IRS Publication 4336 – IRS Forms, Instructions, Pubs 2026 – In today’s competitive job market, offering robust retirement benefits can help small businesses attract and retain top talent. One such option is the Salary Reduction Simplified Employee Pension (SARSEP) plan, detailed in IRS Publication 4336. This publication serves as a key resource for small business owners looking to understand and maintain this tax-advantaged retirement plan. Although new SARSEPs cannot be established after 1996, existing plans continue to provide valuable benefits for eligible employers and employees. In this article, we’ll explore the essentials of SARSEP plans, including eligibility, contributions, benefits, and updated limits for 2026, drawing from official IRS guidance to ensure accuracy and relevance.
What Is a SARSEP Plan?
A SARSEP is a type of Simplified Employee Pension (SEP) plan that was established before 1997 and allows employees to contribute to their retirement through salary reductions, also known as elective deferrals. It’s designed specifically for small businesses, offering a simpler alternative to more complex retirement plans like 401(k)s. Under a SARSEP, contributions are made to traditional Individual Retirement Accounts (SEP-IRAs) for each eligible employee, providing tax-deferred growth until distributions begin.
SARSEPs were popular for their ease of administration and tax benefits, but they were prospectively repealed by the Small Business Job Protection Act of 1996. While no new plans can be set up, those created before January 1, 1997, can still operate, and new hires can participate. This makes IRS Publication 4336 an essential reference for ongoing compliance, covering everything from plan features to operational rules.
Eligibility Requirements for SARSEP Participation
To participate in a SARSEP, employees must meet specific criteria outlined in the publication. Eligible employees are those who are at least 21 years old and have performed services for the employer in at least three of the immediately preceding five years. Service is broadly defined and includes any work, no matter how brief. Employers can set less restrictive rules but cannot impose stricter ones.
Certain employees are excluded, such as those covered by a collective bargaining agreement where retirement benefits were negotiated in good faith, nonresident aliens without U.S.-sourced income, and those earning less than a specified minimum compensation (adjusted for inflation). For self-employed individuals, they count as both employer and employee, and eligibility extends to affiliated groups or businesses under common control.
A key ongoing requirement is the 25-employee limit: Deferrals are not allowed if the plan had more than 25 eligible employees in the prior year. Additionally, at least 50% of eligible employees must elect to make deferrals each year, or all deferrals become disallowed.
Contribution Rules and 2026 Limits
SARSEPs allow for both employee elective deferrals and employer nonelective contributions, with strict limits to ensure fairness and compliance.
- Employee Elective Deferrals: Employees can defer up to the lesser of 25% of their compensation or $24,500 in 2026. Catch-up contributions are available: $8,000 for those aged 50 and over, or $11,250 for those aged 60-63. Excess deferrals must be withdrawn by April 15 of the following year to avoid penalties.
- Employer Contributions: These are optional but must be uniform and nondiscriminatory. The overall limit for combined contributions is the lesser of 25% of compensation or $72,000 in 2026. Compensation is capped at $360,000 for limit calculations.
- Nondiscrimination Tests: The plan must pass the Deferral Percentage (DP) test, limiting highly compensated employees (HCEs, defined as those earning over $160,000 in 2026) to no more than 1.25 times the average deferral rate of non-HCEs. Top-heavy plans (where more than 60% of benefits go to key employees, such as officers earning over $235,000) require a minimum 3% contribution to non-key employees.
Contributions must be deposited promptly: Employee deferrals within 15 days of the month withheld (or sooner under safe harbor rules), and employer contributions by the tax return due date, including extensions.
Benefits of Implementing a SARSEP Plan
SARSEPs offer significant advantages for both employers and employees. For small businesses, the plan is straightforward to administer with no annual government filings required beyond standard tax forms. Employer contributions are tax-deductible, and all funds are immediately 100% vested, meaning employees own their accounts fully from day one.
Employees benefit from tax-deferred growth, reducing current taxable income through deferrals. Withdrawals are flexible but subject to income tax and a 10% early withdrawal penalty before age 59½ (with exceptions). Required minimum distributions begin at age 73, aligning with current IRA rules.
Compared to other small business retirement options like SIMPLE IRAs, SARSEPs provide higher contribution limits but require more compliance testing.
How to Set Up and Operate a SARSEP Plan?
Although new SARSEPs can’t be established, maintaining an existing one involves using a written plan document, such as IRS Form 5305A-SEP. Employers must set up SEP-IRAs for each eligible employee through a qualified financial institution and provide plan information to participants.
Operations include annual notifications, amending the plan for law changes, and ensuring compliance with tests like the 50% participation rule. If issues arise, the Employee Plans Compliance Resolution System (EPCRS) allows for corrections, often without penalties for minor errors.
Tax Implications for Employers and Employees
Employers deduct contributions on their business tax return, treating them as business expenses. Employee deferrals are subject to Social Security, Medicare, and FUTA taxes but not income tax withholding.
For employees, distributions are taxed as ordinary income, with rollovers to other IRAs or plans allowing continued tax deferral. Roth conversions are possible but taxable in the year of conversion.
Recent Updates and Resources for SARSEP Plans
IRS Publication 4336 was last revised in December 2017, but contribution limits are adjusted annually for cost-of-living changes. For 2026, key updates include the elective deferral increase to $24,500 and the defined contribution limit to $72,000, as detailed in IRS Notice 2025-67.
Small business owners should consult related IRS resources, such as Publication 560 (Retirement Plans for Small Business) and the SARSEP Fix-It Guide. For assistance, contact the IRS at 877-829-5500 or visit www.irs.gov/retirement.
In summary, IRS Publication 4336 remains a vital tool for managing SARSEP plans, helping small businesses navigate retirement benefits effectively. While these plans are grandfathered, their tax advantages make them worthwhile for qualifying employers. Always consult a tax professional to ensure your plan complies with the latest rules and maximizes benefits.