Can the $640 be used for expenses incurred during the prior Plan Year or expenses incurred in the new Plan Year? Or both?
Both. The carryover of up to $640 may be used for eligible medical expenses incurred during the prior Plan Year, from which the funds were carried over, or the entire new Plan Year, to which the funds are carried over.
For this purpose, the carryover amount is the amount remaining after medical expenses have been reimbursed at the end of the plan’s run-out period for the Plan Year.
NOTE: A “run-out period” is the time immediately following the end of a Plan Year during which a participant can submit a claim for reimbursement of expenses incurred for eligible expenses during the Plan Year.