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Required Interest Rate Assumption for Determining Variable-Rate Premium; Interest Assumptions for Multiemployer Plan Valuations Following Mass Withdrawal

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Pension Benefit Guaranty Corporation.


Notice of interest rates and assumptions.


This notice informs the public of the interest rates and assumptions to be used under certain Pension Benefit Guaranty Corporation regulations. These rates and assumptions are published elsewhere (or can be derived from rates published elsewhere), but are collected and published in this notice for the convenience of the public. Interest rates are also published on the PBGC's Web site (


The required interest rate for determining the variable-rate premium under part 4006 applies to premium payment years beginning in May 2005. The interest assumptions for performing multiemployer plan valuations following mass withdrawal under part 4281 apply to valuation dates occurring in June 2005.

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Catherine B. Klion, Attorney, Legislative and Regulatory Department, Pension Benefit Guaranty Corporation, 1200 K Street, NW., Washington, DC 20005, 202-326-4024. (TTY/TDD users may call the Federal relay service toll-free at 1-800-877-8339 and ask to be connected to 202-326-4024.)

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Variable-Rate Premiums

Section 4006(a)(3)(E)(iii)(II) of the Employee Retirement Income Security Act of 1974 (ERISA) and § 4006.4(b)(1) of the PBGC's regulation on Premium Rates (29 CFR part 4006) prescribe use of an assumed interest rate (the “required interest rate”) in determining a single-employer plan's variable-rate premium. Pursuant to the Pension Funding Equity Act of 2004, for premium payment years beginning in 2004 or 2005, the required interest rate is the “applicable percentage” (currently 85 percent) of the annual rate of interest determined by the Secretary of the Treasury on amounts invested conservatively in long-term investment grade corporate bonds for the month preceding the beginning of the plan year for which premiums are being paid. Thus, the required interest rate to be used in determining variable-rate premiums for premium payment years beginning in May 2005 is 4.72 percent (i.e., 85 percent of the 5.55 percent composite corporate bond rate for April 2005 as determined by the Treasury).

The following table lists the required interest rates to be used in determining variable-rate premiums for premium payment years beginning between June 2004 and May 2005.

For premium payment years beginning in:The required interest rate is:
June 20045.26
July 20045.25
August 20045.10
September 20044.95
October 20044.79
November 20044.73
December 20044.75
January 20054.73
February 20054.66
March 20054.56
April 20054.78
May 20054.72
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Multiemployer Plan Valuations Following Mass Withdrawal

The PBGC's regulation on Duties of Plan Sponsor Following Mass Withdrawal (29 CFR part 4281) prescribes the use of interest assumptions under the PBGC's regulation on Allocation of Assets in Single-Employer Plans (29 CFR part 4044). The interest assumptions applicable to valuation dates in June 2005 under part 4044 are contained in an amendment to part 4044 published elsewhere in today's Federal Register. Tables showing the assumptions applicable to prior periods are codified in appendix B to 29 CFR part 4044.

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Issued in Washington, DC, on this 6th day of May 2005.

Vincent K. Snowbarger,

Deputy Executive Director, Pension Benefit Guaranty Corporation.

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[FR Doc. 05-9549 Filed 5-12-05; 8:45 am]