Medicare Cost Estimator | Life Calculators

Annual Income (MAGI) ?Modified Adjusted Gross Income from your tax return. If above certain thresholds, you pay IRMAA surcharges on top of standard premiums.

Filing Status ?Married Filing Jointly has higher IRMAA thresholds, meaning you can earn more before surcharges kick in.

Part D Drug Plan ?Your chosen prescription drug plan premium. 2025 national average is about $46/month under the new Part D redesign (with $2,000 out-of-pocket cap). Plans range $0–$120 depending on coverage.

$/mo

Medigap Supplement ?Medigap (Medicare Supplement) covers gaps in Original Medicare. Plan G is most popular — averages $160–280/month in 2025 depending on your state, age, and underwriting.

$/mo

Total Monthly Medicare Cost

—

Important notes about this calculator

Uses 2025 IRMAA brackets and 2025 Part B base ($185). CMS publishes 2026 figures each November — expect ~3% bracket inflation. IRMAA looks back 2 years — your 2024 income determines 2026 premiums. Major life events (work stoppage, divorce, marriage, death of spouse) qualify for a one-time IRMAA appeal — file Form SSA-44. Part D shown reflects the new $2,000 out-of-pocket cap that started Jan 2025 — your specific drug list matters more than the average.