How a SIMPLE IRA Works and Who Can Use One

A SIMPLE IRA is a retirement savings plan for small employers and self-employed people

A SIMPLE IRA is a retirement account that small business owners and self-employed workers can set up for themselves and their employees. It works like a traditional IRA in how money grows tax-deferred, but it has its own contribution limits, employer requirements, and withdrawal rules that differ from standard IRAs or 401(k) plans.

The name stands for Savings Incentive Match Plan for Employees. The "simple" part refers to the paperwork — it requires far less administrative burden than a 401(k), which is why it appeals to businesses with fewer than 100 employees. You do not need to file complex annual forms with the IRS, and you do not need to run nondiscrimination tests to make sure highly paid employees are not getting unfair advantages.

The trade-off is lower contribution limits than a 401(k) and stricter early withdrawal penalties. But for many small business owners, the reduced complexity makes it the practical choice.

Key Takeaways

• A SIMPLE IRA has lower contribution limits than a 401(k) but requires far less paperwork and administrative work from the employer.
• Employers with 100 or fewer employees can set up a SIMPLE IRA, and most must contribute either a 3% match or a 2% nonelective contribution for all employees.
• Withdrawals before age 59½ trigger a 25% penalty during the first two years of the plan, then 10% after that, plus income tax on the full amount.
• You can roll a SIMPLE IRA into a traditional IRA or 401(k), but only after holding it for two years to avoid the higher early withdrawal penalty.

Who can set up a SIMPLE IRA

You can establish a SIMPLE IRA if you are self-employed with no employees, or if you own a business with 100 or fewer employees. The IRS counts all employees, including part-time workers, when determining whether you meet the size requirement. If you cross 100 employees in a given year, you generally have until the end of that year to continue the plan, but you cannot enroll new employees after that point.

If you already sponsor another retirement plan — such as a 401(k), SEP IRA, or pension plan — you cannot set up a SIMPLE IRA. The IRS treats them as mutually exclusive. This rule applies to the entire business, not just one location or division.

Employees do not have to meet any minimum age or service requirement to participate, though employers can require employees to work at least 1,000 hours per year or have been employed for at least two years before they become may be able to access. Most employers waive these restrictions to keep the plan simple.

How contributions work: employer and employee sides

Employees contribute a percentage of their salary to their own SIMPLE IRA account, and the employer must make a matching contribution or a nonelective contribution. The employee contribution is deducted from the employee's paycheck before income tax is calculated, which lowers their taxable income for the year.

The employer has two choices for its contribution:

1. Matching contribution: The employer matches 100% of employee contributions up to 3% of compensation. If an employee contributes 2% of salary, the employer contributes 2%. If the employee contributes 5%, the employer only contributes 3% (the cap). The employer can lower the match to 1% in up to two of every five years, but must notify employees in advance.
2. Nonelective contribution: The employer contributes 2% of compensation for every employee who earns at least $5,000 during the year, whether or not the employee contributes anything. This option requires no employee participation and is simpler for employers who want a predictable cost.

The employer contribution is tax-deductible as a business expense. The employee contribution reduces the employee's taxable wages for the year.

Contribution limits for 2024

Employees can contribute up to $16,000 per year to a SIMPLE IRA in 2024. This limit is set by the IRS and changes annually if inflation warrants an increase. Employees age 50 and older can make an additional catch-up contribution of $3,500 in 2024, bringing their total to $19,500.

The employer contribution (match or nonelective) is separate from the employee limit and does not count against it. So an employee could contribute $16,000 and receive a $3,000 employer match (3% of $100,000 salary) in the same year without exceeding any limit.

These limits apply only to SIMPLE IRAs. If you also have a solo 401(k) or SEP IRA, you cannot contribute to both in the same year — you must choose one plan type.

Tax treatment and how money grows

Money in a SIMPLE IRA grows tax-deferred. You do not pay income tax on investment gains, dividends, or interest while the money sits in the account. You only pay tax when you withdraw the money in retirement.

