SIMPLE IRA Plan Rules

A SIMPLE IRA is a retirement plan for small businesses (≤100 employees). Employees contribute up to $17,000 in 2026 ($18,100 under the SECURE 2.0 §117 enhanced election), with $4,000 age-50 catch-up ($5,250 at ages 60–63). Employers either match up to 3% of compensation or contribute 2% non-elective. Withdrawals in the first two years carry a 25% penalty (not 10%) — the SIMPLE-specific 2-year rule.

What Is a SIMPLE IRA?

A SIMPLE IRA is a small-business retirement plan that allows both employee deferrals and mandatory employer contributions. Unlike a 401(k), there's no non-discrimination testing, no complex compliance, and minimal administrative burden. Employees contribute pre-tax dollars (reducing current taxable income), and the employer matches or contributes non-elective amounts. Funds grow tax-deferred until withdrawal in retirement.

The account is technically an IRA held at a financial institution (bank, brokerage). Each employee owns their SIMPLE IRA directly, unlike a 401(k) which is typically held by the employer. This means employees can generally access their own accounts directly and control investment selections, though employers set up the plan structure.

Employee Contribution Limits for 2026

Employees can defer up to $17,000 in 2026 under the standard SIMPLE IRA limit (IRS Notice 2025-67). For employees 50+, there's an additional $4,000 age-50 catch-up (up from $3,500 in 2025 per IRS Notice 2025-67), bringing the total to $21,000. A higher "enhanced" salary-reduction limit of $18,100 applies to SIMPLE accounts that meet the SECURE 2.0 §117 election (employers with ≤25 employees, or larger employers who opt in and add at least a 4% match or 3% non-elective), with a matching $4,000 catch-up — $22,100 at age 50+. Employees aged 60–63 in either track get a higher super-catch-up of $5,250 (SECURE 2.0 §109).

The contribution is deducted from gross compensation. If an employee earns $40,000 and contributes $17,000, their taxable income for the year is $23,000 (before other deductions and exemptions). This provides immediate tax relief.

Employer Matching and Contribution Requirements

Employers have two options: (1) match employee contributions dollar-for-dollar up to 3% of compensation (the employer can elect 1-3%), or (2) contribute 2% non-electively for all eligible employees regardless of whether they contribute.

Example matching: If an employee earns $50,000 and contributes $5,000 (10%), the employer matches 3% × $50,000 = $1,500. The employee's total contribution is $6,500 ($5,000 + $1,500).

Example non-elective: If the employer chooses the 2% non-elective option, every eligible employee receives 2% × their compensation regardless of personal contributions. This provides a floor of retirement savings even for employees who don't contribute themselves.

The 2-Year Withdrawal Penalty: The SIMPLE IRA Trap

Here's the critical difference from other IRAs: withdrawals from a SIMPLE IRA within 2 years of the participant's first SIMPLE contribution are subject to a 25% penalty, not the standard 10%. After the two-year period ends, penalties drop to 10%, and the account functions like a standard IRA.

This two-year clock runs from the date of the participant's first contribution (IRC §72(t)(6)), not the end of a calendar year. If your first SIMPLE contribution was on January 15, 2026, the two-year period ends on January 15, 2028. Any withdrawal in 2026 or 2027 triggers the 25% penalty. A withdrawal in 2028 or later is subject to the standard 10% early penalty if applicable.

The IRS intends this penalty to discourage short-term access. It's the trade-off for SIMPLE IRA's simplicity and lower employer administrative burden.

Converting SIMPLE IRA to Roth: The Two-Year Waiting Period

You cannot directly convert a SIMPLE IRA to a Roth IRA while it's still a SIMPLE IRA (while the employer plan is active). The 2-year period runs from the date of the participant's first contribution to the SIMPLE, NOT from plan termination. If a participant's 2-year clock (measured from first SIMPLE contribution) has already expired, they can convert or roll out to a non-SIMPLE IRA immediately upon plan termination without triggering the 25% penalty. If their 2-year clock has not yet expired, the 25% penalty on any rollover/conversion out of the SIMPLE applies until the 2-year mark from first contribution is reached.

After the two-year wait ends, you can convert a SIMPLE IRA to a Roth IRA like any other Traditional IRA conversion. The standard pro-rata rule applies: if you have other Traditional IRAs, the conversion is proportionally taxed based on your total pre-tax and after-tax IRA balances.

SIMPLE IRA vs. Roth SIMPLE IRA (SECURE 2.0)

Starting in 2023, employers can offer a Roth SIMPLE IRA option. Employees can choose to make contributions on an after-tax (Roth) basis instead of pre-tax. The contribution limits are the same ($17,000 for 2026 standard, $18,100 for enhanced-election plans; add $4,000 age-50 catch-up or $5,250 super-catch-up at ages 60–63), but the tax treatment differs. Roth contributions provide no immediate deduction but grow tax-free and allow tax-free withdrawals in retirement.

