TSP vs IRA Rollover: The $1M Federal Retirement Decision

Last Updated: May 3, 2026 Reading Time: 11 min

The single most expensive financial decision most federal retirees make is whether to roll their TSP to an IRA at retirement. On a $500,000 TSP balance over a 30-year retirement, the fee difference between staying in TSP and rolling to a typical 1% managed IRA compounds to roughly $1,032,000. That is more than most retirees' homes are worth. And in March 2026, a Texas federal court vacated the DOL fiduciary rule, which means the non-fiduciary advisor recommending the rollover is no longer legally required to act in your best interest. This is the math, the law, and the irreversibility traps you should know before you sign anything.

Key Takeaways

• Original FedTools calculation: A $500K TSP rolled to a 1% IRA at 7% gross return loses ~$1,032,000 in fee drag over 30 years.
• The DOL fiduciary rule was vacated by a Texas federal court in March 2026, eliminating the best-interest standard for rollover advice from non-fiduciary advisors.
• The G Fund is statutorily unique (5 USC 8438): 4.5% current yield with U.S. government principal guarantee and zero price risk. No private-sector equivalent.
• Irreversibility is real but partial: Traditional IRA → TSP can roll back via Form TSP-60. Roth TSP → Roth IRA resets the 5-year clock permanently. Rule of 55/50 penalty-free access is permanently lost on rollout.
• Most evidence-consistent strategy: partial rollover. Keep G Fund in TSP, move growth allocation to IRA for flexibility.

The $1 Million Fee Math

Here is the calculation. Source data on tsp.gov, fee assumptions per industry-standard ranges.

30-Year Compound Comparison ($500K starting balance, 7% gross annual return)

Scenario	Annual fee	Net annual return	Balance after 30 years	Fee drag vs TSP
Stay in TSP	0.045%	6.955%	~$3,902,000	baseline
Roll to IRA (1% AUM)	1.0%	6.0%	~$2,870,000	~$1,032,000
Roll to IRA (1.5% w/ alts)	1.5%	5.5%	~$2,484,000	~$1,418,000
Roll to IRA (2.0% w/ PE blend)	2.0%	5.0%	~$2,160,000	~$1,742,000

The 1% AUM scenario is the most common managed-IRA fee structure today. The 1.5% and 2% scenarios reflect the new reality after the DOL safe harbor for alternatives in 401(k) default funds was proposed in March 2026. See our DOL 401(k) Private Equity Rule deep dive for how the alternative-asset fee structures actually work and why TSP's statutory low-fee mandate is a meaningful protection.

You can run your own balance through the TSP Growth & Withdrawal Calculator to see the same compound effect on your specific number.

Why This Is the Question Right Now: DOL Fiduciary Rule Vacated

In March 2026, a Texas federal court vacated the Department of Labor fiduciary rule that had required rollover recommendations to meet a best-interest standard. CNBC and DOL confirmed the ruling. Practical effect:

• Brokers and insurance agents recommending rollovers no longer face a fiduciary duty on that advice.
• The Investment Adviser side (Registered Investment Advisers, the people who hold themselves out as fiduciaries) still owe a fiduciary duty under the Investment Advisers Act of 1940.
• The economic incentive for non-fiduciary advisors to recommend rollovers is unchanged: they earn commissions on IRA assets and earn nothing on TSP assets.

That conflict of interest is no longer hypothetical. FINRA itself warns: "Competition among financial firms for IRA business is strong, with retirement assets often the largest financial assets investors have." If you have a TSP, advisors are incentivized to capture it.

This does not mean every advisor is acting badly. It means you should ask three questions before signing any rollover paperwork. We list them at the end of this post.

The TSP-vs-IRA Decision Matrix

Eight factors determine whether keeping TSP or rolling to an IRA serves you better. The matrix below is FedTools' original synthesis based on the academic and regulatory record. No single source publishes this complete comparison.