Employee contributions and employer contributions are both tax-deductible in the year they are made. When you withdraw money in retirement, the entire withdrawal is taxed as ordinary income at your marginal tax rate. If you withdraw money before age 59½, you owe income tax plus an early withdrawal penalty.

Unlike a Roth IRA, there is no option to make after-tax contributions to a SIMPLE IRA. All contributions reduce your current taxable income.

Early withdrawal penalties and the two-year rule

If you withdraw money from a SIMPLE IRA before age 59½, you pay income tax on the full amount plus a penalty. The penalty is unusually steep during the first two years you own the account: 25% of the withdrawal amount. After two years, the penalty drops to the standard 10% early withdrawal penalty.

This two-year rule is one of the biggest differences between a SIMPLE IRA and a traditional IRA. A traditional IRA charges only 10% at any age before 59½. The higher penalty in a SIMPLE IRA is meant to discourage short-term withdrawals from employer-sponsored plans.

The two-year clock starts when you first contribute to the SIMPLE IRA, not when you receive an employer contribution. If you roll money from one SIMPLE IRA to another SIMPLE IRA, the two-year period does not reset — it continues from the original account.

Rolling a SIMPLE IRA to another account

You can roll a SIMPLE IRA into a traditional IRA or a 401(k), but only after you have held the SIMPLE IRA for at least two years. If you roll it out before two years have passed, any withdrawal is subject to the 25% early withdrawal penalty (plus income tax), even if you are rolling it to another retirement account.

After two years, you can roll the balance to a traditional IRA without tax consequences. The money moves directly from the SIMPLE IRA custodian to the new IRA custodian — this is called a direct rollover and avoids any tax withholding or reporting issues.

You cannot roll a SIMPLE IRA into a Roth IRA directly. You would first roll it to a traditional IRA, then convert the traditional IRA to a Roth IRA in a separate transaction. The conversion itself is taxable in the year you perform it.

Setting up and maintaining a SIMPLE IRA

To set up a SIMPLE IRA, you open an account with a bank, brokerage, or other financial institution that offers SIMPLE IRAs. You then file Form 5305-SIMPLE or a prototype plan document with your business records — you do not file it with the IRS, but you must keep it available for inspection. The financial institution usually provides the form or plan document.

You must notify employees of the plan in writing and give them at least 30 days to decide whether to participate. Employees can change their contribution percentage once per calendar year, or more often if the employer allows it. Employers can change their contribution method (match versus nonelective) once per year, but must notify employees at least 30 days in advance.

Unlike a 401(k), you do not file an annual Form 5500 with the Department of Labor. Your only ongoing obligation is to process payroll deductions correctly and make employer contributions on time — typically by the due date of your business tax return, including extensions.

Frequently Asked Questions

Can I have a SIMPLE IRA and a solo 401(k) at the same time?

No. You can sponsor only one type of employer retirement plan per year. If you are self-employed with no employees, you can choose between a SIMPLE IRA and a solo 401(k), but not both. A solo 401(k) allows higher contributions but requires more paperwork.

What happens to my SIMPLE IRA if I leave my job?

Your SIMPLE IRA belongs to you, not your employer. When you leave the job, the account stays in your name and you keep all the money — both your contributions and the employer contributions. You can leave it where it is, roll it to another IRA, or roll it to your new employer's plan if they accept rollovers.

Do I have to take required minimum distributions from a SIMPLE IRA?

Yes. Starting at age 73 (as of 2023, under current law), you must withdraw a minimum amount each year based on your age and account balance. The formula is the same as for traditional IRAs. Failing to take the distribution results in a 25% penalty on the shortfall amount.

Can employees opt out of a SIMPLE IRA?

Yes. Participation is voluntary for employees. They can choose not to contribute, though if the employer uses a nonelective contribution method, the employer still contributes 2% of their salary whether they participate or not. Employees can also stop contributing at any time during the year.

What if my business has seasonal employees?

Seasonal employees count toward the 100-employee limit and must be offered the plan if they work during the plan year. However, you can require employees to work at least 1,000 hours per year to participate, which naturally excludes many seasonal workers. Check with your payroll provider about how they count hours for may be able to access.