Give each month its own evidence
An employee's payroll deduction cannot establish everything needed for ACA information reporting. The employer needs records of the coverage offered, the employee's status and any enrollment for the relevant months. Start by having the reporting adviser confirm the employer's filing obligations and the entities and individuals included in the reporting population.
Build a monthly record from employment dates, eligibility determinations, offer materials and carrier or plan enrollment records. Preserve effective dates when information arrives late. A benefit election entered in April may describe coverage that began in March; the entry date should not silently replace the coverage date.
References: IRS: Instructions for Forms 1094-C and 1095-C
Distinguish the offer from the employee's choice
Keep the offer terms and the enrollment election in separate fields. An employee may decline an offer, choose a more expensive option or select family coverage. The Form 1095-C instructions distinguish the offer information from enrollment and explain that the employee required contribution can differ from the amount actually deducted from pay.
Retain the rate schedule for the relevant plan year and the evidence of which offer applied to the employee. If rates change during the calendar year, identify the months affected. Ask the preparer to calculate the reportable contribution using the applicable rules, including any arrangement requiring special treatment.
For an illustrative employee choosing family coverage, the payroll deduction reflects that election. The reporting calculation may use the applicable lowest-cost self-only offer instead. Preserve both amounts and their purposes rather than overwriting one with the other during the reconciliation.
References: IRS: Instructions for Forms 1094-C and 1095-C
Investigate months with employment or coverage changes
Review hires, departures, changes in hours, unpaid leave and transfers between related employers individually. Compare the offer's effective dates with the employment history and enrollment record. The instructions apply monthly coding rules and contain specific treatment for partial months and COBRA circumstances; a year-end active-or-inactive flag is too coarse.
Ask the adviser to resolve conflicting evidence before choosing a code. For example, a carrier file may show coverage ending on a different date from the benefit administrator's record. Preserve both sources and document which date was confirmed. A code selected merely because it clears a software validation warning can obscure the underlying error.
Where the employer self-insures, confirm the population and monthly coverage evidence needed for covered individuals. Keep dependent information in the restricted benefits file and provide the preparer with the authorized export. Payroll's employee-only roster may omit people whose coverage must be considered.
References: IRS: Instructions for Forms 1094-C and 1095-C
Approve the year's codes against finalized instructions
Use finalized instructions for the year being reported. The cited IRS page contains year-specific codes, conditions and examples; do not assume a prior-year mapping remains correct. Have the preparer document the rule used for each recurring situation and separately review unusual cases.
Reconcile the individual statement population to the employer transmittal and explain exclusions. Preserve the approved monthly dataset, the generated forms and any corrections. Record who will handle employee questions and how a reported error returns to the source system, so correcting a form also corrects the employment or benefits record that produced it.
References: IRS: Instructions for Forms 1094-C and 1095-C
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.