What you will learn: how to build an actionable MAGI plan for Medicare IRMAA as of October 2026 — so you can time Roth conversions, withdrawals and asset sales without converting a single high‑income year into a multi‑year premium penalty.

Who this is for: retirees and near‑retirees claiming or about to claim Social Security, households weighing Roth conversions, owners of rental real estate or concentrated stock positions, and anyone approaching RMDs or planning significant taxable events.

Why this matters now (October 2026): IRMAA remains a stealth, recurring expense: premiums for Medicare Part B and D are still set using the Social Security Administration’s two‑year lookback to IRS tax returns. That means decisions you make today — Roth conversions, brokerage sales, crypto dispositions, pension elections — can create elevated premiums that persist for multiple years. With SECURE 2.0’s structural effects still shaping RMD timing and employer plan Roth features increasingly used by high‑income employees, 2026 presents both fresh planning windows and new traps. This update adds timely examples relevant to markets, common 2026 taxable events (e.g., concentrated stock sales and crypto realizations), and practical sequencing to limit IRMAA damage while advancing long‑term wealth transfer goals.

Prerequisites & context: what IRMAA is (and what's unchanged in 2026)

Before you restructure conversions or sell property, confirm these durable facts:

  • Two‑year lookback remains in force: SSA uses the IRS tax information from two years prior to set IRMAA surcharges for Part B and D. As of October 2026, remember the timing: premiums paid in 2028 will generally be based on the MAGI reported on your 2026 tax return (filed in 2027).
  • MAGI definition for IRMAA: MAGI in this context is essentially Adjusted Gross Income (AGI) plus tax‑exempt interest. That includes taxable IRA/401(k) withdrawals, the taxable portion of Roth conversions, capital gains (including from securities, real estate and crypto), and tax‑exempt municipal bond interest.
  • SECURE 2.0 effects remain relevant: the later RMD start age for many retirees (73 for most cohorts entering retirement in 2026) continues to open predictable pre‑RMD windows for modest Roth conversions. Employer Roth expansion (in‑plan Roth conversions and Roth contribution flexibility) continues to affect short‑term MAGI for some households.
  • Appeals and redeterminations: SSA still accepts requests for redetermination (Form SSA‑44) when a qualifying life‑changing event — retirement, significant reduction in work, death of a spouse, loss of pension — produces a materially lower income situation than the lookback return indicates.

Note: SSA updates IRMAA brackets and Medicare premiums annually; don’t finalize a plan without checking the latest SSA IRMAA table for your target benefit year.

Step 1: Build a three‑year IRMAA radar (practical exercise)

IRMAA is fundamentally a timing problem: when income is recognized matters more than the origin of funds. Convert that timing problem into an actionable map.

  1. Get the baseline: pull your last filed Form 1040. Record AGI and any tax‑exempt interest — that’s what SSA has for the two‑year lookback.
  2. Project the three relevant years: as of Oct 2026, map 2026 (the lookback year that will affect 2028 premiums), 2027 and 2028. For each year, list expected sources:
    • Social Security (gross amount and estimated taxable portion)
    • Pensions and annuities (fixed payments, survivor options)
    • Planned IRA/401(k) withdrawals and Roth conversions
    • Capital gains and anticipated sales (securities, second homes, crypto)
    • Rental income and expected depreciation recapture
    • Tax‑exempt interest and distributions from donor‑advised funds
  3. Flag spike events and quantify tipping points: identify any single‑year spikes (asset sales, one‑time bonuses, large conversions) and compute how much incremental taxable income would push you into the next IRMAA tier. Treat that as your action threshold.

Why this works: a single taxable spike can raise your premiums for multiple years. The three‑year map lets you smooth recognition (tranching conversions, structuring real‑estate sales, or moving spending to non‑taxable sources) so IRMAA doesn't compound into a long‑term leak on your retirement cash flow.

Step 2: Separate fixed income from controllable income (establish your MAGI budget)

Divide income into what you cannot change and what you can schedule. This tells you how much “space” you have for conversions, gains or taxable withdrawals without crossing IRMAA thresholds.

  1. List sticky items: declared Social Security, ongoing pension payments and annuity requirements are your floor MAGI.
  2. Identify flexible levers: Roth conversions, timing of security or property sales, brokerage withdrawals, QCDs (Qualified Charitable Distributions), and lot selection for securities.
  3. Create a MAGI budget: pick a target top‑of‑band MAGI for the lookback year — treat it as an annual taxable income cap for conversions and sales. This prevents a single large year from costing more in future premiums than the tax benefit you seek.

