TSP Rollover to IRA: Should You Stay in TSP or Roll Over After Federal Retirement?

The stay-vs-roll decision is one of the most consequential choices federal employees make at separation — and it's one you largely can't undo. TSP won't accept IRA rollovers back in. Once that money leaves, it's gone from the federal system permanently.

Why this decision is different from a typical 401(k) rollover

Most private-sector employees automatically roll their 401(k) to an IRA when they leave a job. The advice almost always applies: more flexibility, more investment options, easier management.

The TSP is not a typical 401(k). It has three features that create real, measurable value that you lose at rollover:

• The G Fund — a government-backed bond fund that doesn't exist anywhere else
• The Rule of 55 — penalty-free access at 55 (or 50 for special-category employees) that disappears the moment you roll to an IRA
• Ultra-low fees that rival anything in the mutual fund marketplace

At the same time, the TSP has real limitations. Some of those limitations were reduced in January 2026 when TSP launched in-plan Roth conversions — changing the calculus compared to advice you may have read even a year ago.

Five reasons to stay in TSP

1. The G Fund: a unique, principal-protected bond fund

The G Fund invests in short-term U.S. Treasury securities specially issued to the TSP. Its rate is recalculated monthly by the Treasury Department as the weighted average yield of approximately 202 marketable Treasury securities — meaning it returns roughly what intermediate-term Treasuries yield without any of the price volatility that comes with actually holding bonds in a fund.

In a rising-rate environment, a standard bond fund falls in value. The G Fund doesn't. In a falling-rate environment, it still earns the current Treasury yield without locking you into a lower rate. You get the yield without the duration risk.

You cannot replicate this in an IRA. Money market funds approximate it, but they pay less. Short-term Treasury ETFs approximate it, but they carry price risk. The G Fund is genuinely irreplaceable for federal retirees who want principal-protected yield.

Check the current G Fund rate at tsp.gov/funds-individual/g-fund/.

2. Rule of 55: penalty-free access before age 59½

If you separate from federal service in the calendar year you turn 55 or later — whether through voluntary retirement, optional retirement, or separation — you can withdraw from your TSP immediately with no 10% early withdrawal penalty.¹

IRAs don't have an equivalent rule. Early IRA withdrawals before 59½ require you to set up a 72(t) Substantially Equal Periodic Payment (SEPP) arrangement, which locks you into a fixed annual withdrawal for 5 years or until age 59½ — whichever is longer. Miss a payment or modify the amount, and the IRS retroactively applies the 10% penalty on every withdrawal you've taken.

The Rule of 55 imposes no such constraint. You can withdraw any amount, in any year, without penalty — as long as the money is still in your TSP (not an IRA) and you separated in the year you were 55 or older.

Critical warning: The Rule of 55 applies to money in your TSP, not money you've rolled to an IRA. If you roll your TSP to an IRA before age 59½, you permanently lose this protection on that money. The IRA treats those funds like any other IRA assets — subject to the 10% penalty until 59½.

3. Ultra-low fees

TSP's net administrative expense ratio is approximately 0.034% per year — about $3.40 per $10,000 invested.² The total expense ratio for equity funds (C, S, I) is slightly higher after adding investment expenses, but still in the 0.035–0.042% range.

Vanguard index funds offer comparable fees (0.03–0.04% for flagship funds). Schwab and Fidelity zero-expense funds exist. So fees alone aren't a reason to stay in TSP — you can match them in an IRA.

But fees are also not a reason to leave. If your current IRA custodian charges 0.5% advisory fees plus 0.1% fund expenses, you're paying 14× the TSP's cost on the same assets. Over 20 years on a $1M balance, that difference compounds to a six-figure gap.

4. New in 2026: in-plan Roth conversion

Starting January 28, 2026, TSP participants can convert traditional TSP balances to Roth within the TSP — no rollover required.³

This was the most cited reason to roll to an IRA before 2026. For years, the conventional advice was: "roll your TSP to a traditional IRA, then convert to Roth at whatever rate you want, each year." That logic now has direct TSP competition.

