Key Takeaways

  • SEP-IRA 2024 limit: Lesser of 25% of compensation or $69,000; employer-only contributions with no catch-up option
  • SIMPLE IRA 2024 employee deferral: $16,000 base + $3,500 catch-up (age 50+) = $19,500 maximum
  • SEP eligibility: 21+ years old, worked 3 of last 5 years, $750+ compensation; deadline is tax filing deadline plus extensions
  • SIMPLE IRA requires employer match (dollar-for-dollar up to 3%) OR 2% non-elective contribution for all eligibles
  • SIMPLE IRA early withdrawals within first 2 years face 25% penalty (not 10%); employer must have 100 or fewer employees
Last updated: January 2026

SEP-IRA & SIMPLE IRA

Both SEP-IRAs and SIMPLE IRAs are designed to provide retirement benefits for small businesses without the administrative complexity of traditional qualified plans like 401(k)s. Understanding the distinctions between these plans is essential for EA exam success and for advising clients on the best retirement vehicle for their situation.


SEP-IRA (Simplified Employee Pension)

A SEP-IRA is an employer-funded retirement plan that allows businesses to make tax-deductible contributions to individual retirement accounts established for employees. It's particularly popular among sole proprietors and small businesses due to its simplicity and high contribution limits.

2024 Contribution Limits

Contribution Type2024 Limit
Maximum contributionLesser of 25% of compensation OR $69,000
Compensation cap for calculations$345,000
Catch-up contributionNone available

Critical Point: Only the employer makes contributions to a SEP-IRA. Employees cannot make elective deferrals. This distinguishes SEP-IRAs from 401(k)s and SIMPLE IRAs.

Self-Employed Contribution Calculation

For self-employed individuals, the contribution calculation is more complex. You cannot simply take 25% of your net self-employment income.

The Self-Employed Formula:

  1. Start with net self-employment income (Schedule C profit)
  2. Subtract 1/2 of self-employment tax (the "adjustment")
  3. Multiply the result by 20% (not 25%)

Why 20% instead of 25%? The contribution itself is a deduction that reduces the compensation base. The math works out to an effective rate of 20% of net earnings after the SE tax adjustment (25% / 125% = 20%).

Example: Sarah has $100,000 net profit from her Schedule C business. Her self-employment tax is $14,130 (calculated on Schedule SE). Her SEP contribution is calculated as:

  • Net profit: $100,000
  • Less 1/2 SE tax: $100,000 - $7,065 = $92,935
  • SEP contribution: $92,935 x 20% = $18,587

Employee Eligibility Requirements

Employers must include all employees who meet all three of these conditions:

RequirementDetails
AgeAt least 21 years old
ServiceWorked for employer in at least 3 of the last 5 years
CompensationEarned at least $750 in 2024

Important: Employers can use less restrictive requirements (e.g., include employees immediately) but cannot be more restrictive than the IRS minimums.

The 3-of-5 rule counts any work performed during a year, regardless of hours. Even a summer job counts as a year of service.

Deadline to Establish and Fund

One of the most attractive features of SEP-IRAs is the generous deadline:

  • Deadline: Tax filing deadline plus extensions for the business
  • For sole proprietors: April 15 (or October 15 with extension) of the following year
  • This allows "last-minute" retirement planning after the tax year ends

Example: For 2024 contributions, a sole proprietor filing an extension has until October 15, 2025 to both establish and fund the SEP-IRA.

SEP-IRA Advantages and Disadvantages

AdvantagesDisadvantages
High contribution limits ($69,000)Must cover all eligible employees
Simple setup and administrationEmployer-only contributions
No annual IRS filing requirementsNo catch-up contributions
Flexible contribution amounts year-to-yearNo Roth option
Can establish after year-endContributions must be uniform % for all

SIMPLE IRA (Savings Incentive Match Plan for Employees)

A SIMPLE IRA is a retirement plan for small employers (100 or fewer employees) that allows both employee salary deferrals and employer contributions. It's "simpler" than a 401(k) but has lower contribution limits.

2024 Contribution Limits

Contribution Type2024 Limit
Employee salary deferral$16,000
Catch-up contribution (age 50+)$3,500
Maximum employee contribution (50+)$19,500
Compensation cap for matching$345,000

SECURE 2.0 Enhancement: Employers with 25 or fewer employees may offer increased limits of $17,600 employee deferral and $3,850 catch-up (10% higher), though most standard plans use the base limits.

Employer Contribution Requirements

Employers must choose one of these two options each year:

Option 1: Matching Contribution

  • Match employee contributions dollar-for-dollar up to 3% of compensation
  • Can reduce to 2% match for 2 of any 5-year period

Option 2: Non-Elective Contribution

  • Contribute 2% of compensation for ALL eligible employees
  • Must contribute regardless of whether employee defers
  • Based on compensation up to $345,000 cap

Example (Matching): Employee earns $60,000 and defers 5% ($3,000). Employer matches dollar-for-dollar up to 3% = $1,800 (3% of $60,000). Total contribution: $4,800.