Factor	TSP-Stay	IRA-Rollover	Winner
G Fund access	Yes, 4.5% current rate, zero principal risk, no private equivalent	No, must substitute money market (lower yield) or bond fund (duration risk)	TSP-Stay
Fee structure	0.034% to 0.051% across all funds, statutorily mandated low	Highly variable: 0.05% (Vanguard self-directed) to 2%+ (managed/alternative blend)	TSP-Stay for most
Withdrawal flexibility	Proportional withdrawals from all funds (cannot draw exclusively from G Fund)	Full flexibility: withdraw from any specific fund or asset	IRA-Rollover
Rule of 55 (or 50 for LEO/FF/ATC)	Yes, separated employees who turn 55+ in the year of separation can withdraw penalty-free	No, must wait until 59.5 to avoid 10% penalty	TSP-Stay if retiring 55-59
RMD age	73 (rising to 75 in 2033). Roth TSP exempt under SECURE 2.0	73 (Traditional only). Roth IRA exempt during owner's lifetime	Tie for Traditional, IRA-Rollover for Roth flexibility
Creditor protection	Federal bankruptcy + ERISA-equivalent protection	State-by-state variation; federal protection only in bankruptcy	TSP-Stay in litigation-prone professions
Beneficiary options	Spouse can keep as Beneficiary Participant Account; non-spouse rules under SECURE 2.0	Custom beneficiary structures (trusts, see-through trusts, charitable remainder) possible	IRA-Rollover for complex estates
Advisor marketing risk	None, TSP is self-administered government plan	High, especially after DOL fiduciary rule vacated March 2026	TSP-Stay

Score it: 5 factors clearly favor TSP-Stay, 2 favor IRA-Rollover, 1 is a tie. For most federal retirees, TSP-Stay is the better default. The exceptions are real but specific.

The Irreversibility Traps (Read This Carefully)

Generic rollover advice often calls the decision "irreversible." The truth is more specific. Here are the three traps that ARE permanent.

Trap 1: Roth TSP → Roth IRA Resets the 5-Year Clock

The 5-year rule for tax-free Roth distributions starts the clock when you first contributed to that specific Roth account. If your Roth TSP has been open for 10 years and you roll it to a brand-new Roth IRA, the IRS treats it as a brand-new Roth IRA for 5-year-rule purposes. You cannot take qualified (tax-free) distributions for another 5 years.

There is one fix: if you ALREADY have a Roth IRA that has been open for at least 5 years, the rollover lands in that existing account and the existing 5-year clock applies. If you do not have an old Roth IRA, open one with $100 today and let it season. By the time you retire and want to roll Roth TSP, the receiving Roth IRA's 5-year clock will already be satisfied.

Trap 2: The Rule of 55/50 Is Permanently Lost on Rollout

If you separate from federal service in or after the year you turn 55 (or 50 for LEO/FF/ATC), you can take TSP withdrawals without the 10% early withdrawal penalty. IRAs do not have this feature. If you retire at 55 and roll everything to an IRA, you face 4.5 years of penalty exposure on any withdrawal until you reach 59.5. There is no recovery mechanism.

This trap matters most for FERS employees retiring on an MRA+10 separation, LEOs taking early retirement, and DRP/VERA takers under 59.5.

Trap 3: Roth IRA → Roth TSP Is Never Allowed

You can roll a traditional IRA back into TSP via Form TSP-60 (with restrictions). You can NEVER roll a Roth IRA back into a Roth TSP under any circumstances. This is the single most asymmetric rollover rule in the entire retirement system.

Practical implication: if you might want flexibility to move money back into TSP someday, do not Roth-convert IRA assets while they are sitting in the IRA. Convert inside TSP first (TSP allows in-plan Roth conversions starting January 28, 2026), then keep the Roth TSP in TSP.

The Legitimate Case For Rolling Out

The decision is not one-sided. Three legitimate reasons to roll out, partially or fully:

Reason 1: Proportional withdrawal rule. TSP forces proportional withdrawals from all funds simultaneously. If you have 60% C Fund / 30% G Fund / 10% F Fund and request a $1,000 withdrawal, TSP pulls $600 from C / $300 from G / $100 from F. You cannot draw exclusively from G Fund while leaving C/S/I untouched in a market downturn. An IRA lets you sell specific holdings. This is the strongest single argument for rolling out, and the strongest argument for the split strategy described below.

