Military 401k Withdrawal: Rules, Taxes, and TSP Options

Military TSP withdrawal rules turn on three questions: are you still serving, how old are you, and which pot of money are you pulling from? Active-duty members have narrow options, mainly age-based withdrawals at 59½ and hardship distributions. Anyone who separates gains full access, but the tax treatment and the 10% early withdrawal penalty depend on your age at separation and whether the money is traditional, Roth, or contributed from tax-exempt combat zone pay.

When You Can Access Your TSP

While you’re still in uniform, the Thrift Savings Plan holds your money tight. You have three ways in: an age-based in-service withdrawal once you turn 59½, a financial hardship withdrawal if you meet the criteria, or, for reservists and Guard members, a qualified distribution during a long activation. Everything else waits until you separate.

One thing to check before withdrawing anything: what’s actually vested. Under the Blended Retirement System, the Department of Defense’s automatic 1% contribution vests only after two years of service, so leaving earlier means forfeiting it. Your own contributions and any service matching above the automatic 1% are yours from day one.¹

Age 59½ In-Service Withdrawals

Once you hit 59½, you can take money from your TSP while still on active duty without triggering the 10% early withdrawal penalty that normally applies to retirement plan distributions before that age.² You can take up to four of these withdrawals per calendar year, and each one must be at least $1,000, or your entire vested balance if it’s under $1,000.³ The TSP withholds 20% of the taxable portion for federal income taxes at payment.⁴

Older guidance you may still see online describes these as one-time withdrawals. That was the rule before the TSP Modernization Act took effect in September 2019; multiple age-based in-service withdrawals per year are now allowed.

The Rule of 55

If you separate from the military during or after the calendar year you turn 55, you can withdraw from your TSP without the 10% early withdrawal penalty even though you haven’t reached 59½.² Special category employees like law enforcement officers and firefighters get this exception at age 50.

The protection is tied to the TSP itself. Roll the balance into an IRA before you reach 59½ and you lose it; any IRA withdrawal before 59½ would then face the penalty. If you’re between 55 and 59½ and might need the money, leaving it in the TSP is usually the better call.

Separate before the year you turn 55 and any withdrawal before 59½ generally faces both income tax and the 10% penalty unless another exception applies.⁵

Qualified Reservist Distributions

Reservists and National Guard members called to active duty for more than 179 days, or for an indefinite period, can withdraw from their TSP without the 10% penalty regardless of age. The exception sits in 26 U.S.C. § 72(t)(2)(G), and the distribution has to be taken during the active duty period.⁶

Income tax still applies to traditional balances, but skipping the 10% penalty on top matters. The law also gives you a two-year window after your active duty ends to repay some or all of the distribution into an IRA, and those repayments don’t count against normal IRA contribution limits.⁶

Financial Hardship Withdrawals

Active-duty members under serious financial pressure can request a hardship in-service withdrawal. The TSP recognizes two grounds: negative monthly cash flow, where your expenses exceed your income, and extraordinary expenses.⁷ Extraordinary expenses include unpaid medical costs for you, your spouse, or dependents not covered by insurance; property casualty losses not reimbursed by insurance; and unpaid attorney fees and court costs from a separation or divorce.

The withdrawal has to be at least $1,000, and it can only come from your own contributions and their earnings, not from government matching.³ Federal withholding on hardship distributions is 10% rather than the 20% that applies to most other distribution types.⁴ The 10% early withdrawal penalty still applies if you’re under 59½, and depending on your bracket, the 10% withheld may not cover your actual tax bill.

Since the TSP Modernization Act, taking a hardship withdrawal no longer suspends your contributions for six months. Payroll deductions and any government matching continue. You do have to wait six months after a hardship withdrawal before requesting another.

SECURE 2.0 Emergency Expense Distributions

Starting in 2024, the SECURE 2.0 Act created a separate category for emergency personal expense distributions. If adopted by the plan, this allows up to $1,000 per calendar year for an unforeseeable or immediate financial need without the 10% penalty. The $1,000 cap is not indexed for inflation. You can repay the distribution within three years; if you don’t, you can’t take another emergency distribution from that plan until you’ve either repaid it or contributed enough new money to replace it.⁸ Confirm through the TSP or a service financial counselor whether this specific provision has been adopted.

Options After You Separate

Once you leave the military, for any reason, your full balance opens up. The TSP offers four basic distribution methods:

Partial withdrawals of a specific dollar amount, with the rest left invested.
A total withdrawal of your entire balance in a single payment.
Installment payments monthly, quarterly, or annually, either as a fixed amount or based on life expectancy.
A life annuity purchased through the TSP’s provider, converting your balance into guaranteed lifetime payments.

You can mix these. A partial withdrawal to cover moving and job-search expenses, with monthly installments from the remainder, is a common pattern. Mandatory 20% federal withholding applies to lump sums and to installment payments expected to last fewer than 10 years. Longer installment streams are withheld at a rate calculated as if you were single with zero exemptions, and you can adjust that.⁴

Rolling Over to an IRA

You can roll a TSP balance into an IRA or another employer’s retirement plan. A direct trustee-to-trustee rollover avoids the 20% withholding. If you receive the funds first and roll them over within 60 days, the TSP withholds 20% up front; you’d have to make up that 20% from other funds to roll the full amount and claim the withheld portion back at tax time.⁴ And again: if you’re between 55 and 59½, rolling to an IRA gives up the Rule of 55 access you had inside the TSP.

