If you’re 50 or older and earn a healthy income, a rule that took effect this year quietly removed an option you may not have known you relied on: making your 401(k) catch-up contribution pre-tax. It looks like a tax increase. For most of the people it hits, it’s closer to a forced upgrade.
Catch-up contributions are the extra amount the tax code lets people 50 and older put into a 401(k) on top of the regular limit — a way to accelerate savings in the home stretch before retirement. For years, you could make that catch-up pre-tax, shaving your current tax bill just like the rest of your contributions.
As of January 1, 2026, that changed for higher earners. If you earned more than $150,000 in 2025, your catch-up contributions must now be made as Roth — after-tax dollars. You lose the deduction today; in exchange, that money grows tax-free and comes out tax-free in retirement.
The base contribution is untouched. The base elective deferral for 401(k), 403(b), and most 457(b) plans rose to $24,500 in 2026, and that still goes in pre-tax if you want. It’s only the catch-up — the extra slice on top — that has to flip. But for high earners who’ve spent a career stuffing every available dollar into pre-tax accounts, the change is worth understanding, because it’s nudging you somewhere you probably should have been going anyway.
What changed, exactly
The mechanics are narrow and specific:
• Who it hits: anyone 50 or older whose wages from the plan sponsor topped $150,000 in the prior year. The threshold is indexed, and it’s based on that single employer’s wages — not your total household income.
• What flips: only catch-up contributions. For 2026 that’s the extra $8,000 for most people 50 and older, or $11,250 for those aged 60 to 63. Your base deferral still goes in pre-tax if you choose.
• Where it applies: employer plans — 401(k), 403(b), 457(b). IRAs aren’t affected.
• The catch: if your plan doesn’t offer a Roth option at all, high earners simply can’t make catch-up contributions until it does. That’s the part that can quietly cost you the contribution entirely.
Why it feels like a tax increase
The complaint is understandable. You were deducting that catch-up; now you’re not. At a high marginal rate, losing the deduction on $8,000 — or $11,250 — means a real, immediate tax bill you didn’t have last year.
If you were certain you’d retire into a dramatically lower bracket, pre-tax would still win, and this rule would be a genuine loss: pay the tax later, at a lower rate, and you come out ahead.
The trouble is that “dramatically lower bracket” describes fewer high earners than people assume.
Why it’s probably a favor in disguise
Here’s the part the headlines skip. A lot of successful savers reach retirement with the opposite problem they expected: too much in pre-tax accounts. Decades of deductible contributions and growth turn into large required minimum distributions in their 70s — withdrawals you have to take whether you need the money or not, taxed as ordinary income, often stacking on top of Social Security, a pension, and other income.
Those forced withdrawals can push you into a higher bracket in retirement than you were in while working. They can also drive up the cost of Medicare through IRMAA — the income-based surcharge we covered in an earlier post in this series.
Roth dollars sidestep all of it. There are no required distributions on Roth money during your lifetime. Withdrawals don’t count as taxable income, don’t add to the figure that determines IRMAA, and don’t increase the share of your Social Security that gets taxed. For someone whose balance sheet is already lopsided toward pre-tax, being made to build a little tax-free money each year isn’t a punishment. It’s the diversification a good plan would have recommended anyway.
The lost deduction is real. But for many high earners, what it buys — flexibility and a tax-free bucket to draw from later — is worth more than the deduction was.
The one thing to check right now
This rule has a practical trap worth acting on:
• Make sure your plan offers Roth. If it doesn’t, and you’re over the threshold, you can’t make catch-up contributions at all until the plan adds the feature. For a business owner who sponsors the plan, that’s a call to your provider; for an employee, it’s a question for HR or benefits.
• Confirm how your plan is handling it. Many plans use an automatic approach that reclassifies the catch-up for affected employees — but you’ll want to know it’s set up, so the contribution actually goes through and you’re not surprised at tax time.
• Loop in your CPA on timing. Paying tax on the catch-up now changes your current-year picture. It may open the door to other moves, or argue for adjusting elsewhere — a conversation worth having before December, not after.
The pattern
The mandate isn’t the story. A rule that looks like it takes something away is, for most of the people it touches, quietly fixing an imbalance they didn’t know they had. The deduction you lose this year is the tax-free flexibility you gain in the decades that matter most.
That only works if it’s part of a plan rather than a surprise. The catch-up flipping to Roth is a small thing on its own. Folded into a deliberate strategy — balancing pre-tax and Roth, managing future brackets, keeping an eye on RMDs and IRMAA down the line — it’s one more lever pointed in the right direction.
The catch-up you don’t get to deduct today is the catch-up your future self gets to spend tax-free.
A tax rule is a snapshot of what the law wants this year. Whether it helps or hurts you depends on the plan it lands in. The work is making sure your savings are diversified across tax treatments on purpose — so a rule like this one is a nudge in a direction you’d already chosen.
The plan is the residue. The planning is the work.
Key takeaways
• Starting in 2026, anyone 50+ who earned more than $150,000 from their employer in 2025 must make 401(k) catch-up contributions as Roth, not pre-tax.
• Only the catch-up flips; the base deferral (up to $24,500 in 2026) can still go in pre-tax.
• For 2026, the catch-up is $8,000 (age 50+) or $11,250 (ages 60–63); the rule applies to 401(k), 403(b), and 457(b) plans, not IRAs.
• If your plan doesn’t offer a Roth option, high earners can’t make catch-up contributions at all until it’s added.
• Losing the deduction stings now, but Roth dollars avoid required distributions, don’t raise IRMAA, and don’t increase taxable Social Security later.
• For high earners already heavy in pre-tax accounts, the forced Roth catch-up is closer to healthy diversification than a penalty.
Common questions about the 2026 Roth catch-up rule
Who has to make Roth catch-up contributions in 2026?
Anyone 50 or older whose wages from the employer sponsoring the plan exceeded $150,000 in the prior year. The threshold is indexed and based on that one employer’s wages.
Does this affect my regular 401(k) contribution?
No. Only the catch-up — the extra amount above the standard limit — has to be Roth. Your base deferral can still go in pre-tax.
How much is the catch-up?
For 2026, $8,000 for most people 50 and older, or $11,250 for those aged 60 to 63.
What if my plan doesn’t have a Roth option?
Then high earners can’t make catch-up contributions until the plan adds one. It’s worth confirming with your plan sponsor or HR.
Does this apply to my IRA too?
No. The rule covers employer plans — 401(k), 403(b), 457(b) — not IRAs.
Is losing the pre-tax deduction always bad?
Not usually. If you’ll be in a similar or higher bracket in retirement — common for high earners with large pre-tax balances — Roth treatment can come out ahead, and it adds tax-free flexibility.
This article is for informational and educational purposes only and is not intended as tax, legal, or financial planning advice. Contribution limits, income thresholds, and retirement-plan rules change regularly, and their application depends on your specific circumstances and your employer’s plan. Consult your CPA, tax advisor, and financial advisor, and review your plan documents, before making contribution decisions.
Securities and advisory services are offered through LPL Financial (LPL), a registered investment advisor and broker-dealer (member FINRA/SIPC). Insurance products are offered through LPL or its licensed affiliates. Via Luce Capital is not registered as a broker-dealer or investment advisor. Registered representatives of LPL offer products and services using Via Luce Capital, and may also be employees of Via Luce Capital. These products and services are being offered through LPL or its affiliates, which are separate entities from, and not affiliates of Via Luce Capital.
There is no guarantee that a diversified portfolio will enhance overall returns or outperform a non-diversified portfolio. Diversification does not protect against market risk.
*Source: irs.gov