Year-end payroll has a way of hiding its hardest problems until the last week. You reconcile your quarters, you feel good about your numbers, and then someone asks whether the disability payments an insurer sent your employees in the spring made it onto their W-2 forms. Or whether the personal use of that company car got added to wages. Suddenly you are chasing figures from a third party and a leased-vehicle log, with the close date bearing down.
Third-party sick pay and taxable fringe benefits are two of the most common reasons a W-2 comes out wrong. They share a problem. The value is real income, it is often taxable, and it frequently lives outside your regular payroll, so it never flows through the normal process. If you do not deliberately pull it in before year-end close, it does not show up. And a missed amount means corrected forms, amended returns, and a lot of explaining.
The fix is not complicated, but it does require a plan. This guide covers what these items are, why they have to hit the W-2, when to handle them, and how to reconcile so your year-end lands clean the first time. Your people need accurate tax forms. We make that happen.
Third-party sick pay is what it sounds like. When an employee is out on a qualifying disability or extended illness, often tracked through your FMLA and leave of absence management in ADP Workforce Now, a third party such as an insurance company or a plan administrator pays them benefits instead of your regular payroll. The insurer cuts the checks, not you. That is exactly why it slips through the cracks at year-end. The money never touched your payroll system, so nothing about it is automatic.
The tax treatment depends on how the plan was funded, and IRS Publication 15-A is the authoritative reference. When premiums were paid with pre-tax dollars or by the employer, the benefits are generally taxable to the employee. When the employee paid the premium with after-tax dollars, the benefits may not be taxable. That funding question drives whether the amounts belong in taxable wages and how they get reported. It is the first thing to nail down.
Reporting responsibility can also split between you and the insurer, depending on the arrangement. Sometimes the third party handles the tax reporting. Sometimes the employer does. Sometimes it is shared, which is where Form 8922, the Third-Party Sick Pay Recap, comes into play. The insurer should send you a statement of what they paid and what taxes they withheld. That statement is the raw material for getting the W-2 right, so track it down early rather than in the final week.
Fringe benefits are extras of value you give employees beyond regular wages. Many are perfectly tax-free. Plenty are not, and the taxable ones have to be treated as wages under IRS Publication 15-B. The trouble is that they rarely run through payroll during the year, so their value has to be captured and added before you close.
A few common taxable fringe benefits illustrate the pattern. Group-term life insurance coverage above a set threshold generally creates taxable income based on the value of the coverage over that line. Personal use of a company car is another. When an employee drives a company vehicle for personal trips, the value of that personal use is generally taxable and needs to be measured and added to wages. Other examples include certain gift cards, some awards, and various perks that cross a taxable threshold; many of these are handled the same way as bonus payrolls in ADP.
The theme across all of them is the same. The employee received something of value, the tax rules treat that value as wages, and the value has to be calculated and pulled into payroll so it shows up in the right boxes on the W-2. None of that happens on its own, which is why your ADP benefits administration setup and your payroll need to talk to each other. Because the taxability of any specific perk depends on the details and the current rules, confirm each item's treatment with your licensed advisor before you add it.
It helps to remember why this matters, because the why is what keeps the work from feeling like busywork. The Form W-2 is the official record of an employee's taxable wages and the taxes withheld. If taxable third-party sick pay or a taxable fringe benefit is missing from that form, the employee's reported income is understated. The taxes tied to it may be off too. That is not a rounding issue. It is an accuracy issue with the tax authorities on the other side.
When an amount is left off and caught later, the cleanup is painful. You may need a corrected W-2 on Form W-2c, which then ripples into the employee's own tax filing. If they already filed, they may have to amend. Your client may owe additional employer taxes, sometimes with interest, reported on an amended Form 941-X. What could have been a clean line entry in December becomes a multi-party correction in February or March.
Getting it right the first time is far cheaper than fixing it later. That is the whole case for handling these items deliberately and on schedule. The value has to land on the W-2 so the numbers match reality, and matching reality up front saves everyone the corrections later.
Timing is where these items live or die. The value of taxable fringe benefits and third-party sick pay needs to be recorded in payroll before your final payroll of the year closes. Once the year is closed and W-2 forms are generated, adding a missed amount means a correction rather than a clean entry. So the calendar is your friend or your enemy, depending on how early you plan.
Start gathering the source data well before December, ideally as part of a year-end payroll checklist you start early. Ask the insurer or third-party administrator for the sick-pay statement early, because you cannot report what you do not have in hand. Pull the personal-use mileage figures for company vehicles. Confirm the group-term life coverage amounts. Each of these takes time to collect from someone outside payroll, and the last week of the year is the worst time to start asking.
