The 2026 Retirement Tax Playbook: IRMAA, Roth Conversions, RMDs & More

Retirement taxes are where careful planners save six figures — and where everyone else overpays quietly for decades. Between IRMAA surcharges, RMD stacking, Roth conversion windows, and the widow’s penalty, the tax code treats retirees very differently from workers. This hub collects our 2026 guides into one playbook. Start with the topic that fits your age, then work the links — they’re designed to be read as a set.

1. Keep More of Your Medicare: IRMAA

Your 2026 Medicare premiums were set by your 2024 tax return. If your income crossed $109,000 single / $218,000 joint, you’re paying surcharges — per person, with no phase-in. Learn the brackets, the two-year lookback, and how Form SSA-44 can undo it after a life-changing event.
→ IRMAA Brackets 2026: Medicare Surcharges by Income

2. The Golden Window: Roth Conversions at 60–62

Ages 60–62 are often the lowest-tax years of your life — no wages, no Social Security, no RMDs. Every dollar converted now escapes the higher brackets waiting at 73. Includes the 2026 bracket math and the five rules that keep conversions from backfiring.
→ Roth Conversion at 60–62: Fill Brackets Before RMDs
Related: Roth vs Traditional IRA 2026 · Backdoor Roth IRA Guide

3. Inherited IRAs: The 10-Year Clock Is Ticking

Miss an annual RMD on an inherited IRA and the penalty is 25% — enforced since 2025. Whether you owe annual distributions depends on when the original owner died. The decision tree, the penalty holiday that’s over, and how to spread distributions across the window.
→ Inherited IRA 10-Year Rule 2026: RMDs Now Enforced

4. Pension: Lump Sum or Monthly Checks?

With 2026 segment rates at 4.07% / 5.15% / 6.01%, lump sums look very different than four years ago. Run the break-even math (expect age 78–83), weigh the PBGC backstop, and don’t anchor on a colleague’s 2021 offer.
→ Pension Lump Sum vs Annuity 2026: Break-Even Math
Related: Annuity Pros and Cons 2026

5. Protect Your Spouse: The Widow’s Tax Trap

The cruelest surprise in the tax code: the year after a spouse dies, the same income gets taxed at higher rates — brackets compress, deductions halve, IRMAA bites at half the threshold. Entirely predictable, largely preventable — if you plan while both spouses are alive.
→ Widow’s Tax Trap 2026: The Penalty No One Warns About
Related: Social Security: When to Claim

How to Use This Playbook

• In your late 50s? Start with Roth conversions (#2) and the pension decision (#4).
• Approaching 65? IRMAA (#1) first — your 2024 return already set your 2026 premiums.
• Recently inherited? The 10-year rule (#3) — check this year’s RMD before December 31.
• Planning as a couple? Read the widow’s trap (#5) together, then do #2.

Not financial advice. Do your own research. Tax rules are complex — consider a qualified advisor for your situation.