Reason 2: More flexible withdrawal timing. TSP allows monthly installments, fixed dollar amounts, or annuity purchase. IRA allows ad-hoc withdrawals of any amount on any schedule. For retirees who want to fine-tune withdrawals to manage taxable income annually (Roth conversion ladders, tax-bracket smoothing), an IRA is more flexible.

Reason 3: Custom beneficiary structures. TSP beneficiary rules are simpler than IRA beneficiary rules. For complex estates (multiple non-spouse beneficiaries, see-through trusts, charitable remainder trusts), an IRA is more accommodating.

The Split Strategy: Keep G Fund, Move Growth

The strategy most consistent with the academic evidence and the matrix above:

1. Keep your G Fund allocation in TSP. No private-sector equivalent. Statutorily unique. The yield-without-price-risk combination is the single biggest reason to stay.
2. Roll the growth allocation (C/S/I funds) to an IRA at a low-cost custodian (Vanguard, Fidelity, Schwab self-directed; total expense ratio under 0.10%).
3. Keep your Roth TSP in TSP unless you have an existing Roth IRA that has already satisfied the 5-year rule.
4. If you retire at 55-59, keep enough in TSP to fund the bridge years using Rule of 55 penalty-free withdrawals.

This strategy captures the legitimate IRA advantages (withdrawal flexibility, custom beneficiary planning, fund-specific selling during downturns) while preserving the most valuable TSP features (G Fund, statutory low fees, Rule of 55).

Three Questions to Ask Any Advisor Recommending a Rollover

Before signing any rollover paperwork, get clear answers to these three questions in writing:

1. Are you a fiduciary? If the answer is "we act in our clients' best interest," that is not a yes. Press for "yes, in writing, under the Investment Advisers Act of 1940 or by similar binding agreement." Insurance agents and broker-dealer representatives typically are not fiduciaries.
2. What are the TOTAL fees on my IRA, including management fee, fund expenses, and any wrap fees? Get a single number expressed as a percentage of assets, then convert to dollar terms on your specific balance. The 1% AUM in our $1M calculation is the floor, not the ceiling, for many managed-IRA structures.
3. What specific TSP feature am I better off without? If the answer is generic ("more flexibility," "more investment choices"), the advisor has not done the actual analysis. A good rollover recommendation names which TSP feature you are giving up and explains why the IRA replacement is better for your specific situation.

If the answers are no, vague, or evasive, get a second opinion from a fee-only fiduciary (look for NAPFA or XY Planning Network membership). The rollout is largely irreversible. Slow down.

Calculate Your Specific Fee Gap

The $1M figure assumes a $500K balance and 30-year horizon. Your number depends on your specific balance, time horizon, and the fee structure of the IRA you are considering. Use the free FedTools TSP Growth & Withdrawal Calculator to model the same scenario on your own balance.

For broader retirement-readiness context including how TSP balances compare to FERS pension and Social Security, see our State of Federal Retirement Readiness 2026 flagship report and the Best TSP Allocation 2026 playbook.

Run your TSP-vs-IRA fee gap →

Frequently Asked Questions

Should I roll my TSP to my financial advisor's IRA when I retire?

In most cases, no, or at least not all of it. The DOL fiduciary rule that required rollover advice to meet a best-interest standard was vacated by a Texas federal court in March 2026. Non-fiduciary advisors (brokers, insurance agents) earn commissions on IRA assets and earn nothing on TSP assets, which creates a structural conflict of interest. Get the recommendation in writing, ask whether the advisor is a fiduciary, and run the fee math yourself before agreeing.

What is the $1 million figure based on?

An original FedTools calculation: $500,000 TSP balance, 7% gross annual return, 30-year horizon. Staying in TSP at 0.045% expense ratio produces approximately $3.9 million. Rolling to a typical 1% managed IRA produces approximately $2.87 million. The difference is roughly $1,032,000 in foregone wealth, before accounting for the lost G Fund yield advantage or statutory fee protection.

Can I roll IRA money back into TSP if I change my mind?

