Are Roth Catch-Up Contributions a Good Idea?

There is no universal answer. It simply varies with the current marginal tax rate, the projected bracket in retirement, the state's treatment of retirement income, and whether your cash flow can absorb giving up a pre-tax deduction now. 

It is not a general concept —- it’s individual tax planning.

The core trade-off

Roth contributions are made with after-tax dollars. You pay income tax on that money today. In exchange, qualified distributions can be tax-free in retirement if statutory conditions are satisfied. Pre-tax catch-up contributions work the opposite way — you defer the tax now and pay it on withdrawal.

If your rate is likely to drop in retirement, pre-tax deferrals generally produce the better mathematical outcome. In case you are expecting to be in the same or a higher bracket later — or if your state taxes retirement income heavily now but you plan to relocate — Roth contributions may produce more after-tax wealth over time.

When Roth catch-up contributions tend to make sense

A few specific situations tilt the calculation toward Roth. 

First, if you are currently in a moderate bracket but expect Social Security, required minimum distributions, and other income to push you into a higher bracket later — locking in today's rate has real value.

Second, Roth accounts are not subject to required minimum distributions during the owner's lifetime under current law. For high earners focused on estate planning or longevity, that flexibility carries weight beyond the simple bracket math.

Third, if you are subject to the SECURE 2.0 Roth catch-up mandate — meaning the prior-year FICA wages from your current employer exceeded USD 150k and you are age 50 or older — the decision is partially made for you. Pre-tax catch-up contributions are not available to you in that scenario starting January 1st of 2026. The relevant question then shifts from "should I do Roth?" to "how do I plan around it?"

Fourth, if you are between ages 60 and 63, SECURE 2.0 presents a higher "super catch-up" limit of USD 11,250 instead of the standard USD 8k. If the FICA wages also clear the USD 150k threshold, that entire USD 11,250 must go in as Roth. The after-tax cost is larger — which makes the bracket math more consequential — not less.

An example case

Sarah is 54, earns USD 175k in W-2 wages, and is currently in the 32% federal bracket. She lives in a state with a flat income tax and plans to retire in the same state. Her projected retirement income — including a pension and Social Security as well as IRA withdrawals — puts her squarely in the 24% bracket.

In Sarah's case, paying 32% tax today on Roth contributions to prevent 24% tax later is a worse mathematical outcome — all else equal. Her CPA might recommend she use pre-tax deferrals now and convert selectively in lower-income years before RMDs begin. But because her FICA wages exceed USD 150k, she has no choice on catch-up contributions starting in 2026 — those must go in as Roth regardless.

What should you do?

Review your 2025 W-2 wages from your current employer against the USD 150k FICA threshold. If you are close to the line — above or below — your elections need a deliberate review before the plan year opens — not after.

Cash flow is critical too. Losing a pre-tax deduction on up to USD 8k in catch-up contributions increases the current-year taxable income. That impact is small for some but meaningful for others. Run the numbers before you default to anything.

For a full breakdown of who the SECURE 2.0 Roth catch-up rules apply to and which plans are covered, contact Alexander Accountants to review your specific 2026 deferral strategy.