Key details of TSP in-plan Roth conversion:

• Eligible participants need at least $500 in vested traditional balance
• A minimum $500 "leave-behind" amount must remain in each non-Roth payroll account source after conversion
• Maximum 26 conversions per account per calendar year
• Conversions are irrevocable — they cannot be reversed once processed
• The converted amount is taxable income in the year of conversion (same as IRA)

One practical advantage of IRA Roth conversions over TSP in-plan conversions: IRAs let you pull from the same traditional account to pay the tax bill separately (if you have non-IRA assets). The mechanism is otherwise similar.

5. Roth TSP has no required minimum distributions

Under SECURE 2.0 § 325, Roth balances in employer plans (including the Roth TSP) are no longer subject to lifetime required minimum distributions, starting in 2024.⁴ This puts Roth TSP on equal footing with Roth IRA for RMD purposes.

Traditional TSP balances are still subject to RMDs at age 73 (for those born 1951–1959) or 75 (for those born 1960 or later).

Three reasons to roll to an IRA

1. Investment flexibility

TSP offers five core funds (G, F, C, S, I) and a lineup of Lifecycle funds. That's it. You can't hold individual stocks, REITs, small-cap value tilts, international small-cap, or alternative asset classes. You can't use a direct indexing account. You can't implement factor-based investing strategies.

For many federal employees, the TSP's simplicity is a feature, not a bug. A three-fund-equivalent portfolio using C, S, and I is a perfectly respectable equity allocation. But if you have a reason to want more control over your asset mix, the IRA wins.

2. Beneficiary and estate planning flexibility

TSP beneficiary rules are more restrictive than IRA rules. The TSP pays out to designated beneficiaries, but options for spousal rollovers, trust designations, and the post-death treatment of inherited balances are more limited than what's possible in an IRA.

If your estate plan uses trusts, or if you have a non-spouse beneficiary situation that requires careful structuring of inherited account distributions, an IRA gives your estate attorney more tools to work with. Get that advice in writing before assuming the IRA is better for your specific situation — the 10-year rule for non-spouse inherited IRAs (per T.D. 10001) is its own planning challenge.

3. Consolidated management with a fee-only advisor

If you work with a fee-only advisor who actively manages your investment portfolio, having your retirement assets split between a TSP account (directly with the government) and an IRA (at a custodian your advisor accesses) creates friction. The advisor typically can't trade the TSP on your behalf. You'd be managing two accounts under two frameworks.

If you have $1.2M in TSP and $400K in a rollover IRA, and your advisor actively rebalances and tax-loss harvests, consolidating into the IRA gives them the full picture and full control. That may be worth more than the G Fund or fee savings.

The partial rollover: best of both worlds

You don't have to choose all-or-nothing. You can roll a portion of your TSP to an IRA and keep the rest in TSP.

A common structure for federal retirees who separate before 59½:

• Keep in TSP: The amount you need for penalty-free income between retirement and 59½ (Rule of 55 coverage), plus any G Fund allocation you want to preserve.
• Roll to IRA: The balance above that amount — the portion you'll use for long-term growth, Roth conversions, or advisor management, and won't need to touch until after 59½.

This structure preserves the Rule of 55 protection on what you might actually use before 59½, while giving the IRA's flexibility to the portion that can wait.

Special-category federal employees: Rule of 50

Law enforcement officers (LEOs), federal firefighters, and air traffic controllers qualify for an earlier penalty-free withdrawal threshold. If you separate from service in the calendar year you turn 50 or later, you can withdraw from TSP penalty-free.¹

SECURE 2.0 extended this further: qualified public safety employees with at least 25 years of federal service may access TSP penalty-free at any age, regardless of when they separate.

If you're in a special category and retire at 50 or 51, the Rule of 50 is an especially strong reason to keep money in TSP — a 9-year head start over the 59½ IRA threshold, with no SEPP constraints.

The rollover trap: what you can't undo

TSP does not accept incoming rollovers from IRAs. Once you move money from TSP to a traditional IRA, you cannot move it back into TSP. This is not a clerical limitation — it's the law.

