29 CFR § 4281.13 - Benefit valuation methods—in general.

---
identifier: "/us/cfr/t29/s4281.13"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "29 CFR § 4281.13 - Benefit valuation methods—in general."
title_number: 29
title_name: "Labor"
section_number: "4281.13"
section_name: "Benefit valuation methods—in general."
chapter_name: "PENSION BENEFIT GUARANTY CORPORATION"
subchapter_number: "J"
subchapter_name: "INSOLVENCY, TERMINATION, AND OTHER RULES APPLICABLE TO MULTIEMPLOYER PLANS"
part_number: "4281"
part_name: "DUTIES OF PLAN SPONSOR FOLLOWING MASS WITHDRAWAL"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "29 U.S.C. 1302(b)(3), 1341(a), 1399(c)(1)(D), 1431, and 1441."
regulatory_source: "61 FR 34118, July 1, 1996, unless otherwise noted."
cfr_part: "4281"
---


# 4281.13 Benefit valuation methods—in general.

Except as otherwise provided in § 4281.16 (regarding plans that are closing out), the plan sponsor must value benefits as of the valuation date by—

(a) Using the interest assumptions under § 4044.54 of this chapter;

(b) Using the mortality assumptions under § 4044.53 of this chapter;

(c) Using interpolation methods, where necessary, at least as accurate as linear interpolation;

(d) Applying valuation formulas that accord with generally accepted actuarial principles and practices; and

(e) Adjusting the values to reflect the loading for expenses in accordance with § 4044.52(d) of this chapter.

[61 FR 34118, July 1, 1996, as amended at 63 FR 38307, July 16, 1998; 84 FR 18726, May 2, 2019; 89 FR 48309, June 6, 2024; 90 FR 39329, Aug. 15, 2025]