A 401(k) account is a tax-deferred retirement savings account setup by many employers for their employees in the United States. Employees can elect to contribute part of their earnings - either pre-tax or after-tax - to their 401k account and the employer will often make a matching contribution for a portion of it. The before-tax and/or after-tax contributions are subject to yearly limits set by the IRS. Related to the 403b and Thrift Savings Plan (TSP)

history | excerpt history