SIMPLE IRA: The Complete Guide (2026)

What Is a SIMPLE IRA?

SIMPLE stands for Savings Incentive Match Plan for Employees. A SIMPLE IRA is a retirement plan designed for small businesses with 100 or fewer employees. It lets employees contribute a portion of their salary, and the employer is required to make a contribution too.

That mandatory employer contribution is the defining feature. With a SEP IRA, the employer can skip contributions any year. With a 401(k), employer matching is optional. With a SIMPLE IRA, the employer must contribute every year. Period.

The trade-off for that simplicity and mandatory support is lower contribution limits than a 401(k) or SEP IRA. A SIMPLE IRA is the retirement plan equivalent of a mid-range option: more than a Traditional IRA, less than a 401(k), and easier to administer than either employer plan.

Who Can Set Up a SIMPLE IRA?

Any employer with 100 or fewer employees who earned at least $5,000 in compensation during the preceding calendar year. That includes sole proprietors, partnerships, LLCs, S corporations, C corporations, and nonprofit organizations. Self-employed individuals can set one up for themselves.

Who Must Be Included?

An employee must be eligible to participate if they meet both of these conditions:

1. Earned at least $5,000 in compensation from the employer during any 2 preceding calendar years
2. Are reasonably expected to earn at least $5,000 in the current year

The employer can set less restrictive requirements (lower compensation, shorter service period). But they can't be more restrictive than the IRS minimums.

Unlike a SEP IRA, where only the employer contributes, a SIMPLE IRA lets employees make their own salary deferrals. Every eligible employee must be given the opportunity to participate.

2026 Contribution Limits

This is where SIMPLE IRAs got complicated. Thanks to SECURE 2.0, the 2026 limits now depend on the size of the employer and the employer's contribution election. There are effectively six different employee deferral limits.

Standard Limits (Employers with 26–100 Employees, Standard Contribution)

Enhanced Limits (Employers with 25 or Fewer Employees, OR Larger Employers Who Make the Higher Contribution)

Why the Catch-Up Limit Is Lower for Small Employers

The catch-up for the enhanced limit ($3,850) is actually lower than the standard catch-up ($4,000). This is a quirk in how cost-of-living adjustments are calculated under the tax code. SECURE 2.0 set the enhanced deferral at 110% of the standard limit, and the catch-up was calculated as a percentage that produced a lower number. Congress will likely fix this eventually.

What Triggers the Enhanced Limits?

For employers with 25 or fewer employees, the enhanced limits apply automatically.

For employers with 26–100 employees, the enhanced limits only apply if the employer elects to make a higher contribution — either matching up to 4% of compensation (instead of 3%) or making a 3% nonelective contribution (instead of 2%). The employer must make this election formally and in writing.

Employer Contribution Options

The employer must contribute every year. There are two formulas to choose from.

Option 1: Matching Contribution (Up to 3%)

The employer matches each employee's salary deferral dollar-for-dollar, up to 3% of the employee's compensation. If an employee earns $60,000 and defers 3% ($1,800), the employer contributes $1,800.

If the employee defers less than 3%, the match only applies to what they actually contributed. If the employee defers nothing, the employer owes nothing.

The reduced match option: The employer can lower the match to as low as 1% of compensation, but only for 2 out of every 5 years. You can't drop below 1%, and you can't do it more than twice in any 5-year window.

Option 2: Nonelective Contribution (2%)

The employer contributes 2% of each eligible employee's compensation, regardless of whether the employee makes their own contribution. This applies to every eligible employee, even those who defer nothing.

Maximum compensation considered for 2026 is $360,000. So the maximum nonelective contribution per employee is $7,200 (2% of $360,000).

SECURE 2.0 Addition: Extra Nonelective Contributions

Starting under SECURE 2.0, employers can make an additional nonelective contribution to each eligible employee in a uniform manner. This additional contribution is capped at the lesser of 10% of compensation or $5,300 for 2026 — on top of the standard match or 2% nonelective contribution.

Which Option Is Better?

The matching contribution rewards employees who participate. The nonelective contribution benefits everyone, including employees who can't afford to defer their own salary. For the employer, the matching contribution is usually cheaper because not all employees will contribute the full 3%.

Traditional and Roth Contributions

How Roth SIMPLE IRA Contributions Work

SIMPLE IRAs were pre-tax only for decades. Under SECURE 2.0, employers can now offer a Roth option for employee salary deferrals. If the plan allows it, employees can designate some or all of their salary deferrals as Roth (after-tax).

