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When Can a Prorated HSA Contribution Be Made When a Person Turns 65?

Published October 21, 2024

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Short answer: You can’t contribute to an HSA in the month you turn 65 and become Medicare-eligible, except for a prorated contribution if you’re still enrolled in an HDHP when you turn 65 mid-year.

Turning 65: Medicare eligibility and HSA stops

When an individual turns 65, they become eligible for Medicare benefits. At this point, they can no longer contribute to their Health Savings Account (HSA) for that month. However, there is an exception to this rule. If a person turns 65 in the middle of the year and is still enrolled in a High Deductible Health Plan (HDHP), they can make a prorated HSA contribution for that year.

When an individual turns 65, they become eligible for Medicare benefits, which means they can no longer contribute to their Health Savings Account (HSA) in that month. However, there is a notable exception for those enrolled in a High Deductible Health Plan (HDHP) and turning 65 mid-year: they can still make a prorated HSA contribution for the months preceding their Medicare enrollment.

Prorated HSA contributions when 65 mid-year

The prorated contribution amount is calculated based on the number of months the individual was eligible to contribute to the HSA. For example, if someone turns 65 in July and has been enrolled in an HDHP since January, they can make a prorated contribution for seven months.

HDHP enrollment requirements for continued HSA contributions

It's important to note that individuals must remain enrolled in an HDHP to continue making contributions to their HSA. Once they are no longer enrolled in an HDHP or enroll in Medicare, they can no longer contribute to their HSA.

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