It is important to sign up for Medicare on time to avoid paying late penalties. The initial enrollment period starts three months before you turn 65 and ends three months after your birthday.
Many people continue to work after 65, especially since the retirement age for full Social Security benefits is 67. If you are working in a job that employs more than 20 full-time employees and offers an employer group health plan (as defined by the IRS) – or if your spouse is the one continuing to work and you’re covered under their plan – you can sign up for Medicare at a later time without facing those late penalties. You have eight months to enroll from the time you leave your job or when you lose your employer-sponsored health plan, whichever comes first.