Employer payment of employee tax is another benefit

When an ordinary corporate employer pays an employee's share of Social Security and Medicare taxes without deducting those amounts from pay, the employer-paid amounts generally become additional wages. Those additional wages can themselves create employee taxes, requiring a gross-up rather than a single reimbursement. A founder receiving a taxable noncash benefit should therefore decide how payroll will collect the employee taxes before the final paycheck. The employer's own payroll tax is a separate company expense. Different rules can apply to household or agricultural employment, so use the corporate employment framework only when it matches the facts. An owner cannot eliminate the added wages by calling the payment a company tax. The underlying tax liability belongs to the employee, and satisfying it is value furnished through employment.

Calculate the gross-up under explicit assumptions

Assume an owner has a $10,000 taxable benefit and the employer agrees to pay the employee's applicable Social Security and Medicare taxes. For illustration, assume all incremental wages are below the Social Security wage base and subject to a combined 7.65% employee rate, with no Additional Medicare Tax or income-tax gross-up. The grossed-up wage amount is $10,000 divided by 0.9235, approximately $10,828.37. The employee tax paid by the employer is about $828.37, rather than $765 calculated only on the original benefit. Employer payroll taxes are additional. If the owner is already above the Social Security wage base, the applicable incremental rate changes. If the company promises to cover income tax too, the calculation becomes larger and depends on the agreed withholding or tax assumptions. This example isolates the iterative employment-tax effect; it is not a final payroll instruction.

Define what the company actually promises to pay

Document whether the gross-up covers employee payroll tax only, federal income-tax withholding, state withholding, or a specified final tax liability. A promise to deliver a net bonus can have different terms from paying the taxes on a noncash benefit. Identify which tax rate or payroll method will be used and whether a later reconciliation is permitted. An owner's marginal tax rate is not automatically the supplemental-wage withholding rate, and withholding is not necessarily final tax. Obtain approval showing total employer cost, including the employer share and any effect on compensation-based benefits. A vague instruction to make the owner whole can produce a much larger payroll than management expected. Confirm available company cash and whether the bonus or benefit remains reasonable compensation under the actual services and business circumstances.

Run the payroll calculation with current year-to-date data

Provide payroll the benefit value, payment date, year-to-date wages, Social Security wage-base status, Additional Medicare withholding position, and applicable state information. Reconcile the gross-up with other pay in the same period. Do not use a flat percentage calculated months earlier if a later bonus changed the relevant wage base. If the employee taxes cannot be collected from cash wages, determine the correct employer-paid treatment instead of leaving an unexplained receivable. Retain the payroll calculation, board approval, deposit confirmation, and W-2 reconciliation. The company should not use income tax withheld from the employee to satisfy Social Security and Medicare taxes incorrectly. If a payment was misclassified after payroll closed, review the correction requirements for both wages and taxes rather than merely changing the general ledger expense account.

Compare gross-up and employee-funded alternatives

Show the owner the noncash benefit value, employee tax to be collected, gross-up wages, employer payroll taxes, and total company outlay. Compare collecting the taxes from another paycheck or receiving an owner cash payment where permitted. The company may decide the benefit is still worthwhile, but should know the full cost before approving it. Preserve the agreement so a later provider can reproduce why wages exceed the benefit's face amount. This is especially useful for property compensation, personal vehicle use, and benefits discovered during year-end reconciliation. The practical outcome is a funded and accurately reported compensation transaction. It is not an accounting shortcut that moves an owner's tax liability off the personal return; the employer's payment of that liability can itself be taxable compensation requiring another layer of calculation.

Confirm the gross-up before transmitting payroll deposits.

Sources & further reading

Consult the original guidance and its effective dates. These references support the educational discussion; their application depends on the specific facts.

This guide was prepared with AI assistance for AE Tax Advisors. No individual professional review is claimed. Examples are illustrative, not client results. Confirm current law, state treatment, and implementation with a qualified professional. Editorial standards.