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Thinking About a Partial TSP Withdrawal? Here’s What You Need to Know Before You Jump

Missy E
November 14, 2025

Key Takeaways

A partial TSP withdrawal in 2025 offers flexibility, but it also comes with tax implications, timeline restrictions, and strategic considerations that you need to fully understand before moving forward.
Taking a partial withdrawal without a clear retirement income strategy can lead to unexpected tax bills, loss of growth potential, and difficulty maintaining long-term financial security.

Understanding the Basics of a Partial TSP Withdrawal

A partial withdrawal from your Thrift Savings Plan (TSP) allows you to take out a portion of your account balance without fully cashing out. As of 2025, eligible participants can request multiple partial withdrawals over time. This flexibility sounds appealing, but it also demands careful planning.

You can make a partial withdrawal while you are still employed if you meet specific age criteria or once you have separated from federal service. Generally, you must be at least age 59½ for an in-service withdrawal. If you have separated from service, you can request a partial withdrawal at any age.

However, it’s important to remember that once you begin receiving required minimum distributions (RMDs) at age 73, you must take enough distributions annually to satisfy IRS rules. If you don’t, you could face a significant penalty.

Eligibility Rules You Need to Meet

Before planning your partial withdrawal, make sure you meet the eligibility requirements:

Age 59½ or older for an in-service withdrawal.
Separated from service at any age.
Account balance must be sufficient after withdrawal to keep the TSP account open if you wish to continue investing.

In 2025, you can submit a withdrawal request online through the TSP website or by mailing a paper form. The process is more streamlined compared to previous years.

How Much Can You Withdraw?

There is no minimum dollar amount required for a partial withdrawal, but the TSP mandates that your withdrawal must be at least $1,000 if requested online. If you request by paper, you may have more flexibility.

Keep in mind that your TSP must maintain at least $200 after the withdrawal if you want to keep your account open. If your balance falls below that threshold, the TSP will automatically close your account and distribute the remaining funds.

Key Tax Implications of a Partial Withdrawal

Taxes play a major role in determining whether a partial withdrawal makes sense for you. In 2025:

Traditional TSP funds withdrawn will be subject to federal income taxes.
Roth TSP funds withdrawn will be tax-free if you meet the qualified distribution rules (you must have had the Roth account for at least five years and be age 59½ or older).
Mandatory 20% federal tax withholding applies to most eligible distributions, unless you roll over the amount to another eligible retirement plan.

Also, state income taxes may apply, depending on where you reside.

Partial Withdrawal vs. Full Withdrawal: What’s Better?

Choosing between a partial withdrawal and a full withdrawal depends on your needs and long-term financial strategy. Here are some reasons why you might prefer a partial withdrawal:

You only need a specific sum for a major expense.
You want to maintain your investment growth potential.
You want to defer larger taxable events.
You want to meet your RMD requirements without dismantling your portfolio.

Meanwhile, a full withdrawal might make sense if you are consolidating retirement accounts or simplifying your financial situation, but it also could push you into a higher tax bracket.

How Many Partial Withdrawals Can You Make?

Since rule changes in 2019, TSP participants have been allowed to make multiple partial withdrawals. As of 2025, there is no limit to the number of post-separation partial withdrawals you can take. However, in-service participants are limited to four age-based in-service withdrawals per year.

This flexibility enables you to create a phased retirement income plan rather than taking out lump sums without a structure.

Timing Your Partial Withdrawal Wisely

When you withdraw matters almost as much as how much you withdraw.

Avoid withdrawing too early: If you are under age 59½ and separate from service, taking a partial withdrawal could trigger a 10% early withdrawal penalty unless an exception applies.
Plan around your RMD: Starting at age 73, your TSP account is subject to RMDs. Any withdrawals you take during the year will count toward your RMD. If you don’t withdraw enough, the IRS may impose a 25% penalty on the shortfall.
Mind tax brackets: A large withdrawal in one year could push you into a higher income tax bracket, increasing the tax cost of your TSP income.

Options for Receiving Your Withdrawal

You can select different ways to receive your partial withdrawal:

Single payment to your bank account
Roll over to an IRA or another eligible employer plan
Combination of cash and rollover

Choosing a direct rollover can help you avoid current taxes and maintain tax-deferred growth.

Special Considerations for Roth TSP Withdrawals

If you have both Traditional and Roth balances in your TSP, withdrawals are taken proportionally from each unless you specify otherwise.

For Roth TSP funds to be withdrawn tax-free:

You must be age 59½ or older.
You must have had your Roth TSP for at least five years.

If you don’t meet both criteria, earnings could be taxable, and penalties could apply.

Partial Withdrawals and Retirement Planning

Taking a partial withdrawal is not just a one-time decision; it’s a major move that can impact your:

Income security: Removing too much too soon could jeopardize your future cash flow.
Investment growth: Withdrawing large amounts means losing out on potential future gains.
Healthcare and long-term care planning: You may need those funds later for significant expenses.
Estate planning: Partial withdrawals reduce the balance left to heirs and could have tax implications for them.

It’s essential to consider how each withdrawal fits into your broader retirement strategy.

Costs You Might Not Expect

Several hidden costs can arise if you aren’t careful:

Higher Medicare premiums: Large withdrawals could increase your income and raise your Medicare Part B and Part D premiums.
Social Security taxation: If you’re already receiving Social Security benefits, withdrawals could cause a higher percentage of your benefits to become taxable.
Potential early withdrawal penalties: If you don’t qualify for an exception and you withdraw before age 59½, a 10% penalty could apply.

These costs can erode the value of your TSP assets faster than you anticipate.

Practical Steps Before Requesting a Partial Withdrawal

To make the best decision:

Estimate your tax liability before submitting the request.
Consult a tax professional if you are unsure how the withdrawal will affect your overall tax picture.
Consider a retirement income plan that spreads distributions over multiple years.
Review your beneficiary designations to ensure they reflect your current wishes.
Update your financial plan every year or after major life events.

Staying in Control of Your Retirement Wealth

Managing your TSP carefully after retirement is crucial for sustaining your financial security through your 70s, 80s, and beyond. A partial withdrawal can be a smart strategy if done with clear goals and full awareness of the consequences.

If you’re considering a partial withdrawal or broader distribution strategy, it is strongly recommended to get in touch with a licensed professional listed on this website. A licensed professional can help you develop a customized plan to ensure your decisions today don’t compromise your financial well-being tomorrow.