TSP Roth Withdrawal Rules: Tax-Free Distributions and the 5-Year Rule

What Makes a Roth TSP Withdrawal Tax-Free

Roth TSP contributions go in after tax — you've already paid income taxes on that money. The payoff is that qualified withdrawals come out completely tax-free: both the contributions you put in and all the earnings that accumulated on top of them.

A withdrawal qualifies for tax-free treatment when two conditions are met:

1. The 5-year rule. At least five years have passed since January 1 of the year you made your first Roth TSP contribution. If you first contributed to the Roth TSP in March 2021, your 5-year clock started January 1, 2021, and the requirement was satisfied on January 1, 2026.

2. Age 59½ or older (or the withdrawal is due to disability or death).

When both conditions are met, every dollar — contributions and earnings — comes out federal-income-tax-free. This is the entire point of paying taxes upfront.

Non-Qualified Withdrawals: What Happens Before You Meet Both Conditions

If you take a Roth TSP withdrawal before satisfying both the 5-year rule and the age requirement, the distribution is non-qualified. The tax treatment gets split:

• Your Roth contributions come out tax-free and penalty-free. You already paid taxes on this money.
• Earnings on those contributions are taxed as ordinary income, and if you're under 59½ (and don't meet an exception like the age-55 separation rule), a 10% early withdrawal penalty applies to the earnings portion.

The TSP calculates the split automatically. It applies a pro-rata formula to determine how much of each distribution is attributable to contributions versus earnings. You'll see the breakdown on Form 1099-R at tax time.

How the TSP Handles Roth Withdrawals Mechanically

When you request a post-separation withdrawal through the My Account portal, the withdrawal wizard asks whether you want to pull from your traditional balance, your Roth balance, or a pro-rata mix of both.

Choosing "Roth first" depletes your Roth balance before touching the traditional side. Choosing "traditional first" does the opposite. Pro-rata pulls proportionally from both.

For most retirees who've satisfied the 5-year rule and are over 59½, taking from the Roth side first means tax-free income — useful when you want to manage your adjusted gross income to stay below Medicare IRMAA thresholds or reduce the taxable portion of your Social Security benefits.

The opposite approach — drawing down traditional first and letting the Roth continue growing tax-free — can make sense if you expect to be in a higher tax bracket later or want to leave the Roth balance to heirs (since inherited Roth accounts also pass tax-free when the original 5-year period has been met).

Roth TSP Is Exempt From Lifetime RMDs

Under SECURE 2.0, Roth TSP balances are completely exempt from required minimum distributions during the original account holder's lifetime. This is a change from prior rules and took effect for tax years beginning in 2024.

Before this change, Roth TSP accounts were subject to the same RMD schedule as traditional TSP accounts — even though Roth IRA accounts had always been exempt. SECURE 2.0 aligned the rules.

What this means in practice: once you reach your RMD age (73 for those born before 1960, 75 for those born 1960 or later), only your traditional TSP balance is used to calculate your required minimum distribution. Your Roth balance can sit untouched, continuing to grow tax-free, for as long as you live.

This makes the Roth TSP one of the most powerful legacy accounts available. Beneficiaries who inherit your Roth TSP will owe no federal income taxes on the distributions, provided the 5-year requirement was met during your lifetime.

Roth TSP vs Roth IRA: Key Differences

The TSP's Roth option and a Roth IRA share the same basic tax treatment, but the mechanical differences matter:

Contribution limits. The 2026 Roth TSP elective deferral limit is $24,500 (plus catch-up contributions if eligible). Roth IRA contributions are limited to $7,000 ($8,000 if 50+), and they phase out at higher income levels. The TSP has no income phase-out.

Withdrawal flexibility. A Roth IRA lets you withdraw contributions at any time, tax-free and penalty-free, with no ordering rules. The Roth TSP applies a pro-rata rule to each distribution, splitting it between contributions and earnings — you can't take "contributions only."

5-year clock. Each Roth IRA conversion has its own 5-year clock for the penalty-free withdrawal of converted amounts before age 59½. The Roth TSP uses a single 5-year clock that starts with your first Roth TSP contribution (or in-plan conversion) and applies to the entire Roth balance.

Loans. Active employees can borrow from their Roth TSP balance. Roth IRAs don't offer loans.

If you want the withdrawal flexibility of a Roth IRA with the contribution capacity of the TSP, some retirees roll their Roth TSP into a Roth IRA after separation. The 5-year clock carries over for the rolled-over amount.

Coordinating Roth and Traditional Withdrawals

The TSP Withdrawal & Drawdown Strategy Guide covers the full post-separation withdrawal sequence — including how to sequence Roth and traditional distributions across the withdrawal wizard, manage IRMAA and tax bracket thresholds, and coordinate with your FERS annuity and Social Security timing.

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