The annual limit is the same whether you contribute Traditional, Roth, or a mix of both. For 2026, that's $17,000 (or $18,100 for the enhanced limit), plus applicable catch-up. You can split your deferrals however you want — $10,000 Traditional and $7,000 Roth, all Roth, or all Traditional. The split can change each year.

Employer Contributions Are Always Pre-Tax

Regardless of whether you make Roth deferrals, the employer's matching or nonelective contribution goes into a pre-tax account. The employer match is not converted to Roth just because your deferral was Roth.

You'll have two buckets in your SIMPLE IRA: a Roth bucket for your after-tax deferrals and a Traditional bucket for employer contributions. This means even if you go 100% Roth on your deferrals, part of your SIMPLE IRA balance is still pre-tax money that will be taxed as ordinary income when you withdraw it.

The 5-Year Rule for Roth SIMPLE IRA

Roth SIMPLE IRA withdrawals are tax-free only if the distribution is qualified. Two conditions must be met:

1. The Roth SIMPLE IRA has been open for at least 5 tax years, starting January 1 of the year your first Roth contribution was made.
2. You're at least 59½, disabled, or the distribution is made to a beneficiary after your death.

If both conditions aren't met, the earnings portion of a Roth withdrawal is taxable and may be subject to the 10% penalty if you're under 59½ — or the 25% penalty if you're within the two-year participation period.

The Two-Year Rule Still Applies to Roth

The SIMPLE IRA's two-year penalty rule applies to Roth contributions just like Traditional contributions. During the first two years of participation, you can't roll your Roth SIMPLE IRA to a Roth IRA or any other plan without triggering the 25% penalty on the earnings portion.

After two years, you can roll to a Roth IRA and the funds follow Roth IRA rules from that point.

When Roth Makes Sense in a SIMPLE IRA

Choose Roth when: you expect your tax rate in retirement to be the same or higher than it is now, you're early in your career and your income is likely to grow, or you want tax-free withdrawals in retirement and are willing to skip the upfront deduction.

Choose Traditional when: you're in a high tax bracket now and expect to be in a lower bracket in retirement, or you need the tax deduction today.

Split when: you're not sure which direction tax rates are heading — diversifying between pre-tax and Roth gives you flexibility in retirement to pull from whichever bucket minimizes your tax bill in any given year. Use our free Roth vs. Traditional Comparison Tool to see which mix works for your tax situation.

Custodian Support

The Two-Year Rule

This is the SIMPLE IRA's most dangerous rule. It catches people every year.

The two-year period starts on the date the first contribution is deposited into the SIMPLE IRA — not the date you signed up, not the date the plan was established. The date money first hit the account.

This also affects rollovers. During the first two years, you can only roll SIMPLE IRA funds into another SIMPLE IRA. You cannot roll to a Traditional IRA, a 401(k), or any other retirement plan until the two-year period is over. If you do, the transfer is treated as a distribution and the 25% penalty applies.

After the two-year period, the SIMPLE IRA follows standard Traditional IRA rules. You can roll it to a Traditional IRA, a 401(k), or convert to a Roth IRA. See our Rollover IRA guide for the full rules on direct transfers and the 60-day rollover.

How Withdrawals Work

Other than the two-year rule, SIMPLE IRAs follow the same withdrawal rules as Traditional IRAs.

Before 59½ (after the two-year period): Withdrawals are taxed as ordinary income plus a 10% early withdrawal penalty, unless an exception applies. Same exceptions as Traditional IRAs: disability, first-time home purchase, SEPP, education expenses, etc.

Before 59½ (during the two-year period): Same as above, except the penalty is 25% instead of 10%.

After 59½: No penalty. Withdrawals are taxed as ordinary income.

RMDs start at 73 (or 75 if born in 1960 or later). For those born in 1959, the RMD age is 73 per IRS clarification of the SECURE 2.0 drafting error.

Deadlines

Plan Establishment

A SIMPLE IRA plan must generally be set up between January 1 and October 1 of the year it takes effect. If you're a new employer that comes into existence after October 1, you can set it up as soon as administratively feasible.

Employee Salary Deferrals

Employers must deposit employee salary deferrals into the SIMPLE IRA within 30 days after the end of the month in which the employee would have received the compensation in cash. Most SIMPLE IRA plans qualify for the 7-business-day safe harbor.

Employer Contributions

Matching or nonelective contributions must be made by the employer's tax filing deadline (including extensions) for the year.