Employer matching still occurs on a pre-tax basis even if the employee elects Roth contributions. This provides a powerful benefit: employees get employer matching in pre-tax dollars, then can contribute their own salary deferrals after-tax to the Roth side. Withdrawals of employer matches are taxable; withdrawals of employee Roth contributions are tax-free.

SECURE 2.0 §601 and §117: the Roth SIMPLE Revolution

Two SECURE 2.0 provisions together transformed the SIMPLE IRA landscape. §601 (effective 2023) permitted employees to designate SIMPLE IRA contributions as Roth. §117 (effective 2024) raised SIMPLE contribution limits by 10% for employers with 25 or fewer employees, and permitted employers with 26–100 employees to elect the higher limits if they pay a higher matching contribution. For 2026, the enhanced SIMPLE employee deferral for small employers is $18,100 (vs. $17,000 for the standard limit), with catch-ups proportionally adjusted.

The Roth SIMPLE deferral is the more transformative of the two. Before 2023, SIMPLE IRA contributions were always pre-tax, meaning a small-business employee in a high bracket (e.g., a $200,000-earning principal at a small law firm) could save $17,000 pre-tax but had no mechanism for Roth savings through the plan. Now the same employee can direct that $17,000 into a Roth SIMPLE, paying tax in year one but growing it tax-free for 30+ years.

One important limitation: the Roth SIMPLE employer match is optional and, as of early 2026, the majority of custodians (American Funds, Vanguard SIMPLE, Fidelity SIMPLE) still haven't implemented Roth match despite the statutory authorization. Employees can elect Roth treatment for their own deferrals but typically receive pre-tax match regardless. This is an issue of plan-document and recordkeeper implementation, not a statutory block; expect broader availability through 2027.

SECURE 2.0 §107: SIMPLE-to-401(k) Mid-Year Termination

Before SECURE 2.0, once an employer adopted a SIMPLE IRA for the year, they could not terminate it mid-year to adopt a more favorable plan. This locked growing small businesses into SIMPLE plans that had become inadequate for the employer match capacity of a 401(k). SECURE 2.0 §107 permits mid-year termination of a SIMPLE IRA and adoption of a safe-harbor 401(k) or Roth 401(k) plan, provided the 401(k) accepts rollovers from the terminated SIMPLE and the SIMPLE's 2-year penalty clock carries over.

The 2-year penalty survives the termination: a SIMPLE participant who rolls over to a 401(k) in year 1 of the SIMPLE plan, then distributes from the 401(k) before completing 2 years from the original SIMPLE participation, is still subject to the 25% penalty. This is an important nuance many small-business owners miss when upgrading plans. The clock runs from the first contribution to the SIMPLE, not from the rollover date.

The Exclusive Plan Rule: Why Owners Often Skip the Backdoor

IRC §408(p)(2)(D) imposes an "exclusive plan" requirement: an employer offering a SIMPLE IRA generally cannot maintain any other qualified plan in the same year. This means small-business owners who sponsor a SIMPLE for their employees cannot simultaneously sponsor a solo 401(k) for themselves. The owner is limited to the SIMPLE IRA contribution for the year.

This interacts painfully with the backdoor Roth. The owner's SIMPLE IRA balance aggregates with any Traditional IRAs for pro-rata purposes (IRC §408(d)(2)(B) includes SIMPLEs in the aggregation group). An owner who accumulates $100,000 in a SIMPLE IRA over 6 years cannot then cleanly execute a backdoor Roth because the SIMPLE balance torpedoes the pro-rata ratio. The workaround is unsatisfying: either terminate the SIMPLE (and move to a 401(k)), convert the entire SIMPLE to Roth (paying substantial tax), or forgo the backdoor entirely.

For owners whose SIMPLE IRA has grown into a pro-rata problem, SECURE 2.0 §107 (mid-year termination) is the cleanest exit ramp: move to a 401(k), roll the SIMPLE into the 401(k), and resume clean backdoor Roths. The 401(k) fee structure (typically $1,000–$2,000/year of admin vs. zero for SIMPLE) is the cost to unlock the backdoor, but for high-earner owners it's easily recouped in the first year of freed-up Roth contributions.

The 3% Match Ceiling Can Be Reduced to 1% for Two of Any Five Years

SIMPLE IRA matching is traditionally described as "3% of salary, up to 3% dollar-for-dollar match, mandatory." This is an oversimplification. IRC §408(p)(2)(C)(ii) allows an employer to reduce the match to as low as 1% of compensation in 2 out of any 5 consecutive years. The reduction must be announced before the start of the employee's election period (typically 60 days before the calendar year). This is a legitimate cost-cutting tool for struggling small businesses and is invisible in most descriptions of SIMPLE plans.

For employees at small businesses, understanding this rule matters: in a year of employer financial stress, your 3% match can drop to 1%, effectively cutting your total compensation. Review the annual notice your employer is required to provide (usually in November) before making elections. If the match is reduced, you may want to redirect savings to an outside Roth IRA to maintain total retirement savings.