You can transfer your TSP to a 401k once you’ve separated from federal service, or once you’ve reached age 59½ while still working. The cleanest path is a direct rollover: the Thrift Savings Plan sends your balance straight to your new employer’s plan, no taxes are withheld, and nothing lands in your personal account along the way. A few things have to be squared away first, including any outstanding TSP loan and, for most participants, written spousal consent.
When You’re Eligible to Move the Money
Your employment status is the gate. Separated employees and retirees have the right to withdraw their full balance as a lump sum, a series of payments, an annuity, or any combination of those options, and a lump-sum or partial withdrawal can be rolled directly into a 401k.1Office of the Law Revision Counsel. 5 USC 8433 – Benefits and Election of Benefits This is how most rollovers happen: you leave federal service, and the full balance becomes available.
Still working for the government? Your options are narrower. Active employees can request an age-based withdrawal after turning 59½, and that withdrawal can be rolled into a 401k.1Office of the Law Revision Counsel. 5 USC 8433 – Benefits and Election of Benefits Financial hardship withdrawals are available earlier, but hardship distributions generally cannot be rolled over.2eCFR. 5 CFR 1600.31 – Methods for Rolling Over Eligible Rollover Distribution to the TSP
Clear Any Outstanding TSP Loan First
This is where people get stuck. If you have an unpaid TSP loan when you separate, you can’t request any withdrawal or rollover until that loan is resolved.3Federal Retirement Thrift Investment Board. Withdrawing Your TSP Account After Leaving Federal Service The online system won’t even let you start.
Resolving the loan means one of two things. You repay it in full, or the TSP declares the remaining balance a taxable distribution. After your agency reports your separation, the TSP gives you a short window to repay. Miss that window and the outstanding balance is treated as a distribution, which means income taxes on the full amount plus a potential 10% early withdrawal penalty if you’re under 59½.4Thrift Savings Plan. Changes to Tax Rules About TSP Payments The loan amount itself cannot be rolled into the new 401k.5Thrift Savings Plan. Rollovers From the Thrift Savings Plan to Eligible Retirement Plans If you know you’re leaving, paying the loan off beforehand eliminates the problem.
Spousal Consent
If you’re under the Federal Employees Retirement System (FERS) or you’re a uniformed services member, your spouse must provide written, notarized consent before the TSP processes a withdrawal that would feed a rollover. For a total withdrawal from an account over $3,500, your spouse specifically waives the right to a joint-life survivor annuity. For a partial withdrawal, spousal consent is required regardless of the balance.6Thrift Savings Plan (TSP). Taking Money From Your Account
Under the Civil Service Retirement System (CSRS), the requirement is lighter: the TSP must notify your spouse in writing about your election, but consent isn’t required.7eCFR. 5 CFR Part 1650, Subpart G – Spousal Rights Exceptions exist in either system when a spouse’s whereabouts can’t be determined, and FERS participants can also seek an exception for circumstances like living separately with no financial relationship for three or more years.
Notarization is cheap but takes scheduling. Build the step into your timeline instead of discovering the requirement after you’ve submitted a request.
Confirm Your New 401k Will Accept the Rollover
Before you touch the TSP website, call the receiving plan’s administrator and confirm the plan accepts incoming rollovers. No plan is legally required to accept rollover contributions from another retirement account.8Internal Revenue Service. Rollovers of Retirement Plan and IRA Distributions While you have them on the phone, get the plan’s exact legal name, mailing address, and your new account number. These are the fields the TSP will ask you to enter.
Choose a Direct Rollover
The difference between a direct and indirect rollover isn’t just procedural. It changes how much money actually arrives in your 401k.
In a direct rollover, the TSP sends your money straight to the new plan. Nothing is withheld. You do nothing beyond submitting the request.