Example (Non-Elective): Same employee, employer chooses 2% non-elective. Employer contributes $1,200 (2% of $60,000) even if employee defers nothing.

Employer Eligibility Requirements

RequirementDetails
Size100 or fewer employees who earned $5,000+ in prior year
No other plansCannot maintain another qualified retirement plan
TimingMust be established by October 1 for new plans

The "100 Employee" Rule: If employer exceeds 100 employees, may continue SIMPLE for 2 additional years as long as contributions continue.

The 25% Early Withdrawal Penalty

This is a critical EA exam topic. SIMPLE IRAs have a special penalty rule:

Timing of WithdrawalPenalty (under age 59 1/2)
Within first 2 years of participation25% early withdrawal penalty
After 2 yearsStandard 10% early withdrawal penalty

The 2-year period starts on the date of the employee's first contribution to the SIMPLE IRA (which could be employer or employee contributions).

Warning: During the 2-year period, transfers to another retirement plan type (Traditional IRA, 401(k), SEP) are treated as distributions and may trigger the 25% penalty. Only SIMPLE-to-SIMPLE transfers are penalty-free during this period.

SIMPLE IRA Advantages and Disadvantages

AdvantagesDisadvantages
Employees can make own contributionsLower limits than SEP or 401(k)
Required employer contributions25% penalty for early withdrawals in first 2 years
Simple administrationOctober 1 deadline to establish
No annual IRS filing (under 100)Cannot maintain other qualified plans
Catch-up contributions availableMust cover all eligible employees

Comprehensive Comparison: SEP vs. SIMPLE vs. Solo 401(k)

FeatureSEP-IRASIMPLE IRASolo 401(k)
2024 Max Contribution$69,000$19,500 (50+)$69,000 + $7,500 catch-up
Employee ContributionsNoYes ($16,000)Yes ($23,000)
Employer ContributionsUp to 25% of compMatch or 2% non-electiveUp to 25% of comp
Catch-Up (50+)None$3,500$7,500
Roth OptionNoNoYes
Establishment DeadlineTax filing + extensionsOctober 1December 31
Who Can UseAny employer100 or fewer employeesSelf-employed, no employees
Loans AllowedNoNoYes
Annual IRS FilingNoNoYes, if assets > $250,000

Which Plan Should Your Client Choose?

SEP-IRA is Best For:

  • Self-employed individuals with high income wanting maximum contributions
  • Employers who want to contribute for employees but don't want employee deferrals
  • Those who need flexibility in contribution amounts year-to-year
  • Business owners who want to wait until after year-end to decide on contributions

SIMPLE IRA is Best For:

  • Small employers (100 or fewer) who want employees to contribute
  • Businesses wanting lower administrative costs than 401(k)
  • Employers who prefer predictable matching obligations
  • Companies where employees are motivated by ability to defer their own salary

Solo 401(k) is Best For:

  • Self-employed with no employees (except spouse)
  • Those wanting highest contribution limits with catch-up
  • Business owners wanting a Roth option
  • Those who may need to borrow from retirement funds

EA Exam Tips: SEP & SIMPLE IRAs

High-Frequency Test Topics:

  1. SEP contribution calculation for self-employed: Remember the 20% effective rate after SE tax adjustment
  2. SIMPLE 25% penalty: Within first 2 years, penalty is 25%, not 10%
  3. Employer contribution requirements: SEP is employer-only; SIMPLE requires match OR 2% non-elective
  4. Deadlines: SEP can be established by tax deadline + extensions; SIMPLE must be established by October 1
  5. Eligibility: SEP requires 3-of-5 years and $750 compensation; SIMPLE requires $5,000 prior year earnings

Common Exam Traps:

  • Don't confuse SEP's 25% of compensation with the 20% self-employed calculation
  • SIMPLE's catch-up is $3,500, not $7,500 (that's 401(k))
  • SEP has NO catch-up contributions regardless of age
  • The 2-year SIMPLE penalty clock starts with first contribution, not plan establishment

Memory Devices:

  • SEP = Simple Employer-only Plan (employer funds it)
  • SIMPLE = Small employer, IMmediate Participation, Lower limits, Employee deferrals allowed
Test Your Knowledge

Maria is self-employed with $120,000 of net self-employment income after all business deductions. Her self-employment tax is $16,956. What is the maximum she can contribute to her SEP-IRA for 2024?

A
B
C
D
Test Your Knowledge

Tom opened a SIMPLE IRA 18 months ago and received his first employer contribution at that time. He is now 45 years old and wants to withdraw $10,000 to buy a car. What is the early withdrawal penalty?

A
B
C
D
Test Your Knowledge

ABC Company wants to establish a retirement plan for its 50 employees. Which of the following statements is TRUE regarding their options?

A
B
C
D