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Required Interest Rate Assumption for Determining Variable-Rate Premium for Single-Employer Plans; 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 November 2006. The interest assumptions for performing multiemployer plan valuations following mass withdrawal under part 4281 apply to valuation dates occurring in December 2006.

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Catherine B. Klion, Manager, Regulatory and Policy Division, 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 Protection Act of 2006, for premium payment years beginning in 2006 or 2007, 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 (the “premium payment year”). Thus, the required interest rate to be used in determining variable-rate premiums for premium payment years beginning in November 2006 is 5.05 percent (i.e., 85 percent of the 5.94 percent composite corporate bond rate for October 2006 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 December 2005 and November 2006.

For premium payment years beginning in:The required interest rate is:
December 20054.91
January 20064.86
February 20064.80
March 20064.87
April 20065.01
May 20065.25
June 20065.35
July 20065.36
August 20065.36
September 20065.19
October 20065.06
November 20065.05

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 December 2006 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 8th day of November 2006.

Vincent K. Snowbarger,

Interim Director, Pension Benefit Guaranty Corporation.

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[FR Doc. E6-19259 Filed 11-14-06; 8:45 am]