You can roll money from a current employer's qualified plan into TSP. But if you've already separated from federal service, that's not an option.

The irreversibility means the rollover decision should be made with a plan — not made reflexively at retirement because "that's what people do." If there's any chance you'll retire before 59½ and need income, leaving the relevant portion in TSP first is the lower-regret path. You can always roll later (after 59½, Rule of 55 no longer matters). You can never roll back.

How to execute a TSP direct rollover

If you decide to roll some or all of your TSP to an IRA, use a direct rollover:

1. Open a traditional IRA at your chosen custodian (Fidelity, Schwab, Vanguard, or your advisor's custodian).
2. Log into My Account at tsp.gov and initiate a full or partial withdrawal, selecting the "direct rollover to IRA" option.
3. TSP will send the funds directly to the custodian. No check made out to you. No 20% withholding.

Avoid an indirect rollover. If TSP sends a check payable to you, they withhold 20% for taxes. You then have 60 days to deposit the full pre-withholding amount into the IRA — including the 20% you haven't received yet. If you come up short, the gap is treated as a taxable distribution. The 20% is later reconciled on your tax return, but the cash-flow problem is real.

With a direct rollover, there's no withholding, no 60-day clock, and no risk of partial distribution treatment.

Decision framework

What a TSP specialist models here

The decision framework above gives you direction, but the actual numbers depend on inputs that are specific to your situation: your separation age, your FERS pension + supplement income, your tax bracket through your 60s, your state's tax treatment of TSP/IRA distributions, your spouse's income if married, your expected Social Security delay strategy, and your estate planning goals.

A fee-only advisor who works specifically with federal employees builds a multi-year projection that shows:

• How much to keep in TSP vs. roll based on Rule of 55 income needs vs. Roth conversion goals
• Optimal in-plan Roth conversion sizing in TSP vs. IRA rollover + Roth conversion — modeled against IRMAA cliffs ($212,000 MAGI for married filers in 2026⁵)
• Impact of G Fund allocation on portfolio stability vs. opportunity cost in equity growth years
• Beneficiary coordination between FERS survivor annuity, TSP, and any IRA accounts
• State tax impact: some states exempt federal pension income but tax IRA distributions differently

These decisions interact. The Roth conversion timing affects IRMAA tiers, which affect Medicare premiums, which affect the real value of SS delay. A specialist runs it as one integrated plan.

1. TSP Rule of 55 (separation at age 55+) and Rule of 50 for special-category employees: TSP Bulletin 15-4 — Public Safety Employees' Early Withdrawal Exemption; FedWeek — Early Access: Legally Avoiding Penalties on TSP Money. SECURE 2.0 further extended the Rule of 50 for qualifying public safety employees with 25+ years of service.
2. TSP 2025 net administrative expense ratio ~0.034% per fund: TSP.gov — Expenses and Fees. 2026 ratios were not yet published at time of writing; ratios have been stable year-over-year.
3. TSP in-plan Roth conversion launched January 28, 2026: TSP Bulletin 25-4 — Launch of Roth In-Plan Conversion Feature. Key limits: ≥$500 eligible vested balance, ≥$500 leave-behind per non-Roth source, max 26 conversions/year, irrevocable once processed.
4. SECURE 2.0 § 325 — elimination of Roth employer plan lifetime RMDs starting 2024; § 107 — RMD age 73 for born 1951–1959 / 75 for born 1960+: SECURE 2.0 Act of 2022, Pub. L. 117-328.
5. 2026 IRMAA first tier ($212,000 MAGI married filing jointly): Medicare.gov — Part B costs.
6. 2026 TSP contribution limits — elective deferral $24,500; catch-up (50–59, 64+) $8,000; super catch-up (60–63) $11,250; mandatory Roth catch-up for prior-year earnings >$150,000: TSP Bulletin 25-3 — 2026 Contribution Limits.

Values verified as of April 2026. TSP expense ratios, G Fund rates, and IRMAA thresholds update annually; confirm specifics at tsp.gov and medicare.gov for the year you retire.