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2026 figures

Part D late enrollment penalty

Estimate the monthly Part D penalty using the 2026 national base premium.

14% × $38.99 = $5.46, rounded to the nearest $0.10.

Estimated Part D penalty: $5.50 per month, added to the plan premium for as long as you have Part D (it can change when the national base premium changes).

Your plan and Medicare set the official amount.

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Educational answers — not a plan recommendation.

Educational estimate using public 2026 CMS figures. Not a bill, not a determination, and not a plan recommendation. Confirm on Medicare.gov or with Social Security. We are not affiliated with or endorsed by the U.S. Government or the federal Medicare program.

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We are not affiliated with or endorsed by the U.S. Government or the federal Medicare program. Medisure Agency only has independent insurance agents. We do not offer health or drug plan enrollment on this website. We may help facilitate enrollment after a review of coverage, budget, and lifestyle needs, using carrier- or upline-approved enrollment processes. We do not offer every plan available in your area. Currently we represent 6 organizations which offer Medicare Advantage and Part D products in California. The number of products available to you depends on your ZIP code. For a complete list of options, visit Medicare.gov, call 1-800-MEDICARE (1-800-633-4227), TTY 711, or California HICAP at 1-800-434-0222. Benefits, premiums, networks, and eligibility vary. This site is for education only and is not a determination of a “best” plan.

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Educational answers — not a plan recommendation.