Yes, an employer can automatically enroll you in a 401(k) without your explicit sign-up, and for most retirement plans set up after December 29, 2022, federal law now requires it. The Pension Protection Act of 2006 first authorized the practice, and the SECURE 2.0 Act made it mandatory for many newer plans.1Federal Register. Automatic Enrollment Requirements Under Section 414A The same laws give you two rights that matter: you can stop future contributions at any time, and if you act within 90 days of your first automatic deduction, you can get that money back.
The Notice You Should Have Received
Before the first contribution comes out of your paycheck, your employer has to give you a written notice. For plans using an eligible or qualified automatic contribution arrangement, that notice must arrive at least 30 days but no more than 90 days before you become eligible to participate, and another notice has to go out each year before the next plan year begins.2U.S. Department of Labor. Automatic Enrollment 401(k) Plans for Small Businesses
There is one important wrinkle. If your employer auto-enrolls new hires immediately, the notice can be delivered on your first day of work rather than a month in advance.3Internal Revenue Service. FAQs Auto Enrollment – When Must an Employer Provide Notice That is how a deduction can appear on your very first paycheck.
The notice should spell out the percentage of your pay that will be contributed, where the money goes if you make no investment choice, your right to change the amount or opt out, and how to reach the plan administrator. You should also get a summary plan description covering the plan’s full terms.
How to Stop Future Contributions
Opting out is straightforward. Contact your plan administrator or log into your company’s benefits portal and change your deferral election to zero. Most employers process the change within one to two pay cycles, so check your next paycheck to confirm the deduction has stopped.
Watch for annual re-enrollment. Some plans automatically sweep opted-out employees back in each plan year. If yours does, you will receive a new notice before the next plan year begins, and you will need to opt out again. Read that annual notice carefully.
Getting Money Back Within 90 Days
If contributions have already come out of your paycheck and you want them back, federal law gives you a narrow window. Under Section 414(w) of the Internal Revenue Code, you can elect what is called a permissible withdrawal no later than 90 days after the date of your first automatic contribution.4Office of the Law Revision Counsel. 26 USC 414 – Definitions and Special Rules The plan has to return everything that was automatically deferred during that period, plus any investment earnings on it. The usual 10 percent early withdrawal penalty does not apply.
There is a cost. Any employer matching contributions tied to the amounts you pull out are forfeited back to the plan.5eCFR. 26 CFR 1.414(w)-1 – Permissible Withdrawals From Eligible Automatic Contribution Arrangements You do not keep the match on money you take back.
The returned amount, including earnings, is included in your gross income for the year you receive it. The plan reports the distribution on Form 1099-R.5eCFR. 26 CFR 1.414(w)-1 – Permissible Withdrawals From Eligible Automatic Contribution Arrangements You still owe regular income tax on pre-tax contributions and their earnings; you just avoid the extra 10 percent penalty.
Miss the 90 days and the money is essentially locked in. You can still stop future contributions, but reaching what is already in the account generally requires meeting standard distribution rules: reaching age 59½, leaving the employer, or qualifying for a hardship withdrawal under your plan.6Internal Revenue Service. Retirement Topics – Exceptions to Tax on Early Distributions
What Happens If You Do Nothing
Silence is a choice the plan makes for you. Under a Qualified Automatic Contribution Arrangement, the default starting rate is 3 percent of pay, rising one percentage point each year until it reaches 6 percent, and the maximum default rate cannot exceed 10 percent.7Internal Revenue Service. Retirement Topics – Automatic Enrollment
Plans that must comply with the newer SECURE 2.0 rules under Section 414A follow a different schedule. The initial default must be at least 3 percent but no more than 10 percent, and that rate has to climb by one percentage point each year until it hits at least 10 percent, with a hard ceiling of 15 percent.1Federal Register. Automatic Enrollment Requirements Under Section 414A The auto-escalation happens without any action on your part. Review your deferral rate each year if you want to keep it at a specific level.
Your money does not sit in cash, either. Without an investment election from you, contributions go into a Qualified Default Investment Alternative. Federal regulations recognize three types:
- A target-date fund that shifts from higher-risk to lower-risk holdings as you approach your expected retirement year.
- A balanced fund holding a mix of stocks and bonds.
- A professionally managed account allocated based on your age, balance, or other factors.
Those defaults are designed to grow your savings rather than park them.8U.S. Department of Labor. Default Investment Alternatives Under Participant-Directed Individual Account Plans You can change your investment selections at any time through the plan’s portal.
When Your Employer Is Not Required to Auto-Enroll You
The SECURE 2.0 mandate does not reach every workplace. Section 414A(c) of the Internal Revenue Code exempts several categories of plans and employers:
- Any 401(k) or 403(b) plan established before December 29, 2022, is grandfathered in.
- Employers that normally have 10 or fewer employees are exempt.
- Businesses in operation for fewer than three years are exempt.
- Government and church plans are excluded.
- SIMPLE 401(k) plans are not subject to the requirement.
An exempt employer can still choose to auto-enroll voluntarily under the older Pension Protection Act framework.1Federal Register. Automatic Enrollment Requirements Under Section 414A If you were auto-enrolled, the exemption does not undo it; it only means your employer was not forced to do it.
Part-Time Workers Can Be Auto-Enrolled Too
Automatic enrollment is not limited to full-time staff. Under SECURE 2.0, long-term part-time workers must be allowed to participate if they complete at least 500 hours of service in each of two consecutive 12-month periods. That threshold dropped from three consecutive years to two for plan years beginning after December 31, 2024.9Federal Register. Long-Term, Part-Time Employee Rules for Cash or Deferred Arrangements Under Section 401(k) You also have to be at least 21 by the end of the qualifying period.
Once eligible, a long-term part-time employee in a plan subject to the auto-enrollment mandate is enrolled under the same default rate and investment rules as full-time workers. If you work part-time and average roughly 10 or more hours a week, you may cross the 500-hour line and should watch for an enrollment notice.