Enter your profile and coverage selections to estimate your 2026 Medicare costs.
Understanding Your Medicare Costs
In 2026 the standard Medicare Part B premium is $202.90 a month and the Part B deductible is $283. Part A is free for most people (otherwise $311 or $565 a month), and higher earners pay IRMAA surcharges once 2024 MAGI tops $109,000 (single) or $218,000 (joint). The calculator above adds premiums, IRMAA, Part D, Medigap and likely cost-sharing into one yearly estimate.
Medicare is divided into parts, each covering different services with different cost structures. Most people enroll in Part A (hospital insurance) and Part B (medical insurance) at age 65, together forming Original Medicare. Part D adds prescription drug coverage. Medigap (Medicare Supplement) policies fill in the coverage gaps left by Original Medicare, significantly reducing out-of-pocket exposure at the cost of additional premiums.
The biggest surprise for many enrollees is IRMAA (Income-Related Monthly Adjustment Amount): income-based surcharges applied to Part B and Part D premiums. In 2026, individuals with Modified AGI above $109,000 (or $218,000 for married couples filing jointly) pay significantly more than the standard premium. IRMAA is based on income from two years prior, meaning 2026 rates use 2024 MAGI.
2026 Part B Premiums
2026 Part A Costs
Part D in 2026
Medigap Plans
2026 IRMAA Brackets for Part B and Part D
Based on modified AGI from your 2024 tax return. The Part D amount is added to whatever your plan charges. The last column is the extra cost per person for the year compared with the standard premium.
| MAGI, single | MAGI, joint | Part B per month | Part D surcharge | Extra per year |
|---|---|---|---|---|
| $109,000 or less | $218,000 or less | $202.90 | $0 | $0 |
| $109,001 to $137,000 | $218,001 to $274,000 | $284.10 | $14.50 | $1,148.40 |
| $137,001 to $171,000 | $274,001 to $342,000 | $405.80 | $37.50 | $2,884.80 |
| $171,001 to $205,000 | $342,001 to $410,000 | $527.50 | $60.40 | $4,620.00 |
| $205,001 to $499,999 | $410,001 to $749,999 | $649.20 | $83.30 | $6,355.20 |
| $500,000 or more | $750,000 or more | $689.90 | $91.00 | $6,936.00 |
Married filing separately and living with your spouse: $202.90 up to $109,000, then $649.20 (Part D +$83.30) up to $391,000, and $689.90 (Part D +$91.00) above that. IRMAA is a cliff, so one dollar over a threshold costs the whole step. If your income fell because you retired, divorced or lost a spouse, ask Social Security to use a newer year with Form SSA-44.
2026 Part A Costs
| Item | 2026 amount |
|---|---|
| Premium, 40 or more work quarters | $0 |
| Premium, 30 to 39 quarters | $311 a month |
| Premium, under 30 quarters | $565 a month |
| Hospital deductible | $1,736 per benefit period |
| Hospital days 61 to 90 | $434 a day |
| Lifetime reserve days | $868 a day |
| Skilled nursing days 21 to 100 | $217 a day |
A benefit period starts when you are admitted and ends after 60 days in a row out of the hospital or skilled nursing facility, so two separate stays in one year can mean paying the $1,736 deductible twice. Medigap Plans G, N and F cover it.
Worked Examples and Costly Mistakes
Single retiree, MAGI $85,000
No IRMAA. Part B costs $202.90 a month, or $2,434.80 a year, plus the $283 deductible. Using the $38.99 national base premium as a stand-in for a drug plan, Parts B and D come to $2,902.68 a year in premiums before any Medigap policy.
Married couple, joint MAGI $250,000
First IRMAA tier. Each spouse pays $284.10 for Part B, so the couple pays $6,818.40 a year instead of $4,869.60, plus $348 in Part D surcharges. Keeping 2026 income at or below $218,000 would avoid IRMAA in 2028.
Mistakes that cost money every year
- Enrolling late in Part B without job-based coverage: 10% more for each full 12 months you waited, for life. Two years late adds $40.58 a month at 2026 rates.
- Going without drug coverage for 63 days or more: a Part D penalty of 1% of the $38.99 base premium for every month without coverage.
- Missing the Medigap open enrollment window, the 6 months starting when you are 65 and in Part B. After it, insurers in most states can charge more or refuse you based on health.
- Forgetting one-off income such as a Roth conversion or home sale, which can push you into IRMAA two years later.
To see how Medicare fits your retirement budget, use the retirement calculator or the Social Security calculator, since Part B premiums are usually deducted from your benefit.