TSP Loans Before You Withdraw

A loan against your TSP keeps the balance largely intact because you repay yourself with interest. There are two loan types.⁹ A general purpose loan needs no documentation, runs 1 to 5 years, and carries a $50 fee. A primary residence loan must go toward buying or building a primary home, not refinancing or renovations; it requires documentation, runs 61 to 180 months, and carries a $100 fee. The interest rate is the G Fund rate at application, and repayment comes through payroll deductions while you’re on active duty.

The trap comes at separation. If you leave with a loan outstanding, you have 90 days to pay it off or set up repayments by check or direct debit.¹⁰ Miss the window and the TSP forecloses the loan; the IRS then treats the unpaid balance plus accrued interest as taxable income, and if you’re under 59½, the 10% penalty applies on top.⁹ A separated participant can’t repay a foreclosed loan, so temporary borrowing turns into a permanent, penalized distribution.

How Your Withdrawal Is Taxed

The tax outcome depends on which bucket the money comes from.

Traditional TSP

Traditional balance withdrawals are ordinary income in the year received. You got a break going in, so the IRS collects going out. The 20% withholding is a down payment on the actual bill, which depends on your total income for the year. Members who separate mid-year often land in a lower bracket, so timing matters.

Roth TSP

Roth contributions went in after tax, so the contributions always come out tax-free. The earnings on those contributions are tax-free too, but only if the distribution is qualified: five years must have passed since January 1 of the year you made your first Roth TSP contribution, and you must be at least 59½, permanently disabled, or deceased.¹¹ Fail either condition and the earnings portion is taxed as income and may face the 10% penalty.

Combat Zone Tax-Exempt Contributions

Contributions made from tax-exempt combat zone pay get an unusually good deal. The pay wasn’t taxed going in, and those contributions aren’t taxed coming out. Roth contributions from combat zone pay, along with qualified earnings on them, come out entirely tax-free. Traditional contributions from tax-exempt pay avoid double taxation because the TSP tracks the tax-exempt portion separately. If you maxed contributions during a deployment, that money is some of the most tax-efficient retirement savings you’ll ever have.

Required Minimum Distributions

You can’t leave the balance in forever. Once you’ve separated and reached the applicable age, the IRS requires annual minimum distributions.¹² If you were born before 1960, RMDs begin at 73. If you were born in 1960 or later, RMDs begin at 75. Your first RMD is due by April 1 of the year after you both reach the applicable age and have left federal service. Still in uniform at 75? RMDs wait until you separate. Missing an RMD carries a steep IRS penalty, and the TSP will only reach you at the address it has, so keep your contact information current.

Requesting a Withdrawal

Withdrawals now go through the TSP’s online system. The paper forms many military finance guides still reference, including TSP-75, TSP-76, and TSP-99, are obsolete for most participants.¹³¹⁴

Log in to My Account on tsp.gov and go to the withdrawals section. The system walks you through the steps, catches errors as you go, and lets you upload any documentation needed. Requests entered before noon Eastern time process that same business night; requests after noon process the next business night, with direct deposits reaching bank accounts within a few business days after that.¹⁵ Paper forms are available only in extenuating circumstances through the ThriftLine.

Spouse Consent

Married uniformed services participants need spouse consent to withdraw.¹⁶ For post-separation withdrawals, a spouse has a right to a joint and survivor annuity with a 50% survivor benefit, and they must sign a waiver for any other distribution method.¹⁷ The consent has to be signed and notarized, and it applies even if you’re legally separated. Skipping it is one of the fastest ways to have a withdrawal request bounced back.

1
Office of Financial Readiness. BRS Defined Contribution Fact Sheet
2
Internal Revenue Service. Retirement Topics – Exceptions to Tax on Early Distributions
3
Thrift Savings Plan. In-service Withdrawal Types and Terms
4
Thrift Savings Plan. Tax Rules About TSP Payments
5
Thrift Savings Plan. Information for TSP Participants Leaving Federal Employment
6
Office of the Law Revision Counsel. 26 USC 72 – Annuities; Certain Proceeds of Endowment and Life Insurance Contracts
7
Thrift Savings Plan. Worksheet to Determine Financial Hardship
8
Internal Revenue Service. Certain Exceptions to the 10 Percent Additional Tax Under Code Section 72(t)
9
Thrift Savings Plan. TSP Loans
10
TSP.gov. Leaving Uniformed Services
11
Thrift Savings Plan. Traditional and Roth TSP Contributions
12
Thrift Savings Plan. Taking Money From Your Account
13
Thrift Savings Plan. Attention – Obsolete Forms
14
Thrift Savings Plan. Forms and Resources
15
Thrift Savings Plan. Withdrawals in Retirement
16
Thrift Savings Plan. Marriage and Spouse’s Rights
17
eCFR. 5 CFR Part 1650 Subpart G – Spousal Rights