Calculators
Free Medicare Calculators
Five interactive tools to help you estimate penalties, compare coverage costs, and plan ahead. Enter your numbers below — everything calculates instantly right here on the page.
Part B Late Enrollment Penalty
Estimate how a late Part B enrollment could affect your monthly premium.
Based on the 2026 standard Part B premium of $202.90/month. This penalty is generally added to your premium for as long as you have Medicare.
Part D Late Enrollment Penalty
Estimate the penalty for going without creditable prescription drug coverage.
Based on the 2026 national base beneficiary premium of $38.99. This penalty amount is added on top of whatever Part D plan premium you eventually choose — it does not include the plan's own premium, which varies by plan.
Medicare Advantage vs. Medigap Cost Comparison
A rough, illustrative comparison of estimated annual costs — not a quote. Actual costs vary by plan, insurer, and location.
| Cost item | Medicare Advantage | Medigap (Plan G) |
|---|---|---|
| Estimated annual premiums | $0 | $0 |
| Estimated annual visit/admission costs | $0 | $0 |
| Estimated total annual cost | $0 | $0 |
This is an illustrative estimate, not a quote. Assumes Medicare Advantage copays of about $25/primary care visit, $50/specialist visit, and $1,556 per hospital admission (an illustrative copay, not the Original Medicare deductible), on top of your chosen monthly premium budget. Assumes a Medigap Plan G monthly premium of about $165 (varies widely by state and insurer) with near-zero per-visit cost after the annual Part B deductible ($283 in 2026), since standard Plan G covers covered Part B coinsurance. Both totals exclude the common Part B premium and separate Part D costs. Adjust these assumptions to your actual plan quotes for an accurate comparison.
IRMAA Calculator
See whether income-related monthly adjustment amounts (IRMAA) apply to your Part B premium.
IRMAA uses a two-year lookback, so your 2026 Part B premium is based on your 2024 tax return MAGI. These are Part B adjustments for full Medicare coverage, using the published CMS 2026 brackets. Separate returns have different brackets if spouses lived together during the tax year. Social Security determines your actual premium; Part D adjustments are separate.
Retirement Healthcare Gap
If you plan to retire before age 65, estimate the cost of covering healthcare until Medicare eligibility begins.
No coverage gap — Medicare eligibility begins at 65.
Assumes Medicare eligibility begins at age 65. Does not account for employer retiree coverage, COBRA, or ACA marketplace subsidies, which may reduce your actual cost.
These calculators provide estimates only and are not a substitute for personalized advice from a licensed insurance agent.
Frequently Asked Questions
Are these Medicare calculators free to use?
Yes. All calculators on this page are free, run instantly in your browser, and require no sign-up or personal information.
How is the Medicare Part B late enrollment penalty calculated?
The Part B penalty adds roughly 10% to your monthly premium for each full 12-month period you were eligible for Part B but didn't enroll and didn't have other creditable coverage. This penalty is generally permanent for as long as you have Part B.
What is IRMAA and how does it affect my premium?
IRMAA (Income-Related Monthly Adjustment Amount) is a surcharge added to Part B and Part D premiums for higher-income beneficiaries, based on your reported income from two years prior.
Can a calculator tell me exactly what I will pay?
These calculators provide estimates based on the figures you enter and current published formulas. Your actual costs depend on your specific enrollment history, income, and plan choice — a licensed agent can confirm exact numbers for your situation.