Check the employee-level calculation inputs
Gather the employee's age under the applicable valuation rule, monthly coverage amounts and periods of coverage. Include salary changes that automatically increased insurance, enrollment delays and partial months. Payroll may otherwise calculate a full year at the employee's final coverage level.
Identify employee payments that qualify to reduce the taxable cost and how those payments were taxed. Reconcile them to actual deductions. A planned contribution in a benefits election is not evidence that the employee paid it, and an employer-paid premium should not be mistaken for an employee contribution.
For a hypothetical employee whose coverage increased halfway through the year, prepare two coverage periods with their own amounts. Do not average the face values unless the specialist confirms that the method produces the required result. Preserve the dates so the calculation can be reproduced from the underlying insurance record.
References: IRS Publication 15-B (2026): Employer's Tax Guide to Fringe Benefits
Route special employee categories for review
Publication 15-B describes different treatment for certain owners, key employees under discriminatory arrangements and former employees. Ask the administrator to identify those cases before payroll applies its ordinary employee formula. A correct default calculation can still be wrong for an employee who falls within a specific exception.
For coverage after termination, confirm the employee and employer Social Security and Medicare treatment and the required wage-statement codes. Do not assume that a person with no cash paycheck has no reporting requirement. Retiree or former-employee records may need to stay active for reporting purposes.
Document the factual reason for any special treatment and the specialist who approved it. Keep ownership and plan-testing information in the restricted benefits record. Payroll needs a dependable classification without having to infer it from job titles or a general list of executives.
References: IRS Publication 15-B (2026): Employer's Tax Guide to Fringe Benefits; IRS: General Instructions for Forms W-2 and W-3 (2026)
Compare the taxable value with the payroll outputs
Review the imputed value in each applicable wage category, the related taxes and W-2 code C reporting. Publication 15-B describes different federal income-tax withholding and employment-tax treatment for group-term life benefits, so all taxes should not be switched on or off together without review.
Check whether the system has already included monthly imputed amounts before adding a year-end adjustment. The final entry should reflect the approved remaining difference, not another full annual calculation. Reconcile the total to the benefits administrator's final coverage schedule.
References: IRS Publication 15-B (2026): Employer's Tax Guide to Fringe Benefits; IRS: General Instructions for Forms W-2 and W-3 (2026)
Keep changes traceable into the next year
Save the coverage periods, table version, employee contributions and reviewed calculation. Record the payroll run containing any final adjustment. If the insurer later corrects coverage dates, compare the new history with what was reported before deciding whether wage statements require correction.
Give the next administrator the continuing policy and employee-status information. Refresh age and coverage inputs under the applicable year's instructions. A life-insurance earning code can persist for years, but its calculation should continue to reflect the actual benefit and the employee's circumstances.
Sources
Requirements and product details can change. Check the linked guidance for the facts that apply to your situation.
Related reading
Need help with this work?
General information, not personalized accounting, tax, legal, or investment advice. Have the appropriate qualified professional review decisions that depend on your circumstances.