An Owner Has Two Employers: Coordinate the Personal Salary-Deferral Limit Across Plans

The employee limit follows the person

The ordinary annual elective-deferral limit generally applies to an individual’s combined salary deferrals across applicable retirement plans, rather than separately to each employer. An owner who has a corporate job and a side-business 401(k) should therefore reconcile contributions across both payroll systems before choosing the next deferral. Traditional and designated Roth deferrals count together toward that employee limit. An employer’s willingness to process a contribution does not prove that the employee has remaining personal capacity.

Employer contributions and total annual-addition limits involve separate rules, including aggregation where employers are related. Certain plan types, including governmental section 457(b) arrangements, have different coordination rules. The decision is to identify the plan types and ownership relationships before multiplying headline limits. A second plan can provide useful employer-contribution opportunities without providing an additional ordinary employee-deferral ceiling.

Use a personal deferral ledger

Assume an owner is under age 50 and the applicable ordinary annual employee-deferral limit is $24,500. The owner has already deferred $18,000 through Employer A and wants to defer $10,000 through the owner’s S corporation. The remaining ordinary capacity is $6,500, not $24,500. Deferring the proposed $10,000 would bring total applicable deferrals to $28,000, or $3,500 above the assumed ceiling. Verify the current year’s published limit and any catch-up eligibility before using this illustration for an actual election.

Suppose $4,000 of Employer A’s $18,000 was designated Roth. That does not create an extra $4,000 of traditional capacity; both forms count in the same ordinary personal comparison. A separate employer contribution by the S corporation requires its own compensation, plan, and annual-addition analysis. It should not be inserted into the employee-deferral ledger as though all retirement deposits share one limit. Keep participant deferrals, employer contributions, rollovers, and loan repayments in different columns.

Review excess corrections before the following April

If applicable deferrals exceed the limit, promptly notify the plan administrator and follow its process for distributing excess deferrals and allocable earnings. The general corrective distribution deadline is April 15 following the deferral year, with specific rules governing taxation and reporting. An income-tax return extension does not automatically extend that retirement correction deadline. Leaving an excess uncorrected can produce unfavorable taxation, including potential double taxation, so waiting for a late personal return can be costly.

Do not confuse an individual excess-deferral correction with a plan nondiscrimination refund or an excess annual addition. Those events have different triggers and correction rules. Obtain payroll statements and plan transaction reports showing the contribution year and source. A deposit posted in January may relate to December payroll, while an employer funding deposit can relate to a different plan contribution period. The participant ledger should follow the applicable tax characterization rather than the bank deposit date alone.

If the owner changes jobs in December, request the final payroll contribution total from the former employer before maximizing the new plan. A plan statement may lag the last paycheck, so reconcile payroll deductions with eventual deposits. Keep corrective-distribution earnings separate from the excess principal and obtain the resulting Forms 1099-R. Their tax years can differ, making a single net cash amount insufficient for the personal return and the annual personal-deferral ledger.

Choose the next election using verified remaining capacity

Give each payroll provider an updated estimate of outside deferrals and stop or reduce elections before the personal ceiling is reached. Where privacy is important, the owner can coordinate the amounts directly without disclosing unnecessary compensation details to each employer. Obtain confirmation of the effective payroll date; submitting an election after processing may leave one more deduction in the next check. Reconcile actual deferrals after the final payroll rather than assuming the election produced the expected total.

For multiple businesses the owner controls, provide the plan administrator with the ownership map so related-employer rules are considered for other limits and testing. Do not use separate EINs as proof of separate retirement-plan treatment. The useful outcome is a personal deferral ledger with a known remaining amount, supported employer-contribution calculations, and a correction calendar if something exceeds the limit. Owning a second business changes available planning choices, but it does not ordinarily duplicate the individual’s standard salary-deferral ceiling.