Part III. Administrative, Procedural, and Miscellaneous
Internal Revenue Bulletin 2005-44 · 2026-10-03 edition · updated 2026-10-04 · United States
Weighted Average Interest Rates Update
Notice 2005–71
This notice provides guidance as to the corporate bond weighted average interest rate and the permissible range of interest rates specified under § 412(b)(5)(B)(ii)(II) of the Internal Revenue Code. In addition, it provides guidance as to the interest rate on 30-year Treasury securities under § 417(e)(3)(A)(ii)(II), and the weighted average interest rate and permissible ranges of interest rates based on the 30-year Treasury securities rate.
CORPORATE BOND WEIGHTED AVERAGE INTEREST RATE
Sections 412(b)(5)(B)(ii) and 412(l)(7)(C)(i), as amended by the Pension Funding Equity Act of 2004, provide that the interest rates used to calculate current liability and to determine the required contribution under § 412(l) for plan years beginning in 2004 or 2005 must be within a permissible range based on the weighted average of the rates of interest on amounts invested conservatively in long term investment grade corporate bonds during the 4-year period ending on the last day before the beginning of the plan year.
Notice 2004–34, 2004–1 C.B. 848, provides guidelines for determining the corporate bond weighted average interest rate
Corporate
and the resulting permissible range of interest rates used to calculate current liability. That notice establishes that the corporate bond weighted average is based on the monthly composite corporate bond rate derived from designated corporate bond indices.
The composite corporate bond rate for September 2005 is 5.44 percent. Pursuant to Notice 2004–34, the Service has determined this rate as the average of the monthly yields for the included corporate bond indices for that month.
The following corporate bond weighted average interest rate was determined for plan years beginning in the month shown below.
For Plan Years Bond 90% to 100%
Beginning in: Weighted Permissible Month Year Average Range
October 2005 5.81 5.23 to 5.81
imum amount of the deduction allowed under § 404(a)(1).
The rate of interest on 30-year Treasury securities for September 2005 is 4.47 percent. Pursuant to Notice 2002–26, 2002–1 C.B. 743, the Service has determined this rate as the monthly average of the daily determination of yield on the 30-year Treasury bond maturing in February 2031.
The following 30-year Treasury rates were determined for the plan years beginning in the month shown below.
30-YEAR TREASURY SECURITIES WEIGHTED AVERAGE INTEREST RATE
Section 417(e)(3)(A)(ii)(II) defines the applicable interest rate, which must be used for purposes of determining the minimum present value of a participant’s benefit under § 417(e)(1) and (2), as the annual rate of interest on 30-year Treasury securities for the month before the date of distribution or such other time as the Secretary may by regulations prescribe. Section 1.417(e)–1(d)(3) of the Income
Tax Regulations provides that the applicable interest rate for a month is the annual interest rate on 30-year Treasury securities as specified by the Commissioner for that month in revenue rulings, notices or other guidance published in the Internal Revenue Bulletin.
Section 404(a)(1) of the Code, as amended by the Pension Funding Equity Act of 2004, permits an employer to elect to disregard subclause (II) of § 412(b)(5)(B)(ii) to determine the max
30-Year
For Plan Years Treasury 90% to 105% 90% to 110%
Beginning in: Weighted Permissible Permissible Month Year Average Range Range
October 2005 4.89 4.40 to 5.13 4.40 to 5.38
1–202–283–9703. Mr. Montanaro may be reached at 1–202–283–9714. The telephone numbers in the preceding sentences are not toll-free.
Drafting Information
The principal authors of this notice are Paul Stern and Tony Montanaro of the Employee Plans, Tax Exempt and Government Entities Division. For further information regarding this notice,
please contact the Employee Plans’ taxpayer assistance telephone service at 1–877–829–5500 (a toll-free number), between the hours of 8:00 a.m. and 6:30 p.m. Eastern time, Monday through Friday. Mr. Stern may be reached at
October 31, 2005 863 2005–44 I.R.B.
NOTE: This revenue procedure will be reproduced as the next revision of IRS Publication 1179, General Rules and Specifica-
tions for Substitute Forms 1096, 1098, 1099, 5498, W-2G, and 1042-S .
26 CFR 601.602: Forms and instructions. (Also Part 1, Sections 220, 408, 408A, 529, 530(h), 1441, 6041, 6041A, 6042, 6043, 6044, 6045, 6047, 6049, 6050A, 6050B, 6050D, 6050E, 6050H, 6050J, 6050N, 6050P, 6050Q, 6050R, 6050S, 1.408–5, 1.408–7, 1.408A–7, 1.1441–1 through 1.1441–5, 1.6041–1, 7.6041–1, 1.6042–2, 1.6042–4, 1.6044–2, 1.6044–5, 1.6045–1, 5f.6045–1, 1.6045–2, 1.6045–4, 1.6047–1, 1.6049–4, 1.6049–6, 1.6049–7, 1.6050A–1, 1.6050B–1, 1.6050D–1, 1.6050E–1, 1.6050H–1, 1.6050H–2, 1.6050J–1T, 1.6050N–1, 1.6050P–1.)
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