When inflation is low, like it is now, there is a disadvantage to delaying until, say 70, collecting one’s retirement benefit. The disadvantage arises with respect to Medicare Part B premiums. If you collecting benefits (actually were collecting them last year), the increase in the Medicare premium this year will be limited to the increase in your Social Security check. This is referred to as being “held harmless.” Hence, when inflation is low, the increase in your check due to the cost of living adjustment will be small, meaning the increase in your Medicare Part B premium will be limited. But, if you aren’t collecting a benefit because you are waiting to collect a higher benefit later, tough noogies. You’re Medicare Part B premium increase won’t be limited. And that increase will be locked into every future year’s Medicare Part B premium that you have to pay. You can wait to join Medicare until, say, age 70, but if you aren’t working for a large employer, the premiums you’ll pay starting at 70 will be higher and stay higher forever. So much for helping the government limit its Medicare spending!