The 401(k) Catch-Up Rule That Hits $150K Earners

You are 55, you earn comfortably over $150,000, and you have been making catch-up contributions to your 401(k) for years. Every one of them came off your taxable income. You budgeted around that deduction without ever really thinking about it.

This year it disappeared. The 401(k) catch-up rule now forces higher earners to put those extra dollars into a Roth account instead of a pre-tax one, which means the money is taxed on the way in rather than on the way out.

Nobody announced this loudly. It was written into the SECURE 2.0 Act back in 2022 with a delayed start, and for most affected savers the first sign was a payroll notice. Here is exactly who it hits, what it costs this year, and the one calculation that tells you whether you have actually lost anything.

Start with whether this applies to you at all, because the threshold is narrower than most coverage suggests.

Who the 401(k) Catch-Up Rule Actually Hits

Three conditions have to be true at once, and missing any one of them leaves you exactly where you were.

First, you must be aged 50 or over, which is what makes you eligible for catch-up contributions in the first place. Second, your wages subject to payroll tax from the employer sponsoring the plan must have exceeded $150,000 in the prior year. Third, your plan has to offer a Roth option, because the rule works by requiring one.

That second condition carries more weight than people expect. It is per employer, not per household and not per tax return. Someone who changed jobs mid-year, or who earns a large share of income from a second source, may fall below the threshold at the sponsoring employer even with a high total income.

The threshold is indexed, so it rises over time. The IRS page on catch-up contributions is the place to confirm the current figure before you plan around it.

The Limits You Are Working With

The numbers moved up this year, which softens the blow slightly.

• Employee deferral limit: $24,500, up from $23,500
• Catch-up at age 50 and over: $8,000
• Enhanced catch-up for ages 60 to 63: $11,250, where the plan permits it
• IRA contribution limit: $7,500, with a $1,100 catch-up

Only the catch-up portion is affected. The first $24,500 can still go in pre-tax if that is what you want and your plan supports it. So a 55 year old maximising everything is putting $24,500 in on whichever basis they choose and $8,000 in as Roth, whether they like it or not.

The ages 60 to 63 band is the one worth checking against your plan document. It is optional for employers, and at $11,250 the difference against the standard $8,000 is large enough to be worth a conversation with your benefits team.

One more change sits alongside this. The saver's credit income limits rose to $80,500 for married couples filing jointly, up from $79,000, and to $60,375 for single filers and heads of household.

The Worked Example: What Losing the Deduction Costs

Assume a 55 year old in the 24% marginal bracket contributing the full $8,000 catch-up.

The immediate hit is simple. $8,000 at 24% is $1,920 of tax you now pay this year that you previously deferred. Your take-home falls by that amount if you keep the contribution the same.

Now run it forward 15 years at a 7% annual return, which is a common long-run planning assumption rather than a promise. The $8,000 grows to about $22,073.

Compare the two outcomes honestly. With Roth, that $22,073 comes out tax-free, and the $1,920 was paid from other money. With pre-tax, the same $22,073 is taxed on withdrawal, but you also had $1,920 free to invest today, which itself grows to roughly $5,297.

• Roth path: $22,073, tax-free
• Pre-tax path at a 22% retirement rate: $17,217 after tax, plus $5,297 from the reinvested deduction, totalling $22,514
• Pre-tax path at a 32% retirement rate: $15,010 after tax, plus $5,297, totalling $20,307

Read that carefully. At a lower retirement rate the old pre-tax treatment was worth about $442 more. At a higher retirement rate, the forced Roth treatment is worth about $1,766 more. The rule is not a straight loss. It is a bet that your rate in retirement will be higher than you think.

Only one assumption in that table actually matters, and you can test your own version with a compound interest calculator in about two minutes.

Four Moves Worth Making This Year

The rule is not optional, but how you respond to it is.

Check your payroll election before year end. Some plans auto-converted affected savers to Roth catch-up and some simply stopped the catch-up until the employee re-elected. The second outcome quietly costs you $8,000 of contribution space.

Rebalance where your tax diversification sits. If almost everything you have is pre-tax, a forced Roth bucket is a genuine improvement, because it gives you a source of retirement income that does not push up your taxable total.

Re-check your withholding. Losing a deduction you have had for years changes your tax position this April, and a $1,920 surprise is an unpleasant way to find that out.

Finally, do not let the cash sit idle while you decide. Contributions you delay are contributions you usually never make, and the alternatives are not generous right now, as our look at where to put cash as savings rates fall lays out.

Frequently Asked Questions

Do I have to make Roth catch-up contributions?

If you are 50 or over and your prior-year wages from the employer sponsoring your plan exceeded $150,000, then yes, any catch-up contribution has to be Roth. Below that wage threshold, you can still make catch-up contributions pre-tax.

Does the Roth rule apply to my whole 401(k) contribution?

No. It applies only to the catch-up portion, which is $8,000 for most savers aged 50 and over. The standard $24,500 deferral can still be pre-tax if your plan allows it.

Is the $150,000 threshold based on household income?

No. It is based on your wages subject to payroll tax from the single employer that sponsors the plan, in the prior year. Household income, investment income and earnings from a different employer do not count toward it.

Is losing the pre-tax deduction actually bad for me?

It depends on your tax rate now against your expected rate in retirement. If your retirement rate will be lower, pre-tax was better. If it will be the same or higher, Roth treatment usually leaves you ahead, because the growth comes out untaxed.

What happens if my plan does not offer a Roth option?

Then affected employees generally cannot make catch-up contributions at all under the rule, which is why most plan sponsors added a Roth option ahead of the start date. If yours has not, ask your benefits team directly, because the lost contribution space does not carry forward.

Where This Leaves You

A deduction you had quietly relied on is gone, and the money involved is real: $1,920 this year on a full catch-up at a 24% rate. Being annoyed about that is fair.

What the arithmetic shows is that the long-run damage is small and could easily be a gain. The variable that decides it is your tax rate in retirement, not the rule itself.

Do two things before year end: confirm your catch-up election is still active, and write down what you expect your retirement tax rate to be. If you have never built that estimate, our beginner's guide to investing is a reasonable place to start the arithmetic.

Disclaimer: This article is for informational purposes only and does not constitute financial advice. Always consult with a qualified financial advisor before making investment decisions. Past performance is not indicative of future results.