Eligible former and part-time employees still count
A SEP contribution must follow the arrangement's eligibility and allocation rules. An employee who satisfies those rules is not automatically excluded because the employee left before year-end, works seasonally, or has a modest schedule. An owner should therefore use the full year's employee census before funding only the founder's SEP IRA. A typical SEP permits eligibility conditions within statutory limits, including age, compensation, and service in prior years, but the signed document may be more generous. Review the actual terms. If an eligible employee was omitted while other participants received contributions, correction generally requires the missing employer contribution with earnings under a supported method. A SEP is not simply a collection of discretionary owner IRAs. Choosing to fund the owner's benefit can create required funding for all eligible employees under the adopted formula.
Use the employee’s actual compensation and allocation rate
Assume the business makes a 10% SEP allocation for eligible employees and an overlooked employee earned $40,000 of relevant compensation before leaving in August. If that employee meets the plan's eligibility conditions, the illustrative missing contribution is $4,000. Suppose the supported earnings adjustment is $160; the correction would require $4,160 under those assumptions. The owner cannot reduce the employee's contribution to zero by noting that no wages were paid in December. Nor should the company use the owner's self-employed contribution percentage as if it were the employee formula without performing the required self-employed adjustment. Actual compensation definitions, limits, service history, and correction rules determine the amount. This example isolates an omitted employee rather than an excess contribution or a failure to establish the arrangement. Those other errors can require different remedies.
Rebuild the census from payroll history
Obtain every worker's age, annual compensation, hire and termination dates, and service during the relevant lookback period. Review part-time and seasonal records as well as current full-time staff. Compare each person's facts with the signed SEP document rather than a generic brochure. Determine whether a former employee already has a SEP IRA or needs an account established to receive correction. Keep contact and delivery records without assuming a person who moved forfeited eligibility. Review related businesses and any employee exclusions under the actual rules. If the business switched from another plan, verify which year and arrangement govern the compensation. The contribution schedule should show eligibility, compensation, rate, amount owed, amount deposited, and variance for every employee. A custodian statement showing the owner's deposit does not establish that the company's SEP allocation was complete.
Complete correction before treating the funding year as closed
Identify the permitted correction route, earnings period, required notices, and tax reporting with the administrator or preparer. Deposit correction to the correct participant's account and retain confirmation. Do not pay the employee a taxable cash bonus and assume it substitutes for a required SEP contribution. Review whether the error affected multiple years and whether similar former employees were omitted. Reconcile company deductions and participant records using the applicable correction treatment rather than forcing every deposit into the current-year ordinary allocation. Add an annual eligibility review before the owner approves SEP funding and a final reconciliation before filing. The practical result is a complete employee obligation budget attached to the owner's retirement contribution. This prevents a low-cost owner funding illustration from omitting real benefits owed to people who helped earn the year's profit but were no longer on the payroll when the contribution was made.
Separate missing contributions from excess owner funding
Review whether the owner’s allocation itself was correct, including compensation, percentage, annual limit, and self-employed adjustment. Funding an omitted employee does not cure an unrelated owner excess. Conversely, a correct owner contribution does not justify leaving the employee unfunded. Keep each error in its own calculation and determine whether prior deductions or individual reporting require adjustment. A change in the workforce can make the cost of repeating the same allocation materially different next year. Before approving another ten-percent contribution, show the owner a complete census-based funding estimate, including former workers who earned eligibility and current workers likely to qualify. This turns a correction into a better annual decision process without assuming that reducing future benefits retroactively changes amounts already owed under the original year’s arrangement.
Sources & further reading
Consult the original guidance and its effective dates. These references support the educational discussion; their application depends on the specific facts.