5 67.5 87.5 28.0 48.0 68.0 88.0 28.5 48.5 68.5 88.5 29.0 49.0 69.0 89.0 29.5 49.5 69.5 89.5 10.0 30.0 50.0 70.0 90.0 10.5 30.5 50.5 70.5 90.5 11.0 31.0 51.0 71.0 91.0 11.5 31.5 51.5 71.5 91.5 13.5 33.5 53.5 73.5 93.5 14.0 34.0 54.0 74.0 94.0 14.5 34.5 54.5 74.5 94.5 15.0 35.0 55.0 75.0 95.0 15.5 35.5 55.5 75.5 95.5 16.0 36.0 56.0 76.0 96.0 16.5 36.5 56.5 76.5 96.5 17.0 37.0 57.0 77.0 97.0 17.5 37.5 57.5 77.5 97.5 19.5 39.5 59.5 79.5 99.5 20.0 40.0 60.0 80.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 7.5 8.0 8.5 9.0 9.5