Originally Posted by Andy

To add a bit of detail for those who go to Tricare for Life (Tricare after reaching age 65), you must enroll in Medicare Part A and Part B.
Medicare Part A has no cost unless you have less than 40 quarters (10 years) of paying Medicare taxes. This applies to very few people so I won't go further on this.

Medicare Part B has a monthly cost based on your income two years prior. IE: 2024 Part B premiums are based on 2022 income.
Chart of monthly cost: https://www.retiremed.com/medicare-part-b
The premiums (Medicare Part A and B) can be paid with RHA money.

I have close to $200K in my RHA and expect to go through all of that in retirement but am no longer wanting any spillage into my RHA. I will get an MBCBP so that I can eventually sweep that money into my IRA when I am permitted.