Can I change the amount of money I elect to set aside in my account(s) at any time during the plan year?
IRS regulations require you to make elections for an entire plan year. But if you have change in family status, such as change in your spouse’s employment, the birth of a child, adoption, or a change in marital status you may change your election mid-year. Otherwise, an election may only be changed for the next year. You’ll be able to make changes by enrolling in your Employer’s plan during the designated open enrollment period. Check with your employer or refer to your plan document.