In ADP Workforce Now, plan how these amounts get entered so they land in taxable wages correctly and update the right tax figures. Some items only affect certain taxes. Some need special earning or memo codes so they report in the right place without creating a cash payment, which is the same benefits-to-payroll mapping discipline that keeps deductions accurate all year. Sort out the mechanics on a normal week, not during the year-end crunch, and give yourself a buffer before the close date so there is room to fix a surprise.
Entering the amounts is not the finish line. Reconciliation is. You want to confirm that what the insurer reported matches what you recorded, that the fringe values you calculated made it into wages, and that the tax figures moved the way they should. Reconciliation is how you catch the one item that got entered wrong or not at all before the forms go out.
Work from the source documents. Lay the insurer's sick-pay statement next to what posted in payroll and confirm the wage and tax amounts line up. Do the same for each fringe benefit. Compare the coverage value or personal-use value you calculated against what actually hit the employee's taxable wages. When something does not tie, you want to find it now, while a correction is still a quick fix instead of an amended form. Keeping those source documents together is also the foundation of audit-ready payroll documentation.
Give special attention to the tax side. Third-party sick pay often involves taxes the insurer already withheld, and those need to be reflected accurately so you do not double-count or miss them. Group-term life over the threshold affects certain taxes but not necessarily all of them; IRS Publication 15 spells out which. Reconciling these details is exactly the kind of careful, unglamorous work that keeps a clean year-end from turning into a messy one.
A client asked us to review their year-end before close, and we found two gaps that would have caused corrections. First, an employee had been out on disability, and the insurer paid about $9,000 in benefits during the year. Because the plan was employer-funded, those benefits were taxable, and the insurer's statement showed taxes they had already withheld. None of it had been recorded in payroll yet. Left alone, that employee's W-2 would have understated wages by roughly $9,000.
Second, two employees had personal use of company vehicles. Using the mileage logs, the taxable value came to about $2,400 for one and $1,800 for the other. Neither had been added to wages. We also caught group-term life coverage above the threshold for a handful of employees, worth a small taxable amount each. We helped the client record each item before the final payroll of the year, matched the insurer's withheld taxes so nothing double-counted, and reconciled every figure against its source document. The W-2 forms went out correct the first time. No corrections, no amended filings, no awkward calls in March.
Often, yes. Third-party sick pay is frequently taxable and has to be reflected on the W-2 even though the money came from the insurer, not your payroll. The exact reporting split between you and the third party depends on the arrangement and how the plan was funded. Get the insurer's statement and confirm the treatment with your licensed advisor.
Generally, the personal-use portion is treated as taxable income and needs to be measured and added to wages. The business-use portion is not. You need a reasonable method to separate the two, usually from mileage records. Because valuation rules have specifics and change over time, confirm your method with your advisor and verify current rules with official sources.
You are into correction territory, which usually means a corrected W-2 and possibly amended filings. It is fixable, but it takes more effort than catching it in December would have. The lesson for next year is to gather third-party and fringe data early and reconcile before close.
The payroll teams that sail through year-end treat third-party sick pay and fringe benefits as a scheduled project, not a surprise. They build a list of every likely item, disability payments, personal vehicle use, group-term life, and any other taxable perk, and they assign an owner and a due date to each. They request insurer statements and mileage logs in the fall, not the final week. They enter the amounts before the last payroll and leave a buffer for fixes, working through a W-2 prep and year-end cleanup checklist so nothing is left to memory.
Then they reconcile against source documents before the forms go out. That habit, matching every figure back to where it came from, is what turns year-end from a stressful guess into a confident close. Do it once as a routine and the corrections mostly disappear. Hair on fire at year-end? That is exactly the moment to have your checklist ready.
Ignite HCM is staffed by former ADP service professionals who work with ADP exclusively. We have handled third-party sick pay, fringe benefits, and year-end close across all kinds of client setups, and we know where the reporting gaps hide. When you are staring down a close date with an insurer statement you cannot decode, you do not want a ticket queue or hold music. You want a dedicated consultant who knows the work. No tickets, no hold queues. We've got you.
Year-end bearing down with items still unreported? REQUEST A CONSULTATION.
ADP and the ADP logo are registered trademarks of ADP, Inc. This article is general guidance only and not legal, tax, or benefits-compliance advice. The taxability of third-party sick pay and fringe benefits depends on plan funding and specific facts and changes over time. Confirm the treatment of your items with your licensed advisor and verify current rules with official sources.