Example: suppose your fixed income baseline MAGI is approximately $110,000 and your modeled IRMAA tier begins near $130,000. That gives you $20,000 of headroom for conversions or gains in the lookback year. Instead of one $80,000 conversion, stage four $20,000 conversions across four years to preserve long‑term Roth benefits while avoiding multi‑year premium penalties.

Step 3: Coordinate Roth conversions and withdrawals strategically

Roth conversions often make sense for lifetime tax and estate planning — they reduce taxable RMDs and create tax‑free inheritance — but they raise MAGI today. The sequencing matters.

  1. Model scenarios: run low, medium and aggressive conversion paths and model lifetime taxes and projected IRMAA costs. The decision is multi‑decade; a short‑term premium bump can be worthwhile if it materially lowers estate tax exposure or future RMDs.
  2. Convert up to the margin: convert annually to the point that keeps you under your target IRMAA threshold. Small annual tranches preserve benefits while limiting short‑term surcharges.
  3. Avoid stacking taxable events: avoid doing large conversions in the same year as a major taxable sale (concentrated stock, second home, crypto). If both are unavoidable, prioritize high‑basis lot sales or use Roth or cash reserves for spending needs during the conversion year.

Practical tip: market recoveries can create tempting conversion windows. Run the conversion when other realized gains are low — or combine conversions with tax‑loss harvesting elsewhere.

Step 4: Use taxable account lot selection and installment techniques

Taxable brokerage accounts and sales structuring are powerful smoothing tools.

  1. Inventory lots: sell high‑basis lots first to meet spending needs without large capital gains.
  2. Spread large sales: for real‑estate or private business exits, structured sales (installment sales, seller financing) can spread recognition and prevent a single‑year MAGI spike. For securities, design a multi‑year sale plan coordinated with conversion windows.
  3. Manage fund distributions: mutual fund capital gain distributions can create surprises. Consider tax‑managed funds or holding individual securities to control realization timing.

Real‑estate note: depreciation recapture is taxed as ordinary income and can be a hidden MAGI driver. When selling a rental, model recapture and capital‑gain timing; if possible, spread taxable recognition or explore 1031‑like deferrals for qualifying investment property to smooth the hit.

Step 5: Use the pre‑RMD window intentionally

With RMD ages still generally at 73 for many who turned 72 in the last few years, pre‑RMD years are strategic windows for conversions.

  1. Project future RMDs: estimate RMDs conservatively using current balances and reasonable growth rates. This shows whether pre‑RMD conversions will meaningfully reduce future mandatory withdrawals.
  2. Convert earlier in modest tranches: conversions before RMDs begin often cost less in aggregate and can be structured to avoid IRMAA tiers.
  3. Use QCDs where appropriate: QCDs up to the statutory limit remain an effective way to satisfy RMDs without increasing AGI and can reduce IRMAA exposure for charitably inclined retirees.

Step 6: Treat Social Security claiming as a MAGI lever

When you claim Social Security affects both lifetime benefits and near‑term MAGI.

  1. Model claiming ages with MAGI: overlay claiming at 62, FRA and 70 on your three‑year map. Delaying benefits may create room for conversions in early retirement; claiming earlier can reduce later taxable income and IRMAA risk. Compare the tradeoffs quantitatively.
  2. Coordinate with spouse filing: if filing statuses or incomes differ materially between spouses, coordinate claiming and conversion timing to manage household MAGI across years.

Step 7: Pension elections and legacy tradeoffs

Pension lump sum versus annuity decisions have IRMAA consequences.

  1. Compare MAGI profiles: an annuity smooths income and MAGI but could raise baseline MAGI for many years. A lump sum rolled to an IRA defers immediate taxation but may increase future RMDs and MAGI.
  2. Consider survivor outcomes: survivor annuity options simplify a surviving spouse’s cash flow and premium planning but reduce estate liquidity — weigh these against long‑term legacy goals.

Step 8: Appeal promptly and document thoroughly

If your IRMAA surcharge reflects a past high income that no longer applies, file redetermination with SSA using Form SSA‑44 and strong documentation. Common qualifying events include retirement, significant reduction in work, death of a spouse and loss of pension. SSA processes well‑documented cases faster—include termination letters, settlement statements, and benefit notices.

