If you have reached age 50 or will reach 50 during the calendar year January 1 - December 31 and are making the maximum plan or IRS pretax contribution, you may make an additional "catch-up" contribution each pay period. The maximum annual catch-up contribution is $5,500. Going forward, catch-up contribution limits will be subject to cost-of-living adjustments (COLAs) in $500 increments. Your employer does not match your catch-up contributions.
See the 403(b) section of our website for more details about the plan.