A SIMPLE IRA (Savings Incentive Match Plan for Employees) is a retirement plan many small businesses use instead of a full 401(k). Employees defer salary into an IRA-based account at a provider such as Fidelity, Schwab, Vanguard, or the payroll vendor’s partner. Employers must add either a match or a nonelective contribution. Limits and deadlines change by tax year—confirm figures with IRS Publication 560 / current IRS SIMPLE IRA pages before you decide.
Side-income sole props often compare a SIMPLE to a SEP IRA for side income. W-2 vs contractor framing: W-2 vs 1099 tax basics. Broader Roth vs workplace starter: Roth IRA vs 401(k) starter.
Who can sponsor a SIMPLE
| Rule of thumb | Usually fits | Usually look elsewhere |
|---|---|---|
| Employer size | Businesses with 100 or fewer employees who earned at least $5,000 in the prior year (IRS headcount rules apply) | Larger firms often use a 401(k) |
| Other plans | Generally cannot also maintain another qualified plan in the same year (exceptions exist—verify) | Complex multi-plan shops |
| Solo freelancer with no employees | Possible in some setups, but SEP or solo 401(k) is often simpler | Run numbers both ways |
| Employees | Must notify and allow eligible employees to participate | Excluding eligible staff breaks the plan |
Eligible employees typically include those who earned at least $5,000 in any two prior years and are reasonably expected to earn $5,000 this year (plan documents can be less restrictive). Self-employment tax still applies on net earnings if you are the owner on Schedule C: Self-employment tax basics.
Employee deferrals vs employer money
In plain terms (verify the year’s dollar caps):
- Employee elective deferrals — salary reduction contributions up to the IRS SIMPLE IRA deferral limit (lower than a 401(k) deferral limit; catch-up contributions may apply at age 50+ / higher ages when law allows).
- Employer required contribution — usually one of:
- Dollar-for-dollar match up to 3% of compensation (employers can elect a lower match in some years under IRS rules, with notice), or
- Nonelective 2% of compensation for each eligible employee (whether or not the employee defers).
- Contributions go into each participant’s SIMPLE IRA; investments sit inside that IRA chassis.
Employee deferrals are generally pre-tax (Roth SIMPLE contributions exist under newer rules when the plan allows—confirm with the document). Traditional IRA deduction phaseouts are a separate topic: Traditional IRA deduction phaseouts. Lower-income savers may also check the Saver’s Credit.
Worked example: 3% match at a 12-person shop
Mina’s employer offers a SIMPLE IRA at Schwab with a 3% match. Mina earns $60,000 and defers $6,000 for the year. The employer match is 3% × $60,000 = $1,800. Total added to Mina’s SIMPLE IRA: $7,800 before investment returns. If Mina deferred $0, a 3% match plan would typically contribute $0 match (contrast a 2% nonelective plan, which would still fund 2% × pay). Mina keeps paycheck withholding high enough for tax and avoids treating the match as “free cash” to spend.
SIMPLE vs SEP vs 401(k) (consumer view)
| Feature | SIMPLE IRA | SEP IRA | Many 401(k)s |
|---|---|---|---|
| Employee deferrals | Yes | No (employer-only funding) | Yes, usually higher limit |
| Employer must contribute | Yes (match or 2% nonelective) | Optional each year up to limit | Match optional |
| Admin burden | Relatively light | Very light for solo | Heavier |
| Early withdrawal | 25% penalty possible in first 2 years of participation (then usual IRA rules)—read the plan | Usual IRA early-distribution rules | 401(k) rules |
Owners with only side profit and no staff often prefer SEP math—or a solo 401(k) when they want employee + employer contribution sides; shops that want employee deferrals plus a mandated employer layer often land on SIMPLE. Confirm deadlines: employee deferrals follow payroll; employer contributions and setup notices have IRS timing rules.
Checklist
- Confirm headcount and “other plan” rules before adopting a SIMPLE.
- Read whether the employer uses a 3% match or 2% nonelective formula.
- Defer enough to capture the full match if you can keep an emergency fund intact.
- Open / designate the SIMPLE IRA at the provider the employer named; invest intentionally inside it.
- Compare SEP vs SIMPLE vs 401(k) with current IRS limits—not blog year screenshots.
- Watch the two-year early-withdrawal rule before raiding the account.
Employee deferral deposit timing vs employer match deadlines: SIMPLE IRA contribution deadline basics.
Educational only. Not tax, legal, or investment advice. Contribution limits, Roth SIMPLE features, and deadlines change by tax year—verify with IRS publications, the plan document, or a qualified tax professional.