A 401(k) is a feature of a qualified profit-sharing plan that allows employees to contribute a portion of their wages to individual accounts. Elective salary deferrals are excluded from the employee’s taxable income (except for designated Roth deferrals). Employers can contribute to employees’ accounts. Distributions, including earnings, are includible in taxable income at retirement (except for qualified distributions of designated Roth accounts). See the 401(k) Resource Guide for details on 401(k) topics for plan participants and plan sponsors. Choose a 401(k) Plan Choosing a 401(k) plan Overview of types of 401(k) plans One-participant 401(k) plans Establish a 401(k) Plan Steps to establishing a 401(k) plan Types of automatic enrollment Automatic enrollment increases and sample plan language How to establish designated Roth accounts in a 401(k) plan Participate in a 401(k) Plan Contribution limits General guidance on participating in your employer’s plan Operate and Maintain a 401(k) Plan Operating a 401(k) plan Mid-year Amendments to Safe Harbor 401(k) Plans and Notices Correct a 401(k) Plan 401(k) Checklist PDF Helps you keep your 401(k) plan in compliance with important tax rules. 401(k) Fix-it Guide Tips on how to find, fix and avoid common errors in 401(k) plans. Terminate a 401(k) Plan Additional resources for 401(k) Plans
