Medicare Supplement Cost Calculator
Compare Medigap supplement plan costs from plan type, age, gender, and location. Enter values for instant results with step-by-step formulas.
Formula
Monthly Premium = Base Rate x Age Factor x Gender Factor x Region Factor x Tobacco Factor
Medigap premiums are calculated starting from a base rate for each plan type, then adjusted for age (approximately 3% increase per year over 65), gender (males typically pay 8% more), geographic region (costs vary 10-20% by area), and tobacco use (15-25% surcharge for smokers). Long-term projections assume a 5% annual increase.
Worked Examples
Example 1: 67-Year-Old Female, Plan G, Midwest
Problem: A 67-year-old non-smoking woman in the Midwest wants Plan G coverage. Estimate monthly and annual costs.
Solution: Base premium Plan G: $200/month\nAge adjustment: 1 + (67-65) x 0.03 = 1.06\nGender adjustment: 1.0 (female)\nRegion (Midwest): 0.90\nTobacco: 1.0\nMonthly = $200 x 1.06 x 1.0 x 0.90 x 1.0 = $190.80\nAnnual = $190.80 x 12 = $2,290\n5-year projected total (5% annual increase): ~$12,657
Result: Monthly: $191 | Annual: $2,290 | 5-Year: ~$12,657
Example 2: 70-Year-Old Male Smoker, Plan N, Northeast
Problem: A 70-year-old male smoker in the Northeast considers Plan N. Calculate estimated costs.
Solution: Base premium Plan N: $150/month\nAge adjustment: 1 + (70-65) x 0.03 = 1.15\nGender adjustment: 1.08 (male)\nRegion (Northeast): 1.20\nTobacco surcharge: 1.20\nMonthly = $150 x 1.15 x 1.08 x 1.20 x 1.20 = $267.93\nAnnual = $267.93 x 12 = $3,215\n10-year total: ~$40,447
Result: Monthly: $268 | Annual: $3,215 | 10-Year: ~$40,447
Frequently Asked Questions
What is a Medicare Supplement (Medigap) plan?
A Medicare Supplement plan, commonly called Medigap, is private insurance that helps cover out-of-pocket costs not paid by Original Medicare Parts A and B. These costs include deductibles, copayments, and coinsurance. Medigap policies are standardized by the federal government and labeled with letters A through N, with each letter offering a specific set of benefits. All Plan G policies, for example, offer the same benefits regardless of which insurance company sells them, though premiums vary between insurers. Medigap policies work alongside Original Medicare, meaning Medicare pays its share first, then the Medigap policy pays some or all of the remaining costs. Unlike Medicare Advantage plans, Medigap policies do not include prescription drug coverage, so enrollees typically also need a standalone Part D plan.
How does Medigap compare to Medicare Advantage?
Medigap and Medicare Advantage represent fundamentally different approaches to Medicare coverage and choosing between them is one of the most important healthcare decisions seniors make. Medigap works with Original Medicare, providing nationwide coverage with any provider who accepts Medicare, offering maximum flexibility and predictable costs but requiring separate Part D drug coverage and typically costing more in monthly premiums. Medicare Advantage replaces Original Medicare with managed care, often including drug coverage and extras like dental, vision, and hearing, with lower or zero premiums but restricted provider networks and potentially significant out-of-pocket costs for serious illness. Medigap is generally better for people who travel frequently, see many specialists, or want predictable costs. Medicare Advantage may suit those who want lower premiums and integrated benefits and are comfortable using network providers.
What is dollar-cost averaging?
Dollar-cost averaging (DCA) means committing a fixed dollar amount — say $500 per month — into an investment on a set schedule, regardless of whether markets are up or down. When prices fall, your fixed amount automatically buys more shares; when prices rise, it buys fewer. This lowers your average cost per share over time versus trying to time the market. DCA also removes emotion from the decision, preventing panic selling or over-buying at peaks. Studies show most individual investors who try to time the market underperform a simple DCA strategy, largely due to behavioral biases. It is especially effective for volatile assets like equities or index funds.
How accurate are the results from Medicare Supplement Cost Calculator?
All calculations use established mathematical formulas and are performed with high-precision arithmetic. Results are accurate to the precision shown. For critical decisions in finance, medicine, or engineering, always verify results with a qualified professional.
Can I share or bookmark my calculation?
You can bookmark the calculator page in your browser. Many calculators also display a shareable result summary you can copy. The page URL stays the same so returning to it will bring you back to the same tool.
Can I use Medicare Supplement Cost Calculator on a mobile device?
Yes. All calculators on NovaCalculator are fully responsive and work on smartphones, tablets, and desktops. The layout adapts automatically to your screen size.