The maximum amount an employee can contribute to a 401(k) plan is set each year.
If you are age 50 or older, you may be allowed to make additional contributions (commonly referred to as catch-up contributions) in addition to annual limit.
The maximum amount applies to an employee's aggregate pre-tax contributions to a 401(k) plan and 403(b) plan.
There are several different limits that apply to a 401(k) plan in addition to the overall contribution limit.
These limits, your salary, and the type of 401(k) plan to which you are contributing may limit your 401(k) contributions to a lesser amount.