# 2026-13124: PBGC Tweaks Pension Math for Plan Terminations

2026-13124, Allocation of Assets in Single-Employer Plans; Interest Assumptions for Valuing Benefits, is a Federal Register rule from Pension Benefit Guaranty Corporation published 2026-06-30, effective 2026-07-31; PRIA reads it as touching household money (as of 2026-07-07).

- Canonical: https://policyrisk.com/federal-register/2026-13124
- As of: 2026-07-07
- Plain-text twin of the page above; the HTML and this file carry the same facts.

## Facts
- Document number: 2026-13124
- Title: Allocation of Assets in Single-Employer Plans; Interest Assumptions for Valuing Benefits
- Type: Rule
- Agencies: Pension Benefit Guaranty Corporation
- Citation: 91 FR 39463
- Published: 2026-06-30
- Effective: 2026-07-31
- Comments close: not stated
- Significant: no
- Touches household money: yes
- Regulation identifier numbers: none
- Last updated: 2026-07-07

## In one line

PBGC Tweaks Pension Math for Plan Terminations

## Summary

Starting July 31, 2026, the Pension Benefit Guaranty Corporation (PBGC) is updating how it calculates interest rates used to value benefits in single-employer pension plans that are ending. This change affects plan sponsors and employers involved in these plans, helping make sure benefit values match current market conditions. If you’re involved with these plans, get ready for new numbers that could impact how much money is set aside or owed.

## Abstract

This final rule amends the Pension Benefit Guaranty Corporation's regulation on Allocation of Assets in Single-Employer Plans to prescribe the spreads component of the interest assumption under the asset allocation regulation for plans with valuation dates of July 31, 2026-October 30, 2026. These interest assumptions are used for valuing benefits under terminating single-employer plans and for other purposes.

## Effects PRIA read

- Interest assumptions updated for terminations: mixed, medium. Starting July 31, 2026, PBGC changes the spreads component of the interest assumption used to value benefits in terminating single-employer pension plans for valuation dates July 31, 2026 through October 30, 2026. If you are a plan sponsor or employer involved with a terminating single-employer pla…
- Assumptions required for other plan valuations: mixed, medium. PBGC's specified interest assumption spreads (the 4044 yield curve spreads) are used beyond terminations: they are used to determine withdrawn employers' reallocation liability under multiemployer mass withdrawals (parts 4219 and 4281), and multiemployer plans that receive special financial assista…
- Third-quarter 2026 spreads published: benefit, low. The rule publishes the third-quarter 2026 spreads used to build the 4044 yield curve for maturity points from 0.5 to 30.0 years; for example, the third-quarter 2026 spread at the 0.5-year point is 0.71 percent and at the 30.0-year point is -0.11 percent. PBGC also notes the 4044 yield curve is post…

## Related documents

- [2026-21189](https://policyrisk.com/federal-register/2026-21189): Proposed Submission of Information Collection for OMB Review; Comment Request; Special Financial Assistance Information, 2026-10-16
- [2026-21019](https://policyrisk.com/federal-register/2026-21019): Allocation of Assets in Single-Employer Plans; Interest Assumptions for Valuing Benefits, 2026-10-14
- [2026-14627](https://policyrisk.com/federal-register/2026-14627): Penalties for Failure To Provide Certain Notices or Other Material Information, 2026-07-21
- [2026-13639](https://policyrisk.com/federal-register/2026-13639): Improvements to Rules on Recoupment of Benefit Overpayments, 2026-07-06
- [2026-12648](https://policyrisk.com/federal-register/2026-12648): Submission of Information Collections for OMB Review; Comment Request; Direct Express Enrollment Form, 2026-06-24
- [2026-12100](https://policyrisk.com/federal-register/2026-12100): Technical Amendments: Special Financial Assistance, 2026-06-16

## Sources
- [2026-13124 on federalregister.gov](https://www.federalregister.gov/documents/2026/06/30/2026-13124/allocation-of-assets-in-single-employer-plans-interest-assumptions-for-valuing-benefits)
- [2026-13124 as published (PDF)](https://www.govinfo.gov/content/pkg/FR-2026-06-30/pdf/2026-13124.pdf)

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Source: PRIA, https://policyrisk.com/federal-register/2026-13124 (as of 2026-07-07).