title: "IRMAA Brackets 2026: What Early Retirees Need to Know About Medicare Surcharges"
meta_description: "IRMAA adds up to $10,000/year in Medicare surcharges based on income from 2 years ago. See the 2026 brackets, how the lookback works, and how to avoid triggering surcharges."
keywords: ["IRMAA brackets 2026", "Medicare surcharges 2026", "IRMAA income thresholds", "Medicare Part B premium surcharge", "IRMAA early retirement"]
date: "2026-03-21"
If you're approaching 65 or helping a spouse plan for Medicare, there's a tax trap hiding in your retirement plan that most people don't learn about until it's too late: IRMAA.
IRMAA — Income-Related Monthly Adjustment Amount — is a surcharge on Medicare Part B and Part D premiums that kicks in when your income exceeds certain thresholds. Unlike the ACA subsidy cliff, which affects early retirees before 65, IRMAA hits after you enroll in Medicare. And the income it uses to determine your surcharge comes from two years ago.
IRMAA thresholds are adjusted annually for inflation. For 2026, the brackets for individuals filing single returns are:
| Modified AGI (2024 Tax Return) | Part B Monthly Surcharge | Part D Monthly Surcharge | Total Annual Surcharge |
|------|------|------|------|
| $106,000 or less | $0 (standard premium) | $0 | $0 |
| $106,001 – $133,000 | +$70.00/month | +$13.70/month | ~$1,004/year |
| $133,001 – $167,000 | +$175.10/month | +$35.30/month | ~$2,525/year |
| $167,001 – $214,000 | +$280.20/month | +$56.90/month | ~$4,045/year |
| $214,001 – $500,000 | +$385.30/month | +$78.50/month | ~$5,566/year |
| Above $500,000 | +$420.60/month | +$85.80/month | ~$6,077/year |
For married couples filing jointly, the thresholds are doubled (first bracket starts at $212,000).
These are surcharges on top of the standard Part B premium ($185.00/month in 2026) and standard Part D premium (varies by plan). A couple both in the highest bracket pays over $12,000/year in IRMAA surcharges alone.
Here's where it gets tricky: IRMAA uses your Modified Adjusted Gross Income from two years prior. Your 2026 Medicare premiums are based on your 2024 tax return. Your 2027 premiums use your 2025 return.
This creates a planning problem for early retirees:
Roth conversions at age 63 affect Medicare premiums at 65. If you did a large Roth conversion in 2024 to take advantage of low-income early retirement years, that conversion income shows up in your 2024 MAGI — which determines your 2026 IRMAA bracket.
Capital gains from rebalancing count. Sold appreciated stock in a taxable account two years ago? That gain is in your MAGI for IRMAA purposes.
Even one-time income spikes trigger a full year of surcharges. Sold a rental property in 2024? That single event means 12 months of higher Medicare premiums in 2026.
For early retirees between 63 and 65, there's a particularly painful overlap. You might be managing your MAGI to stay under the ACA subsidy cliff (400% FPL, roughly $62,600 single) for marketplace health insurance — while simultaneously needing to plan for IRMAA's two-year lookback once you hit Medicare age.
The conflict looks like this:
The ACA cliff threshold ($62,600) is already well below IRMAA's first bracket ($106,000), so if you're managing for the ACA cliff, you're automatically safe from IRMAA. The risk emerges when you stop worrying about ACA (because you've enrolled in Medicare) and start doing larger Roth conversions — those conversions in year 1 of Medicare affect IRMAA in year 3.
The optimal Roth conversion window for most early retirees is between retirement and age 63. Conversions during this period affect your ACA subsidies (if applicable) but NOT your initial Medicare premiums. After age 63, every dollar of conversion income has a two-year echo into IRMAA territory.
If your income is near an IRMAA threshold, even $1 over triggers the full surcharge for that bracket. The jump from $106,000 to $106,001 costs about $1,004/year. Plan your withdrawals, conversions, and capital gains to land safely below the nearest threshold.
IRMAA allows you to request a reduction if you experienced a qualifying life-changing event: retirement, marriage, divorce, death of a spouse, work reduction, or loss of pension. If your current income is significantly lower than it was two years ago because you retired, file Form SSA-44 with Social Security to request a new initial determination based on current-year income.
If you're between 60 and 65, you're potentially managing both the ACA subsidy cliff and IRMAA lookback simultaneously. Model both together — optimizing for one while ignoring the other can cost thousands. The QuantCalc ACA Cliff Calculator models MAGI against both ACA and IRMAA thresholds so you can see the combined impact of withdrawal decisions.
Instead of one large conversion that spikes MAGI into a high IRMAA bracket, spread conversions across several years. Converting $30,000/year for 5 years keeps you in a lower IRMAA bracket than converting $150,000 in one year — even though the total conversion is the same.
IRMAA is predictable, avoidable, and expensive when ignored. The two-year lookback means your retirement income decisions today will affect your Medicare costs years from now. Early retirees who plan for IRMAA alongside the ACA cliff and Roth conversion strategy save thousands annually.
The key is modeling all three simultaneously: ACA subsidies, IRMAA surcharges, and Roth conversion amounts. Getting one right while ignoring the others is a common and costly mistake.
Start planning at least 3 years before Medicare enrollment. Your 63-year-old self will thank you.
Note: IRMAA brackets are inflation-adjusted annually. The thresholds listed here are based on 2026 CMS guidelines. Always verify current brackets at medicare.gov or consult a tax professional for your specific situation.
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