The SIMPLE IRA vs 401(k) debate is one of the most important decisions for small business owners navigating state retirement mandates. Both plans satisfy state mandate requirements and provide an exemption certificate, but they differ significantly in cost, contribution limits, and administrative burden.
SIMPLE IRA: Overview
A SIMPLE IRA (Savings Incentive Match Plan for Employees) is designed specifically for small businesses with 100 or fewer employees. Key features:
- 2026 employee contribution limit: $16,500 (plus $3,500 catch-up for 50+)
- Required employer contribution: Either 2% non-elective for all eligible employees, or 3% matching contribution for participating employees
- Setup cost: Typically $0–$500 (very low)
- Annual admin: Minimal — no IRS Form 5500 filing required
- Establishment deadline: Must be set up by October 1 of the year it goes into effect
401(k): Overview
A traditional 401(k) is the most flexible small business retirement plan, though it comes with more administrative requirements:
- 2026 employee contribution limit: $23,500 (plus $7,500 catch-up for 50+)
- Employer contribution: Fully optional, but must pass non-discrimination testing
- Setup cost: $500–$2,000 (flat-fee options available)
- Annual admin: Moderate — IRS Form 5500 required, annual testing
- Establishment deadline: Must be set up by December 31 of the plan year
- SECURE 2.0 credits: Up to $15,000 over 3 years (SIMPLE IRA also qualifies)
SIMPLE IRA vs 401(k): Side-by-Side Comparison
| Feature | SIMPLE IRA | 401(k) |
|---|---|---|
| 2026 Employee Limit | $16,500 | $23,500 |
| Employer Match Required? | Yes (2% or 3%) | No (optional) |
| Setup Cost | $0–$500 | $500–$2,000 |
| Admin Complexity | Low | Moderate |
| IRS Form 5500 Required? | No | Yes |
| SECURE 2.0 Credits | Yes (up to $15,000) | Yes (up to $15,000) |
| Satisfies State Mandates? | YES | YES |
| Best For | 5–30 employees, budget-conscious | 10+ employees, owner tax planning |
Which Plan Satisfies State Retirement Mandates?
Both a SIMPLE IRA and a 401(k) are qualifying plans that satisfy state retirement mandates in California (CalSavers), New York (NY Secure Choice), New Jersey (RetireReady NJ), Illinois (Illinois Secure Choice), and other states. With either plan, you must file a Certificate of Exemption through your state’s portal.
Recommendation by Company Size
- 5–15 employees: SIMPLE IRA is often the best starting point — low cost, minimal admin, satisfies all state mandates.
- 15–50 employees: Consider upgrading to a 401(k) for higher employee contribution limits and optional employer match flexibility.
- 50+ employees: A 401(k) is strongly recommended for the flexibility, contribution limits, and competitive benefits it provides.
🔗 Already have a plan? See: Already Have a Retirement Plan?
