If you’re a federal employee over age 50 and you’ve been diligently maxing out your Thrift Savings Plan (TSP) to gear up for retirement, you might want to take a very close look at your most recent pay stubs. Something big changed on January 1, 2026, and for many of you in the United States Postal Service (USPS), the Veterans Administration (VA), or the Department of Defense (DOD), your money might not be going where you thought it was.
For years, the choice between “Traditional” (pre-tax) and “Roth” (after-tax) contributions was entirely up to you. You picked the bucket, and the government filled it. But thanks to a piece of legislation called the SECURE 2.0 Act: specifically Section 603: the IRS has officially taken that choice away for a specific group of high-earning feds.
If you earned more than $150,000 last year, your catch-up contributions are now being forced into the Roth TSP. And the wild part? Most payroll systems switched this over automatically. You might be paying taxes today that you hadn’t planned for.
If you’re feeling a bit blindsided by these changes, don’t worry: you’re not alone. We’re helping feds navigate these tax shifts every day. You can book a benefits review here to see how this impacts your specific retirement timeline.
The $150,000 Cliff: Who Is Actually Affected?
The first thing to understand is that this isn’t a “blanket” rule for every federal employee. It’s based on a specific income threshold. The law looks at your “FICA wages” (specifically what shows up in Box 5 of your W-2 as Medicare wages) from the previous year.
For the 2026 tax year, if your 2025 Medicare wages from the federal government exceeded $150,000, the mandate applies to you.
Who does this hit the hardest?
- GS-13, GS-14, and GS-15 Employees: Especially those in high-locality areas like D.C., San Francisco, or New York.
- Law Enforcement Officers (LEOs): Between base pay, locality, and significant overtime, many LEOs easily clear the $150k mark.
- Medical Professionals at the VA: Surgeons, specialists, and senior administrators.
- Senior Executives (SES): Across all agencies, including the Department of Labor (DOL) and DOD.
If you fall into this category, any “catch-up” dollars you contribute above the standard limit must be Roth. You no longer have the option to put that specific portion into the Traditional, tax-deferred side of your TSP.
Breaking Down the 2026 TSP Limits
To understand why your pay stub looks different, we have to look at the math. For 2026, the IRS has set some specific numbers that every FERS employee needs to know:
- Standard Elective Deferral: $24,500. This is the “regular” amount anyone can contribute. You can still choose to put this into Traditional, Roth, or a mix of both, regardless of how much you earn.
- Standard Catch-Up (Ages 50–59 and 64+): $8,000. If you are in this age bracket, you can put away a total of $32,500.
- The “Super Catch-Up” (Ages 60–63): $11,250. This is a new feature of SECURE 2.0. If you are in that “sweet spot” age range, your total contribution limit jumps to $35,750.
Here is the kicker: If you are over that $150k income threshold, that $8,000 (or $11,250) must be Roth.
If you previously had your catch-up contributions set to “Traditional,” your agency’s payroll system (whether it’s NFC, LiteBlue for the United States Postal Service, or another provider) likely updated your election to Roth automatically to keep you in compliance with the law. This means you are paying taxes on those dollars now, which might decrease your take-home pay more than you expected.
Confused about which bucket your money is landing in? It’s a lot to keep track of while you’re also trying to manage a demanding career. Schedule a quick chat with us and we can help you audit your current contributions.
Why “Roth-Only” Isn’t Necessarily a Bad Thing
At first glance, being forced to pay taxes today feels like a loss. After all, the whole point of the Traditional TSP is to lower your taxable income now so you can pay taxes later (ideally when you’re in a lower bracket).
However, there is a silver lining. By forcing these catch-up contributions into the Roth TSP, the government is essentially “forcing” you to build a tax-free nest egg.
- Tax-Free Growth: Every dollar that goes into the Roth TSP grows tax-free.
- Tax-Free Withdrawals: When you retire from the VA, DOD, or DOL, you can pull that money out without owing the IRS a single penny, provided you meet the 5-year rule and are over 59½.
- Hedge Against Future Tax Hikes: Many experts believe tax rates will be higher in the future. Paying the tax at today’s rates could be a brilliant move in the long run.
How to Check If You’re Affected
You don’t want to wait until you file your taxes in 2027 to realize your withholdings were off. Here is a simple 3-step audit you can do right now:
- Find your 2025 W-2: Look at Box 5 (Medicare wages and tips). If the number is higher than $150,000, you are subject to the Roth catch-up mandate for all of 2026.
- Check your 2026 Pay Stubs: Look at the deductions section. Do you see a line for “TSP Catch-Up Roth”? If you previously only had “TSP Catch-Up Traditional,” and it has moved, the mandate has kicked in.
- Review your Net Pay: If your take-home pay has dipped slightly despite not changing your contribution percentage, it’s likely because those catch-up dollars are no longer lowering your taxable income.
Strategy for Law Enforcement and High-Earners
For our Law Enforcement Officers and those in the Department of Defense, the “Super Catch-Up” for ages 60–63 is a massive opportunity. Being able to squirrel away $11,250 in after-tax dollars during those final high-earning years can create a significant “tax-free” bucket for retirement.
However, you need to coordinate this with your other income. If you’re also collecting a specialized LEO retirement benefit or have significant outside investments, the Roth vs. Traditional balance becomes even more critical.
The goal is to ensure you aren’t overpaying the IRS today while also protecting yourself from a “tax bomb” in retirement. Since everyone’s situation at the United States Postal Service or the VA is different, a one-size-fits-all approach usually doesn’t work.
If you want to make sure you’re maximizing these new 2026 limits without breaking your monthly budget, let’s sit down and look at the numbers together.
What Happens if You Do Nothing?
If you qualify as a “high earner” and you try to insist on making Traditional catch-up contributions, the law is pretty clear: your agency is required to reject those contributions or recharacterize them as Roth. If the payroll system fails to catch it, you could face IRS penalties or a complicated tax correction down the road.
Most federal agencies have spent the last year upgrading their systems to handle this. From the Department of Labor to the DOD, the “switch” is largely automated. But automation doesn’t account for your personal tax strategy.
Final Thoughts: Take Control of Your TSP
The SECURE 2.0 changes are some of the most significant shifts in federal retirement planning we’ve seen in decades. While the “Roth Mandate” might feel like a loss of control, it’s actually an opportunity to diversify your tax liability.
Don’t let your payroll department be the one making your financial decisions. Take a moment this week to log into your TSP account, check your agency’s payroll portal, and ensure your 2026 contributions align with your goals.
Whether you’re a veteran LEO nearing the finish line or a senior leader at the VA or USPS, understanding these nuances is the difference between a comfortable retirement and a stressful one.
Ready to get your retirement plan on the right track? We specialize in helping federal employees make sense of the noise. Book your comprehensive benefits review today and let’s make sure your money is going exactly where it needs to be.
