*This is the new format for our blog content, but the voice and source remain the same. The articles will continue to be written from my perspective, Dennis Damp, using the same experience, research, and federal retirement resources you’ve come to expect.
I’ve always believed the best time to catch a mistake is before it costs you money, not after. Every August, I do the same thing: I pull up my old TSP statements from the mid-year point and check the math. It takes ten minutes, and it has saved me — and plenty of readers who’ve written in over the years — from a nasty surprise every December when the last paycheck of the year arrives lighter than expected, or worse, an employer match that got left on the table.
If you haven’t looked at your Thrift Savings Plan contributions since January, now is the moment. We’re past the halfway point of the year, and the math either works in your favor or it doesn’t. I’ve seen too many federal employees discover this problem in November, when there simply isn’t enough time left in the year to fix it. August gives you breathing room. December does not.
Where the 2026 Limits Stand
The elective deferral limit for 2026 is $24,500 for employees under 50. If you’re 50 or older, catch-up contributions bring your total ceiling higher — check your TSP statement for your exact figure, since the catch-up amount is adjusted annually. FERS employees also need to remember that your 5% agency match is calculated per pay period, not as an annual lump sum. That distinction matters more than most people realize, and it’s the root of nearly every mistake I hear about from readers.
It’s also worth remembering that these limits apply to your traditional and Roth TSP contributions combined. If you’re splitting your contributions between the two, or if you switched your allocation partway through the year, the running total on your TSP statement reflects both, not either one individually. Take a moment to confirm you’re reading the combined figure and not accidentally comparing only your traditional contributions against the full-year limit.
The Mid-Year Math That Actually Matters
Take your year-to-date TSP contribution total from your most recent Leave and Earnings Statement (LES) and divide it by the number of pay periods that have passed. Multiply that by the 26 pay periods in the year. If the result lands well short of the annual limit, you have two options:
Increase your per-pay-period contribution now, spreading the adjustment over the remaining pay periods.
Accept that you won’t max out this year, but make sure you’re still contributing enough each pay period to capture the full 5% agency match.
That second point is the one people miss most often. Front-loading contributions to hit the limit early in the year sounds smart, but if you max out your TSP in October, FERS employees can lose match dollars for the remaining pay periods of the year — because the agency only matches what you contribute, and only up to 5% per pay period. I’ve heard from more than one reader over the years who front-loaded contributions with good intentions and unknowingly walked away from thousands in free money. Don’t let that be you.
If you’re someone who likes to front-load contributions to get money into the market earlier in the year, there is a way to do it without losing match dollars: the TSP now offers a “spillover” feature for catch-up contributions that automatically continues your catch-up contributions once you hit the regular elective deferral limit, provided you’re 50 or older and have elected catch-up contributions. For employees under 50, though, there is no such safety net, and the math has to be managed manually every pay period.
A Quick Gut-Check on Your Fund Allocation
While you’re in there checking contribution totals, take thirty seconds to glance at your fund allocation too. A lot of federal employees set their TSP allocation once, early in their career, and never touch it again. If your target retirement date has shifted, or if market movement this year has pushed your allocation away from where you intended it to sit, mid-year is a reasonable checkpoint to rebalance — not a full overhaul, just a look.
This is also a good moment to check whether you’re invested in a Lifecycle (L) Fund that matches your actual retirement timeline, or whether you selected one year ago based on an earlier planned retirement date. The L Funds automatically shift toward more conservative allocations as your target date approaches, so if your retirement date has moved, either earlier or later, your fund selection should move with it.
What This Means If You’re Already Retired
If you’re already retired and drawing down your TSP rather than contributing to it, this same mid-year discipline still applies, just pointed in the other direction. Check your withdrawal rate against your original plan, confirm your required minimum distribution timeline if you’re of the applicable age, and make sure your fund allocation still reflects your risk tolerance as a retiree rather than as an accumulating employee. The habit of a mid-year check doesn’t end at retirement, it just changes what you’re checking for.
The Bottom Line
A mid-year TSP check costs you ten minutes and can be the difference between a full match and money left on the table. Pull your LES, do the simple division, and adjust your per-pay-period contribution if needed. Glance at your fund allocation while you’re at it, and if you’re retired, apply the same discipline to your withdrawal strategy. Your future self — and your TSP balance at retirement — will thank you for the ten minutes you spent today.
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Dennis V. Damp is an author, retired federal manager, business owner, career counselor and veteran. Damp is the author of 28 books, a recognized benefits expert, and a retired federal manager with 35 years’ service. Dennis has been a guest on hundreds of radio talk shows, CNN’s YOUR MONEY and the Lou Dobbs Cable TV shows, lectured at universities and colleges, produced Internet web sites and training videos, and has written hundreds of articles for national magazines and newspapers. His books have been featured in the Wall Street Journal, Washington Post, New York Times and U.S. News & World Report.
Dennis joined the Air Force in 1968 and spent over three years on active duty and an additional seven years with the Air National Guard. He was hired by the Department of Defense (DOD) after leaving active duty and transferred to the Federal Aviation Administration (FAA) in 1975. He spent the remainder of his career in various positions with the FAA. His last position was technical operations manager at the Pittsburgh International Airport’s air traffic control tower.
