If you’re a FERS employee, contributing more to your Thrift Savings Plan is generally a good thing. But there’s a difference between maximizing your TSP contributions and maximizing the total amount going into your account.
If you reach your annual TSP contribution limit too early in the year, you could stop receiving agency matching contributions for the remaining pay periods. Here’s how it works.
Why TSP Matching Contributions Can Stop
FERS employees can receive agency matching contributions based on what they contribute each pay period. To receive the maximum agency matching contribution, you generally need to contribute at least 5% of your basic pay each pay period.
The problem comes when you contribute aggressively enough to reach your annual employee contribution limit before the end of the calendar year.
Once you reach that limit, you cannot keep making regular employee contributions for the rest of the year. And because there is no employee contribution for the agency to match on those later pay dates, the matching contributions stop too.
The agency automatic 1% contribution is separate and continues, but the matching opportunity can be lost.
Your TSP Contribution Limit Depends on Your Age
The amount you can contribute in 2026 depends on your age.
- Under 50: $24,500
- Age 50 or older: $32,500, including catch-up contributions
- Ages 60 through 63: $35,750, because of the higher catch-up limit for that age group
These limits apply to your own traditional and Roth TSP contributions. Agency automatic and matching contributions do not count toward those limits.
That means being eligible for catch-up contributions gives you more room to contribute, but it doesn’t mean you can necessarily front-load those contributions without consequences.
If you reach your applicable limit before your final pay date of the year, your employee contributions stop, and so can your matching contributions.
A Simple Example
Suppose a FERS employee contributes enough to reach the applicable annual limit by October.
From that point forward, the employee cannot make additional TSP contributions until the next calendar year. If there are still several pay periods remaining, there are also no employee contributions for the agency to match during those pay periods.
That’s why the goal shouldn’t simply be to reach the annual limit as quickly as possible. The goal is to reach the limit without giving up matching contributions along the way.
The Safer Way to Maximize Your TSP
For most FERS employees, the simplest approach is to spread your contributions across the entire calendar year.
Start with the annual contribution amount you want to reach, then divide it across your expected number of pay periods. Your payroll office can confirm the number of pay periods that apply to you.
The exact calculation can vary depending on your age, salary, contribution target, and whether you’re eligible for catch-up contributions.
The Bottom Line
TSP matching contributions are tied to your employee contributions each pay period. Reaching your annual contribution limit early can therefore create an unexpected problem: you may have maximized your own contributions while leaving some agency matching money behind.
For FERS employees, the better objective is not simply to max out the TSP as early as possible. It’s to contribute enough throughout the year to capture the matching contributions available to you while still reaching your desired annual contribution level.
If you’re unsure how much you should contribute each pay period based on your age, salary, and retirement goals, a Federal Retirement Consultant (FRC®) can help you evaluate your TSP contribution strategy alongside the rest of your federal retirement plan.
