A Flexible Spending Account Runs On A Plan Year

A flexible spending arrangement lets an employee set aside pre-tax pay for defined expenses. It is bounded by a plan year in a way that distinguishes it from every other savings account.

The election is made once and binds

The employee chooses an annual amount before the plan year begins, and that amount is deducted in equal portions from each paycheck across the year.

The election generally cannot be changed mid-year except on a qualifying life event defined in the plan, such as marriage, birth or a change in employment.

That inflexibility is the price of the tax treatment, and it means the estimate has to be made before the year's expenses are known.

Health and dependent care versions differ

The health version makes the full annual election available from the start of the plan year, even though contributions have not yet been made.

The dependent care version works the opposite way. Funds are reimbursable only as they are contributed, so early-year expenses may have to wait.

The two also have separate annual limits set under different provisions, and the dependent care limit interacts with tax credits for the same expenses.

Forfeiture and the relief mechanisms

Unused amounts are generally forfeited at the end of the plan year, which is the origin of the phrase describing the arrangement as use it or lose it.

Employers may offer one of two relief provisions on health accounts: a limited carryover of unused funds, or a grace period extending the time to incur expenses.

A plan may offer one or neither, but not both, and the amounts and periods are set in federal rules that are adjusted periodically.

The uniform coverage rule and leaving a job

Because the full health election is available immediately, an employee who spends it and then leaves is generally not required to repay the unfunded portion.

The employer bears that risk, which is the counterpart to the employer keeping forfeited amounts from employees who underspend.

Access after leaving employment typically ends for expenses incurred afterward, though continuation coverage rules can apply in some circumstances.

How it interacts with other accounts

A general purpose health flexible account disqualifies an employee from contributing to a health savings account, since it counts as other coverage.

Limited purpose versions restricted to dental and vision expenses exist specifically to avoid that conflict and can be held alongside one.

Plan terms, limits and eligible expenses are governed by federal rules and by the employer's plan document, both of which change, so the current documents govern.