To be eligible for an HSA you cannot be enrolled in Medicare (you are HSA-eligible for the months before being covered by Medicare). If your husband's Medicare coverage began in October, the maximum contribution he could make to an HSA is 9/12 of $4,850 = $3,637.50 if a individual plan or 9/12 of $8,750 = $5,887.50 if a family plan. If he contributed more than that it is an excess contribution and will be subject to a 6% excise tax for each year until it is removed. If it is removed before the due date of your tax return it will not be subject to the tax. What question(s) do you not know how to answer?
**Say "Thanks" by clicking the thumb icon in a post
**Mark the post that answers your question by clicking on "Mark as Best Answer"