This Medicare Mistake at Age 65 Could Haunt You for the Rest of Your Life

Failing to enroll in Medicare Part B during the seven-month window around age 65 can result in a permanent 10% penalty for each year of delay, increasing monthly premiums significantly. Most pay $202.90 monthly for Part B in 2026, but late enrollment can raise this cost. An exception applies if you or your spouse work for an employer with 20+ employees offering creditable health insurance. Timely enrollment avoids lifelong extra costs.