In an indirect rollover, the TSP sends the distribution to you. Federal law requires the TSP to withhold 20% of the taxable portion for income taxes before the check reaches you.9Office of the Law Revision Counsel. 26 USC 3405 – Special Rules for Pensions, Annuities You then have 60 days to deposit the full original distribution amount into the new 401k.8Internal Revenue Service. Rollovers of Retirement Plan and IRA Distributions That means fronting the withheld 20% out of pocket. On a $100,000 distribution, you receive $80,000 but have to deposit $100,000 into the 401k inside the 60-day window, putting up $20,000 of your own cash to replace the withholding. You recover the withheld taxes when you file your return, but the cash flow squeeze is real.
Miss the 60-day deadline on any portion and that portion is treated as taxable income, with another 10% early withdrawal penalty on top if you’re under 59½.4Thrift Savings Plan. Changes to Tax Rules About TSP Payments There is almost no reason to pick an indirect rollover when a direct one is available. A direct rollover routes the money from the TSP to your new 401k custodian without the funds ever landing in your bank account.10Legal Information Institute. 26 USC 401a31 – Direct Transfer of Eligible Rollover Distributions
What Can and Can’t Move
Not every dollar in your TSP is eligible, and the type of account matters on the receiving end.
Your traditional TSP balance goes to a traditional 401k to keep its tax-deferred status intact. Roth TSP money can only go to a Roth account within an eligible employer plan or to a Roth IRA.5Thrift Savings Plan. Rollovers From the Thrift Savings Plan to Eligible Retirement Plans You cannot roll Roth TSP funds into a traditional 401k. If your account holds both balances, the TSP distributes them proportionally and processes each portion separately.
Some distribution types can’t be rolled over at all:
- Required minimum distributions once you’ve reached RMD age must come out as income.2eCFR. 5 CFR 1600.31 – Methods for Rolling Over Eligible Rollover Distribution to the TSP
- Financial hardship withdrawals are ineligible for rollover.
- Substantially equal periodic payments elected over your life expectancy or over a period of ten or more years cannot be rolled over.
Uniformed service members who contributed tax-exempt pay from a combat zone have an extra wrinkle. Distributions from those accounts come out proportionally from taxable and nontaxable amounts, and if your new 401k won’t accept tax-exempt balances, the TSP pays that portion directly to you instead of rolling it over.5Thrift Savings Plan. Rollovers From the Thrift Savings Plan to Eligible Retirement Plans Ask the receiving plan about this before you submit.
Submitting the Request
The TSP processes withdrawals and rollovers through the My Account portal at tsp.gov. Paper forms are no longer required for most transactions.11Thrift Savings Plan (TSP). Forms and Resources After logging in, the system walks you through selecting a withdrawal type, entering the receiving plan’s information, and designating the transfer as a direct rollover. In some situations, including when spousal consent documentation is needed, the TSP may require you to print and mail a signed form to the TSP Service Office.
When you specify the transfer, designate it as a direct rollover to an eligible employer plan. That designation is what keeps the money out of your hands and avoids the 20% mandatory withholding.
After the Request Is In
The TSP disburses withdrawal payments each business day, so processing often moves faster than people expect.6Thrift Savings Plan (TSP). Taking Money From Your Account The timeline depends on whether the TSP needs to verify your separation, resolve a loan, or process spousal consent paperwork. A straightforward direct rollover with everything in order tends to move quickly.
Once the distribution is processed, the TSP sends confirmation through your online message center or by mail. Call your new 401k administrator after that to verify the funds arrived and were credited correctly. Rollovers occasionally stall at the receiving end if the plan needs additional documentation or if an account detail doesn’t match.
You Don’t Have to Transfer at All
If your balance is $200 or more, you can leave it in the TSP indefinitely after separating.12Thrift Savings Plan (TSP). Leaving the Federal Government You can’t add new contributions, but you keep access to the TSP’s funds and its low administrative costs. Whether consolidating into the 401k makes sense depends on that plan’s investment options and fees. Some private-sector 401k plans charge expense ratios several times higher than the TSP’s. If the new plan has limited choices or high fees, leaving the balance in the TSP and only contributing new money to the 401k is a reasonable split.