@Opus 17
<< If you enroll after turning 65 and outside your initial enrollment period, your coverage can start up to 6 months retroactively, making you retroactively ineligible to make HSA contributions. >>
there is a small nuance here that my post points out. While I agree coverage can start up to 6 months retroactively, it can't start before turning age 65, even if you are beyond your initial entrollment period.
Let's say I want to begin Medicare when I am 65 years and 4 months old. It can only begin retroactively back to the MONTH I turned 65 and no earlier, even though I am outside my initial enrollment period and it is less than 6 months retroactively.
It is the month before turning 65 that that HSA contributions have to stop in this example. And that is even complicated because all that means is that the maximum annual contribution calculation stops calculating in that month. for example, I turn 65 in July, 2022 and begin Medicare any time in the last 6 months of the year, my 2022 maximum contribution to an HSA is 50% (6 months / 12) of ($3650 + $1000) assuming single coverage and it has to be contributed before April 15, 2023.