Annual Notice

The employer must provide each eligible employee with a notice at least 60 days before the beginning of each plan year — typically by November 2 for a calendar-year plan. The notice must describe the employee's right to make or change salary deferral elections and the employer's contribution formula.

SIMPLE IRA vs. Other Plans

SIMPLE IRA vs. SEP IRA

The SEP is employer-funded only. Higher contribution ceiling ($72,000 vs. ~$17,000–$18,100 in employee deferrals). But no employee deferrals, and the employer must contribute the same percentage for every eligible employee.

The SIMPLE allows employee salary deferrals. Lower overall ceiling. The employer's mandatory contribution is capped at 3% match or 2% nonelective, which is much cheaper than funding a 25% SEP contribution for all employees.

Choose SEP when: You're solo or have very few employees and want to maximize your own contribution.

Choose SIMPLE when: You have employees and want them to contribute their own money while keeping employer costs predictable.

SIMPLE IRA vs. 401(k)

The 401(k) has higher contribution limits ($24,500 vs. $17,000), more flexibility in plan design, optional employer matching, and Roth options with broader support. It also requires nondiscrimination testing, Form 5500 filing, and higher administration costs.

The SIMPLE IRA is cheaper and easier to run. No Form 5500 filing. No nondiscrimination testing. Minimal administration. But lower limits and less flexibility.

Choose 401(k) when: You want higher contribution limits, a vesting schedule for employer contributions, or custom plan design.

Choose SIMPLE when: You want the simplest and cheapest employer retirement plan that still lets employees participate.

Setting Up a SIMPLE IRA

1. Choose a financial institution to serve as trustee/custodian for the SIMPLE IRA accounts.
2. Execute a plan document. Use IRS Form 5304-SIMPLE (employees choose the financial institution) or Form 5305-SIMPLE (employer chooses the financial institution). Keep this on file — you don't file it with the IRS.
3. Provide the annual notice to each eligible employee at least 60 days before the plan year begins. The notice must describe the employer's contribution formula and the employee's right to make salary deferrals.
4. Set up individual SIMPLE IRA accounts for each participating employee.
5. Begin salary deferrals and deposit them on time.

No Form 5500 filing required. No annual compliance testing. That's the simplicity.

Common Mistakes

Ignoring the Two-Year Penalty

Rolling SIMPLE IRA funds to a Traditional IRA or 401(k) within the first two years of participation triggers a 25% penalty. This is the single most expensive mistake SIMPLE IRA participants make. Wait until the two-year period is over.

Missing the October 1 Setup Deadline

Unlike a SEP (tax filing deadline) or a Solo 401(k) (December 31), a SIMPLE IRA must generally be established by October 1 of the year it takes effect. Miss that date and you're waiting until next year.

Not Providing the Annual Notice

The employer must provide a notice to all eligible employees at least 60 days before each plan year. Failing to provide it is a plan compliance violation. If you're correcting this, the IRS has a procedure through its Employee Plans Compliance Resolution System (EPCRS).

Late Deposits of Employee Deferrals

Employee salary deferrals must be deposited within 30 days after the end of the month (or within the 7-business-day safe harbor for smaller plans). Late deposits are a prohibited transaction under ERISA and can trigger penalties and excise taxes.

Contributing to Both a SIMPLE IRA and Another Plan

You can't maintain a SIMPLE IRA and a 401(k) or SEP for the same employees in the same year. If you do, the SIMPLE IRA may be disqualified.

Confusing the Enhanced Limits

The enhanced deferral limit ($18,100) only applies to employers with 25 or fewer employees, or larger employers who elected the higher contribution. If you're a larger employer on the standard contribution, the limit is $17,000. Contributing $18,100 when you're only eligible for $17,000 is an excess deferral.

Not Offering Participation to All Eligible Employees

Every employee who meets the eligibility requirements must be given the opportunity to participate. You can't selectively exclude employees who meet the criteria.

FAQ

Related Knowledge Blasts

Short, plain-English breakdowns of the rules behind this guide:

The Two-Year Problem →

SIMPLE IRA Deadlines That Business Owners Miss Every Year →

SEP IRA vs. SIMPLE IRA: Two Great Plans We Overthink Every Day →

Catch-Up Contributions in 2025 — Ages 50+ and the New 60-63 Rule →

The Roth vs. Traditional Debate →

Contribution Limits vs. Income Limits vs. Compensation Limits →