Congress Handed 65-Year-Olds a $6,000 Deduction. Then It Took Away Your Pre-Tax Catch-Up.

The tax code gave with one hand this year and rearranged the furniture with the other. If you are 60-something and still working, both changes hit you in the same filing season.

What is the new $6,000 senior deduction?

Under the 2025 tax law (P.L. 119-21), taxpayers age 65 and older get an additional $6,000 deduction — $12,000 for a married couple where both spouses are 65+ — for tax years 2025 through 2028. It sits on top of the extra standard deduction seniors already get, and it phases out at higher incomes.

It has been marketed as "no tax on Social Security." It is not that. It is a deduction that lowers taxable income, which can indirectly mean less of your Social Security benefit gets taxed. The distinction matters, because the deduction is temporary and the taxability of Social Security is not.

Confirm your own phase-out range against the IRS eligibility page before you count the money. The IRS has a dedicated page for the enhanced senior deduction and a 2026 filing-season resource page for seniors.

What changed about catch-up contributions in 2026?

This is the one that catches people mid-stride. Starting January 1, 2026, under SECURE 2.0 Section 603, if you are 50 or older and your prior-year FICA wages from that employer exceeded roughly $150,000 (indexed), all of your catch-up contributions to a 401(k), 403(b), or governmental 457(b) must be Roth — after-tax. The IRS finalized the regulations on November 12, 2025.

No more pre-tax catch-up for that group. The deduction you were counting on in your highest-earning years is gone.

Is the Roth catch-up rule actually bad for you?

Here is the uncomfortable answer: for a lot of people, it is a favor delivered rudely.

Pre-tax catch-ups grow the pile the IRS eventually taxes — and that pile is what drives required minimum distributions, the Social Security tax torpedo, and Medicare surcharges later. Roth catch-ups cost you now and produce money that does not show up in any of those calculations later.

What is genuinely bad is finding out in March that your withholding assumed a deduction you no longer get.

What about Medicare surcharges in all this?

The 2026 income-related surcharges on Medicare Part B and Part D are set off your 2024 income — a two-year lookback — and CMS published the 2026 figures on November 14, 2025. The standard 2026 Part B premium is $202.90 a month. Pull the exact bracket cut-points from the CMS fact sheet rather than trusting a number in a sales email, including this one.

The three-item checklist

• If you turn 65 in 2026: verify whether you qualify for the $6,000 deduction and whether your income phases it out.
• If you are 50+ and earning above the wage threshold: confirm with payroll or HR that your catch-up is being coded Roth, and re-check your withholding.
• If you are doing conversions: remember 2026 income sets 2028 Medicare premiums. Cross a bracket by a dollar and you pay the whole tier.

Bottom line: a temporary deduction and a permanent rule change landed in the same year. Only one of them is going to still be there in 2029.

Sources: IRS "Check your eligibility for the new enhanced deduction for seniors"; IRS 2026 filing season resources for seniors; Congressional Research Service R48613 on the senior deduction in P.L. 119-21; IRS final regulations on Roth catch-up contributions (November 12, 2025); CMS 2026 Medicare Parts A & B premiums and deductibles fact sheet (November 14, 2025). Verify your own thresholds with a tax professional — this is reporting, not advice.