health savings account plan document
With an HRA, the employer has the option to fund the account on a month-to-month basis. The employer also decides what happens with unused HRA balances at the end of the year and can allow employees to roll remaining funds over to the next plan year.
In contrast, an FSA, has a use-it-or-lose-it rule for balances that exceed the employer’s optional rollover allowance (up to $640) or 75-day grace period.