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Medicare Part B Late Enrollment Penalty Calculator 2026: How to Calculate and Avoid Costly Penalties

Use our Medicare Part B penalty calculator to determine your 2026 late enrollment costs. Learn how penalties are calculated and strategies to avoid them.
Aaron Sims
Reviewed byAaron Sims·Updated Feb 09, 2026
A teal calculator and white pen on a white surface.
Photo by Sasun Bughdaryan on Unsplash

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