Thrift Savings Plan (TSP)

In short

A friend of mine worked thirty years for the Postal Service and told me the Thrift Savings Plan was the one part of his paycheck he never had to think about. If you work for the federal government or serve in the uniformed services, you may have access to the same account. The TSP is a retirement savings plan, and it works much like a 401(k) in the private world. Your contributions come out of each paycheck, and the money grows until you take it out later. The yearly contribution limit is set by law, and the current figure is the current figure, which the official source publishes each year. Your agency may add money to your account, so find out what yours offers before you decide how much to put in. Small steps, taken early, tend to matter most here.

The whole of it

What it is

I once sat with a retired park ranger who kept his old account statements in a shoebox. He was proud of that box, and he had every right to be. The Thrift Savings Plan is a retirement savings and investment plan for federal employees and members of the uniformed services. Congress created it, and the Federal Retirement Thrift Investment Board runs it. The plan has its own official website, tsp.gov, where the rules and the current limits are posted.

The plan offers two kinds of contributions. Traditional contributions come out of your pay before tax, so your taxable income drops today. You pay income tax when you withdraw the money later. Roth contributions come out of your pay after tax. You get no tax break now, but qualified withdrawals later are not taxed. Some people split their savings between the two. That choice is yours, and either one is a sound way to save.

How it works

If you are holding a federal pay stub, you have probably seen a line for TSP. You pick a percent of your pay, and the agency sends that amount into your account every pay period. You then choose where the money goes. The plan offers a set of funds, and the official site lists each one along with its fees and past results. The plan also offers lifecycle funds, which shift their mix over time as a chosen retirement date gets closer. Explaining what these funds are is not the same as telling anyone which one to pick, and nobody here is doing that.

Agency contributions come in two parts for employees covered by the Federal Employees Retirement System. The agency adds an automatic amount equal to 1 percent of basic pay, whether or not the employee puts in anything. The agency also matches the employee's own contributions up to a set point. The match is dollar for dollar on the first 3 percent of pay and fifty cents on the dollar for the next 2 percent. So an employee who puts in 5 percent of pay gets the full match. Employees under the older Civil Service Retirement System do not get these agency contributions. Uniformed service members have their own rules, and the branch of service matters.

Money in the plan is meant to stay until retirement. Taking it out early can bring taxes and, in many cases, a penalty. The plan also allows loans and certain hardship withdrawals, and each one has its own paperwork and costs. Read the official booklets before you lean on either one.

The numbers, and where to find yours

You have probably wondered what the real limits are. The yearly cap on your own contributions is the current figure, which the official source publishes each year. Workers who reach a certain age can add extra catch up contributions, and that limit is the current figure, which the official source publishes each year, with the starting age at the current figure, which the official source publishes each year. A separate, higher cap covers all sources together, which is your money plus the agency's. That figure is the current figure, which the official source publishes each year. These numbers change from year to year. Read them from the official page, not from memory or from an old article.

To find your own numbers, look at your latest pay statement or your account on tsp.gov. Your agency's human resources office can tell you which retirement system covers you. That one fact decides whether you get the full agency match. Two minutes with that office can be worth more than an hour of guessing.

Withdrawals follow age rules too. The age after which early withdrawals avoid the extra tax is the current figure, which the official source publishes each year. Required minimum withdrawals begin at 73 for 2024 (source, checked 9/27/2026). Check both on the official page before planning a date.

A worked example

Let me tell you about a woman I will call Maria. She is thirty five and works for a federal agency under FERS. Her salary is $52,000 a year. She decides to put 5 percent of her pay into the plan.

Her own contribution is 5 percent of $52,000, which is $2,600 a year. That works out to about $100 each biweekly paycheck, since $2,600 divided by 26 paychecks is $100.

Now the agency's part. The automatic contribution is 1 percent of $52,000, which is $520. The match is 3 percent of $52,000, which is $1,560, plus half of the next 2 percent. Two percent of $52,000 is $1,040, and half of that is $520. So the match totals $1,560 plus $520, or $2,080.

Add it up. The agency puts in $520 plus $2,080, which is $2,600. Maria puts in $2,600. Her account gets $5,200 in the first year. She paid half of it herself. Free money is a plain way to say it, though the money is really part of her pay package.

Suppose she had put in only 2 percent instead. That is $1,040 a year. The agency would still add its automatic $520, but the match would be 2 percent of $52,000, which is $1,040. Her total would be $1,040 plus $520 plus $1,040, or $2,600. She would leave $1,560 of match money on the table, since the full match needs 5 percent. That is the gap a small bump in her rate would close.

Growth is not promised. The fund prices go up and down, and nobody can tell Maria what her balance will be at sixty two. What she can count is what goes in. Five thousand two hundred dollars a year, every year, is a real thing she controls.

Where it goes wrong

A friend of mine once told me he had skipped the match for six years without knowing it. He just never looked at the form. That is the most common stumble I hear about. Someone signs up, picks a low percent, and never goes back. The match has a ceiling, and falling short of it costs real dollars.

Another stumble is the default. When new employees are enrolled automatically, the plan sets a starting contribution rate and a starting fund. Those defaults are a place to begin, not a plan built for any one person. Check what yours is. Then decide on purpose.

Taking money out early can hurt. A withdrawal before the age set by law may bring income tax plus an extra tax. A loan has to be repaid, and if the borrower leaves federal service with the loan unpaid, the unpaid balance can be treated as a taxable withdrawal. Read the loan terms first.

Leaving federal service raises its own questions. The plan allows a person to leave the money where it is, move it to another account, or take it out. Each path has tax rules. The plan requires forms for each one, and the forms ask for details that are easy to get wrong when rushed.

Then there is tax confusion between Traditional and Roth. A Traditional balance is taxed when it comes out. A Roth balance can come out tax free if the rules are met. Mixing them up on a spreadsheet leads to bad guesses about future income. Keep the two balances separate in your notes.

Fees are small in this plan, but they exist. Look at the expense figures on tsp.gov for each fund. Small numbers add up over thirty years.

Questions to answer before you leave this page

Do you know which retirement system covers you, FERS, CSRS, or the uniformed services? Have you looked at your latest pay statement to see what percent is going into the plan right now? Is that percent high enough to earn the full agency match, or is some of it still waiting on the table? Have you chosen Traditional, Roth, or a mix, and can you say why in one sentence? Do you know which funds hold your money today, and did you pick them or did a default pick them for you? Have you read the fee figures for those funds on the official site? If a day came when you needed cash, do you know what a loan or a hardship withdrawal would cost you? Have you named a beneficiary, and is that name still the right one? And when did you last log in to tsp.gov and read the current limits for yourself?