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) plans.
Choose a 401(k) Plan
Establish a 401(k) Plan
- Steps to establishing a 401(k) plan
- How to include automatic contribution increases in a plan
- Sample automatic enrollment plan language
- How to establish designated Roth accounts in a 401(k) plan
Participate in a 401(k) Plan
- Contribution limits
- 401(k) topics for participants
- General guidance on participating in your employer’s plan
Operate and Maintain a 401(k) Plan
- Operating a 401(k) plan
- 401(k) topics for plan sponsors
- 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.