What happens if there is money left in my account(s) at the end of the year?
If you have leftover funds and no more reimbursable expenses, under IRS regulations, the money in your account will be forfeited and reverts to the general asset account of your employer. This is known as the “Use it or Lose it” rule. For this reason, you need to make conservative estimates of your reimbursable expenses prior to each plan year.