Common mistakes to avoid

  • Doing one large Roth conversion without checking the two‑year lookback and IRMAA tipping points.
  • Selling appreciated property or realizing crypto gains in the same year you plan large conversions or face rising RMDs—stacking taxable events is the most common trigger.
  • Assuming tax‑exempt interest won’t affect IRMAA—municipal interest is included for IRMAA purposes.
  • Forgetting to reassess plans after a spouse’s death—filing status, taxable income and IRMAA exposure can change materially.

Pro tips (advanced, multi‑generational focus)

  • Adopt an annual MAGI budget: set a taxable income cap and treat IRMAA tiers as spending limits to protect long‑term portfolio value and heirs’ tax position.
  • Stagger events across spouses: where practical, spread recognition across spouses’ returns or tax years to reduce single‑year MAGI spikes.
  • Harvest losses strategically: use tax‑loss harvesting to offset gains in years you otherwise risk crossing an IRMAA tier.
  • Maintain a 1–3 year cash buffer: removes pressure to realize taxable income during downturns and avoids forced conversions or sales that create IRMAA exposure.
  • Think generationally: because stretching distributions for many non‑spouse beneficiaries is no longer available (post‑SECURE Act rules), converting to Roth can simplify inheritance and reduce estate‑era tax surprises for heirs.

Updated examples — October 2026

These concise, realistic scenarios show sequencing choices you can implement this tax year.

  1. Couple scenario — staged conversions to avoid IRMAA: Alex and Maria (both 68). Baseline MAGI = $110,000 from Social Security, a small pension and rental losses. They plan $90,000 in total Roth conversions. Instead of a one‑time conversion, they convert $30,000 in 2026, $30,000 in 2027 and $30,000 in 2028. The staged approach keeps each tax year under their modeled IRMAA threshold, avoiding a multi‑year surcharge while still completing conversions in a 3‑year window.
  2. Concentrated stock sale + conversion coordination: Jordan (70) has a concentrated employer stock position. He plans to sell $250,000 to diversify. By structuring an installment sale spread across two calendar years and pairing smaller Roth conversions in the low‑gain year, Jordan avoids a single‑year MAGI spike that would have raised premiums for multiple years.
  3. Crypto realization risk: Priya (65) holds crypto with large unrealized gains. She needs cash for an emergency. Selling in a low‑income year and/or harvesting losses in other pockets first reduces the taxable gain reported in the lookback year and limits IRMAA exposure.

FAQ

Does a qualified Roth distribution count toward IRMAA MAGI?

Qualified Roth IRA distributions that meet the five‑year seasoning rule and age/exception requirements are generally tax‑free and do not increase AGI for IRMAA. Non‑qualified distributions that include earnings can increase AGI. Maintain clear records of conversion dates and distribution forms to support the tax treatment if SSA queries your return.

Can I get IRMAA removed after a one‑time high‑income year?

Possibly. If the high income reported to SSA was caused by a qualifying life‑changing event (retirement, significant reduction in work, death of a spouse, or loss of pension), you can request redetermination with Form SSA‑44 and supporting documentation. File promptly; well‑documented cases are processed more quickly.

Are QCDs still a reliable IRMAA tool in 2026?

Yes. Qualified Charitable Distributions (QCDs) remain an effective way to satisfy RMDs without increasing AGI. For charitably inclined retirees, properly executed QCDs reduce taxable income that would otherwise contribute to IRMAA. Coordinate with your custodian to ensure QCDs are coded correctly.

If I pay higher premiums now because of conversions, can that still be the right choice?

Yes. A temporary IRMAA increase can be the right strategic tradeoff if conversions meaningfully shrink future RMDs, reduce lifetime taxes, or create tax‑free assets for heirs. Treat the decision as a multi‑decade tradeoff — model lifetime outcomes rather than single‑year savings alone.

Where do I confirm current IRMAA thresholds and premiums?

The Social Security Administration publishes the IRMAA income brackets and Medicare premium tables each year. Because thresholds change with inflation and policy updates, always verify the SSA IRMAA table for the benefit year you’re planning toward (remember: SSA uses tax data from two years prior). Work with your CPA or financial planner to run scenarios using current SSA tables and your projected returns.

Disclosure: This article provides general information and illustrative examples and is not individualized tax, legal, or investment advice. Rules and thresholds change; verify current SSA tables and IRS guidance and consult your CPA or fiduciary advisor before executing large conversions, sales, or pension elections.