2026-01450Rule

TSP Roth Rule Gets a Wordy Fix-Up Without Fanfare

Published Date: 1/26/2026

Rule

Summary

If you’re in the Thrift Savings Plan (TSP), a tiny fix was made to the new rule letting you switch traditional TSP money to Roth TSP. The correction clears up a wording mix-up about the start date for Roth conversions but doesn’t change how the rule works or affect your money. This update kicks in on January 28, 2026, so get ready to make those Roth moves with confidence!

Analyzed Economic Effects

2 provisions identified: 2 benefits, 0 costs, 0 mixed.

TSP allows traditional-to-Roth conversions

If you are a Thrift Savings Plan (TSP) participant, the rule permits you to convert amounts in your traditional TSP balance to your Roth TSP balance. This permission was part of the final rule published January 15, 2026, and is effective January 28, 2026.

Clarified Roth begin date for dual accounts

A minor correction clarifies wording in the rule: the term 'Roth begin date' replaces 'Roth initiation date.' It also says that if a participant has both a civilian account and a uniformed services account, the Roth begin date for both accounts will be the same. The correction is effective January 28, 2026.

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Key Dates

Published Date
Rule Effective
1/26/2026
1/28/2026

Department and Agencies

Department
Independent Agency
Agency
Federal Retirement Thrift Investment Board
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