If your employer offers a 401(k) plan, contributing to it is a smart way to build a nice nest egg. Consider increasing the amount in 2025 if you’re not already contributing the maximum allowed. With a 401(k), an employee elects to have a certain amount of pay deferred and contributed to a plan by an employer on his or her behalf. The 2025 contribution limit is $23,500. Employees age 50 or older by year end are also generally permitted to make additional catch-up contributions of $7,500. However, under a law change that becomes effective in 2025, 401(k) plan participants of certain ages can save more. The catch-up contribution amount for those who are age 60, 61, 62 or 63 in 2025 is $11,250.