This article is educational only and isn’t personalized tax, legal, or investment advice. Review your specific plan documents and tax situation with your CPA and financial advisor.
Picture your favorite diner. You’ve ordered the same dish off the menu for years, so long that the waiter can recite it off memory without even needing to ask you. Then one night you order the usual, and it comes back looking perfect as usual. It’s not until you actually taste it that you realize the kitchen quietly swapped the recipe on you, and never bothered to mention it.
That’s essentially what just happened to your 401(k) catch-up contribution. The dollar amount going in hasn’t moved. What changed is the recipe behind it, the tax treatment, and payroll never sent a heads up before it hit your paycheck!
Your catch-up contribution just got swapped for a different item on the 401(k) menu, and you didn’t get a vote.
What Actually Changed
This is SECURE 2.0’s mandatory Roth catch-up rule at work, and it’s been law since January 1, 2026.
To briefly summarize it, if you’re 50 or older and earned more than $150,000 in FICA wages from your employer in 2025, every catch-up contribution you make to your 401(k), 403(b), or governmental 457(b) plan in 2026 has to go in as Roth. You give up the deduction this year in exchange for tax-free growth and withdrawals later, as long as you meet the usual Roth rules.
Before 2026, the choice between pre-tax and Roth catch-up contributions belonged to the plan, and often to you. That choice is gone for anyone who crosses the wage line.
| Before 2026 | Starting 2026 | |
|---|---|---|
| Catch-up tax treatment | Pre-tax or Roth, plan’s choice | Mandatory Roth if you earned over $150K in FICA wages the prior year |
| Who it applies to | All catch-up eligible participants, 50 and older | Only “high earners” by wage threshold. Everyone else still has a choice |
| If the plan doesn’t offer Roth | Catch-up still allowed, pre-tax | High earners can’t make any catch-up contribution until the plan adds Roth |
| How the threshold is measured | N/A | Prior calendar year FICA wages from that specific employer |
That last row trips people up more than any other. Your 2026 status is based on your 2025 wages from that employer. If you had a big bonus year, sold equity, or hit an RSU vesting cliff in 2025, you may have crossed the line without meaning to and without realizing it until this paycheck.
Why the Missing Deduction Actually Matters
Losing a pre-tax deduction doesn’t just mean a smaller refund. Because the contribution now flows through as taxable wages on your W-2, your reported income goes up, even though your take-home pay barely moves. That can nudge you into different phase-out ranges for other deductions and credits, and there’s no separate line on your 1040 flagging that this happened. It just shows up as slightly higher income, with no explanation attached.
For catch-up amounts, that’s real money. The standard catch-up limit for 2026 is $8,000. If you’re 60 to 63, the enhanced “super catch-up” is $11,250. That’s a meaningful chunk of income losing its tax shelter in the year you earn it, in exchange for tax-free treatment down the road.
If You Own the Business, This Hits You Twice
Business owners carry a second layer of exposure here. Beyond the risk of crossing the wage threshold themselves, they’re the ones responsible for making sure the plan can accept Roth contributions at all.
Here’s the part that catches owners off guard. If your 401(k) plan doesn’t currently offer a Roth option, and one of your employees (possibly including you) earned over $150,000 last year, that person is locked out of catch-up contributions entirely, full stop, until the plan is actually amended to add Roth.
Plan sponsors have until December 31, 2026 to formally amend plan documents, though operational compliance has already been required since January 1. Waiting until the deadline to deal with this means running payroll under the new rule without the paperwork to back it up, and it means potentially blocking your own catch-up contributions along with everyone else’s.
Ask Yourself
a. Did you earn more than $150,000 in FICA wages from your current employer in 2025?
b. Are you currently making catch-up contributions and genuinely unsure whether they’re being treated as pre-tax or Roth right now?
c. If you own the business, does your 401(k) plan currently offer a Roth option at all, for anyone?
If you answered yes to the first two, this is already affecting your taxes this year, whether you noticed or not. If you answered no to the third, the clock on fixing it is shorter than it looks.
The Fix Is Administrative. The Awareness Is the Hard Part.
None of this requires a dramatic response, just a plan amendment, an updated withholding election, and adjusted contribution elections once you actually know which bucket you’re in. Most people don’t find out they’re affected until a pay stub looks slightly wrong with nothing there to explain why. By the time that happens, the fix itself is easy. Realizing you need one is the hard part.
For business owners, that awareness gap has a second layer. A plan that quietly falls out of compliance puts every high earner on your payroll at risk, not just your own retirement savings, and it’s your plan document that has to catch up.
Is your plan actually ready for a rule that’s already in effect? Or is it just running on the assumption that nothing changed?
That’s worth a real conversation. Book a free consultation and we’ll walk through whether your catch-up contributions, and your plan documents if you’re a sponsor, are actually keeping up with 2026.
Nayhife Wealth Management. Investment advisory services offered through LightSquare Wealth Management, LLC, a Registered Investment Adviser. Nayhife Wealth Management and LightSquare Wealth Management, LLC are separate entities. This content is for informational and educational purposes only and does not constitute legal, tax, or individualized investment advice. Retirement plan and tax rules discussed, including SECURE 2.0’s mandatory Roth catch-up provisions, are general in nature and may not apply to your specific plan or circumstances. Please consult a qualified tax professional and your plan administrator before making changes to your contributions or plan documents. Investing involves risk, including the potential loss of principal. Past performance is not indicative of future results.
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Title tag: Your 401(k) Catch-Up Just Went Roth: What High Earners Need to Know
Meta description (153 characters): Starting in 2026, high earners must make 401(k) catch-up contributions as Roth. Here’s who’s affected and what business owners need to check.
Focus keyword: mandatory Roth catch-up contributions 2026
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- SECURE 2.0 catch-up rule
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Image alt text suggestion: “Diner menu board illustrating the mandatory switch from pre-tax to Roth 401(k) catch-up contributions in 2026”
