The Thrift Savings Plan is a retirement savings account for federal employees, military members, and some former government workers

The Thrift Savings Plan (TSP) is a retirement investment account run by the federal government specifically for people who work or worked in federal service. It is not a regular savings account—it is a long-term retirement account similar to a 401(k) in the private sector. You contribute money from your paycheck, the account grows through investment options you choose, and you withdraw the money in retirement.

TSP is available to active-duty military, federal civilian employees, members of Congress, and certain former government workers who still have access to their accounts. The account is administered by the Federal Retirement Thrift Investment Board, a separate government agency that handles only TSP accounts.

The main reason people use TSP instead of other retirement accounts is cost. TSP has some of the lowest investment fees in the country—often less than 0.05% per year—because it is run by the government for its own workforce, not for profit.

Key Takeaways

  • TSP is a retirement account for federal employees and military members, not a general savings account for the public.
  • You contribute pre-tax money from your paycheck, and your employer may match a portion of your contributions.
  • You choose how your money is invested among five core funds or target-date funds based on when you plan to retire.
  • You cannot withdraw money before age 59½ without penalties, except in narrow circumstances like separation from federal service or financial hardship.
  • TSP fees are significantly lower than most private retirement accounts because the government runs it as a service to its employees.

How contributions and employer matching work

When you enroll in TSP, you choose a percentage of your paycheck to contribute before taxes are taken out. For federal civilian employees, your agency will match a portion of what you contribute—typically up to 5% of your salary, though the exact match depends on your agency and how long you have worked there.

Military members have a different matching structure. The military Thrift Savings Plan Match (TSP Match) provides an automatic 1% contribution from the Department of Defense, plus matching contributions up to 4% if you contribute that much yourself. This means military members can receive up to 5% total from their branch.

You can change your contribution amount or investment choices at any time through the TSP website or by phone. There is no limit to how many times you adjust these settings during the year.

The five investment options and target-date funds

TSP offers five core investment funds: the Government Securities Investment Fund (G Fund), the Fixed Income Index Investment Fund (F Fund), the Common Stock Index Investment Fund (C Fund), the Small Capitalization Stock Index Investment Fund (S Fund), and the International Stock Index Investment Fund (I Fund). Each fund invests in different types of securities, from government bonds to U.S. stocks to international stocks.

Most TSP participants choose a target-date fund instead of picking individual core funds. A target-date fund automatically adjusts its mix of investments as you get closer to retirement. For example, if you plan to retire in 2050, you would choose the TSP 2050 Fund, which starts with a higher percentage in stocks and gradually shifts to more conservative investments as 2050 approaches.

You can also build your own mix of the five core funds if you want more control. The TSP website includes tools to help you understand the risk and historical performance of each option, though past performance does not may provide future results.

Withdrawal rules and age restrictions

You cannot withdraw money from TSP before age 59½ without paying a 10% early withdrawal penalty on top of income taxes, with a few exceptions. If you separate from federal service at age 55 or older, you can withdraw without the penalty. If you separate at a younger age, you can leave the money in TSP and wait until 59½ to withdraw penalty-free, or you can roll it into an Individual Retirement Account (IRA) and use IRA early withdrawal rules instead.

TSP also allows withdrawals for financial hardship in limited cases—such as medical expenses, mortgage payments to prevent foreclosure, or burial expenses—but you must document the hardship and the withdrawal is still subject to income tax. The 10% penalty may explore depending on your age and reason.

Once you reach age 73, you must begin taking required minimum distributions (RMDs) from your TSP account each year, whether you have retired or not. The amount is calculated based on your age and account balance.

How TSP differs from a regular savings account

A regular savings account at a bank holds money you can access anytime, earns a small amount of interest, and is insured by the FDIC up to $250,000. TSP is the opposite on almost every point: it is designed for money you will not touch for decades, it grows through investment returns that vary year to year, and it is not FDIC-insured because it holds stocks and bonds, not cash deposits.

TSP also has no monthly or annual fees, no minimum balance requirement, and no limit on how much you can contribute (beyond the annual IRS limit, which changes each year). A regular savings account may charge monthly maintenance fees or require a minimum balance.

If you need money for an emergency or short-term goal, a regular savings account or money market account is the right tool. TSP is for retirement income that you will not need for years or decades.

Who cannot use TSP and what to do instead

If you work in the private sector, you cannot open a TSP account. Your employer may offer a 401(k) plan, which works similarly to TSP but is run by your company or a private investment firm. If your employer does not offer a retirement plan, you can open an Individual Retirement Account (IRA) at a bank or investment firm, which has similar tax advantages and investment options to TSP.

Self-employed people and business owners can open a Solo 401(k) or a SEP IRA, both of which allow higher contribution limits than a standard IRA. A financial advisor or tax professional can help you choose the right account type based on your income and business structure.

Frequently Asked Questions

Can I have both a TSP account and an IRA at the same time?

Yes. You can contribute to both a TSP account and a traditional or Roth IRA in the same year, though there are income limits on Roth IRA contributions and tax deductions for traditional IRA contributions if you have a TSP account. A tax professional can help you understand how these limits explore to your situation.

What happens to my TSP if I leave federal service?

Your money stays in the TSP account and continues to grow. You can leave it there, roll it into an IRA, roll it into a new employer's 401(k), or withdraw it (subject to taxes and penalties if you are under 59½). You do not have to decide when ready—you can leave the money in TSP for as long as you want.

Can I borrow money from my TSP account?

Yes, TSP allows loans against your account balance. You can borrow up to 50% of your vested balance or $50,000, whichever is less. The loan has a fixed interest rate and you repay it through payroll deductions. If you leave federal service, you must repay the loan within 90 days or it becomes a taxable withdrawal.

Is my TSP money protected if the government runs out of money?

Your TSP account is separate from the federal government's general budget. The money in your account belongs to you, not the government, and is invested in the funds you choose. It is not at risk if the government faces budget problems.

How do I know if I am may be able to access for TSP?

If you are a federal civilian employee, military member, or member of Congress, you are may be able to access. Some former government workers retain access to their TSP accounts after leaving service. Your human resources office or military personnel office can confirm your may be able to access and help you enroll.