Compare Medigap (Medicare Supplement) plans F, G, and N side by side. Estimate annual costs based on premiums, deductibles, and expected usage.
Medigap (Medicare Supplement) plans fill the cost-sharing gaps in Original Medicare — deductibles, coinsurance, and excess charges. Plans are standardized by letter (A through N), but the three most popular are Plans F, G, and N, which together cover over 80% of the Medigap market.
Plan F covers everything, but has the highest premiums. Plan G covers everything except the Part B deductible, saving $500–$1,000+ in annual premiums. Plan N has the lowest premium but adds small copays ($20 office visits, $50 ER) and doesn't cover Part B excess charges.
This calculator compares your total annual cost across Plans F, G, and N based on actual premiums and expected healthcare usage. These are educational estimates only — Medigap premiums vary by state, age, and insurance company. Whether you are a beginner or experienced professional, this free online tool provides instant, reliable results without manual computation. By automating the calculation, you save time and reduce the risk of costly errors in your planning and decision-making process.
Choosing the right Medigap plan can save hundreds to thousands of dollars per year. This calculator makes the comparison concrete by factoring in both premiums and expected out-of-pocket costs. Having a precise figure at your fingertips empowers better planning and more confident decisions. Manual calculations are error-prone and time-consuming; this tool delivers verified results in seconds so you can focus on strategy.
Plan F Total = F Premium × 12 Plan G Total = G Premium × 12 + Part B Deductible Plan N Total = N Premium × 12 + Part B Deductible + ($20 × Doctor Visits) + ($50 × ER Visits) Best Plan = lowest total annual cost
Result: Plan G: $2,340 | Plan N: $1,960 | Plan F: $2,640
Plan F: $220 × 12 = $2,640. Plan G: $175 × 12 + $240 deductible = $2,340. Plan N: $130 × 12 + $240 + ($20 × 8 visits) = $1,960. Plan N is cheapest with 8 doctor visits and no ER visits.
Plan F is the only Medigap plan that covers the Part B deductible, and it was closed to new enrollees in 2020. This creates a shrinking, aging risk pool, causing premiums to rise faster than other plans. Many financial advisors recommend switching from Plan F to Plan G while you're still healthy enough to pass underwriting.
Plan N's lower premiums can save $500–$1,200/year compared to Plan G, making it attractive for healthy beneficiaries. The copays ($20 per office visit, $50 per ER visit) and Part B excess charge exposure are manageable risks for most. The key question is whether your office visit frequency makes the premium savings worthwhile.
When comparing plans, look beyond current premiums. Attained-age plans start cheap but get expensive in your 80s. Issue-age plans cost more initially but grow slower. The cheapest plan at 65 may be the most expensive at 80. Request 10-year premium histories from carriers before choosing.
Plan F covers all Medicare cost-sharing with zero out-of-pocket. Plan G is identical to F but doesn't cover the Part B deductible (~$240/year). Plan N doesn't cover the Part B deductible, charges up to $20 for office visits and $50 for ER visits, and doesn't cover Part B excess charges.
Plan G typically has premiums $40–65/month less than Plan F, saving $480–$780/year. The only difference is the Part B deductible ($240). So you save $240–$540 net per year with Plan G. Plan F also has a smaller, aging risk pool since it's closed to new enrollees, leading to faster premium increases.
Excess charges occur when a doctor doesn't accept Medicare assignment and bills up to 15% above the Medicare-approved amount. Plans F and G cover excess charges; Plan N does not. In practice, over 98% of doctors accept assignment, making this a minor risk for most beneficiaries.
The best time is during your 6-month Medigap Open Enrollment Period, which starts when you're 65+ AND enrolled in Part B. During this window, insurers must sell you any plan at the best price with no health questions. After this period, you may face medical underwriting and higher premiums or denial.
Yes, Medigap premiums increase over time. Pricing methods vary: community-rated (same price regardless of age), issue-age-rated (based on age at purchase, increases only with inflation), and attained-age-rated (increases as you age). Community-rated and issue-age-rated plans cost more initially but less over time.
You can always switch, but outside the Open Enrollment Period, insurers can (and do) apply medical underwriting. If you have health conditions, you may be denied or charged higher premiums. A few states have guaranteed-issue rights for plan switching. Check your state's rules.