Care · Medicare
Medicare IRMAA Calculator
Income can change the Medicare bill.
Use this to see how Medicare income thresholds may change Part B and Part D premium exposure.
Estimate Part B and Part D income-related monthly adjustment amounts using 2026 federal thresholds and visible assumptions.
Best for: Households planning retirement income, Roth conversions, capital gains, or other income that may affect Medicare premiums.
Estimate inputs
IRMAA depends on Medicare MAGI, filing status, lookback year, and possible life-changing event adjustments. Use this to prepare questions, not to determine billing.
Assumptions
- Uses 2026 Medicare Part B and Part D IRMAA thresholds.
- Uses the income entered as the Medicare MAGI lookback amount.
- Does not determine appeals, life-changing-event adjustments, or final Social Security billing.
Medicare planning boundaries
Medicare calculators should separate premiums, deductibles, IRMAA, prescription coverage, supplemental coverage, and care needs. The expensive mistake is assuming Medicare covers every long-term care cost just because someone has Medicare.
- Medicare costs and income thresholds update by year, and Social Security or Medicare notices control the actual billed premium.
- Part D costs depend on plan premium, covered drugs, pharmacy, coverage stage, income adjustments, and creditable coverage history.
- Long-term custodial care usually needs a separate plan from Medicare premiums and deductibles.
Related tools and tracks
Source links used for this calculator family
- CMS 2026 Medicare Parts A and B premiums
- Medicare 2026 costs
- Medicare Part D costs and late enrollment penalty
- Medicare nursing home coverage
- IRS 2026 HSA limits
- IRS 2026 health FSA limits
- IRS Publication 926 household employer guide
- DOL domestic service fact sheet
- USCIS domestic workers Form I-9
- USCIS H-2B temporary non-agricultural workers
- DOL H-2B program
Source check and limits
Last source check: April 28, 2026
Scope checked: Federal Medicare 2026 IRMAA thresholds and premium defaults only; Social Security notices, tax-year lookback, and life-changing events can change billing.
- Medicare, insurance, HSA, FSA, and long-term care rules can change by year, plan, location, income, employer, and eligibility.
- Confirm plan details with Medicare, insurers, employers, licensed agents, tax professionals, or other qualified advisors before acting.
Kefiw shows the assumptions used so you can audit the math before relying on the result. This tool does not provide legal, tax, payroll, accounting, medical, insurance, benefits, immigration, compliance, or provider-specific pricing advice.