Sometimes. Traditional IRA assets CAN be rolled back into TSP via Form TSP-60 (only pre-tax money, must be from a traditional IRA). Roth IRA assets cannot be moved back into Roth TSP under any circumstances. The Rule of 55 (or 50 for LEO/FF/ATC) penalty-free access window is permanently lost the moment funds leave TSP.

What's the G Fund equivalent in an IRA?

There is none. The G Fund returns 4.5% currently with U.S. government principal guarantee and zero interest-rate price risk. The combination is statutorily mandated by 5 USC 8438. The closest IRA approximations are short-term Treasury money market funds (typically lower yield) or intermediate Treasury bond funds (carry duration risk that can produce losses). Yield-without-price-risk at G Fund levels is structurally impossible to replicate in any IRA product.

What about the Rule of 55 if I retire at 55?

If you separate from federal service in or after the year you turn 55 (or 50 for LEO/FF/ATC), you can take TSP withdrawals without the 10% early withdrawal penalty. IRAs do not have this feature; you must wait until age 59.5. If you retire at 55 and roll everything to an IRA, you face 4.5 years of penalty exposure on any withdrawal. The Rule of 55 is permanently lost the moment funds leave TSP.

Does the same advice apply to Roth TSP?

Especially. Rolling Roth TSP to a Roth IRA resets the 5-year clock that determines whether qualified distributions are tax-free. If your Roth TSP has been open for 10 years and you roll it to a brand-new Roth IRA, you cannot take qualified distributions for another 5 years. This is the single most expensive Roth TSP rollover mistake.

Can I do a partial rollover?

Yes, and many retirees should. The split strategy keeps your G Fund (or conservative allocation) in TSP for the unique yield-without-risk and the Rule of 55 protection, while rolling growth-oriented assets to an IRA for more flexible withdrawal timing. This is the most evidence-consistent approach. TSP allows partial rollovers and you can repeat them.

What happens to my Roth TSP at age 73 (RMD age)?

Under SECURE 2.0, Roth TSP is no longer subject to RMDs starting in 2024. This is a recent change that significantly improves the case for keeping Roth TSP in place rather than rolling it to a Roth IRA. Traditional TSP RMDs still begin at age 73, rising to 75 in 2033.

Can my spouse roll my TSP to their own account if I die?

Yes. A surviving spouse can either keep the inherited TSP in place as a Beneficiary Participant Account or roll it to their own IRA. Inherited TSP rules are complex and changed under SECURE 2.0; consult an attorney or financial planner before deciding. Non-spouse beneficiaries (children, others) typically face stricter rules and shorter mandatory distribution timelines.

Should I take my advisor's rollover recommendation?

Ask three questions first: Are you a fiduciary in writing? What are the total fees on my IRA, including management fee, fund expenses, and any wrap fees? What specific TSP feature am I better off without? If the answers are no, vague, or evasive, get a second opinion from a fee-only fiduciary (NAPFA or XY Planning Network member). The rollout is largely irreversible. Slow down.

Related Resources

• DOL 401(k) Private Equity Rule: Why TSP Is Exempt By Law: Companion piece on TSP's statutory protection against the alternatives that are being pushed into private-sector retirement plans
• TSP Guide 2026: Pillar guide to the entire TSP system including 2026 contribution limits and withdrawal options
• State of Federal Retirement Readiness 2026: The full picture on TSP balances, FERS adequacy, and retirement readiness benchmarks
• Best TSP Allocation 2026: TSP fund allocation playbook by age and risk tolerance
• TSP Growth & Withdrawal Calculator: Model your specific balance against the fee scenarios in this post

Sources: TSP.gov Withdrawals in Retirement · TSP.gov Expenses and Fees · TSP.gov G Fund · TSP.gov Move Money Into the TSP (Form TSP-60) · FINRA: Thinking About Rolling Over Funds From Your TSP? · CNBC: Retirement Saver Fiduciary Rule Has Died (March 2026) · Federal News Network: 3 Things You Must Know Before Rolling Your Roth TSP · TSP.gov SECURE 2.0 and the TSP · eCFR Part 1650: TSP Withdrawal Methods