Are Reimbursements Taxable? Employee vs Contractor 1099-NEC Rules

Whether reimbursements are taxable comes down to two things: who is being paid, and how the payment is documented. An expense reimbursement paid to an employee is tax-free when the employer’s arrangement meets the IRS accountable plan rules. A reimbursement paid to an independent contractor is almost always taxable, because it gets bundled into the payment reported on Form 1099-NEC. Everything else in the answer is a variation on those two facts.

The Three Rules That Keep an Employee Reimbursement Tax-Free

For an employee, a reimbursement stays off the W-2 only if the arrangement qualifies as an accountable plan under Treasury Regulation 1.62-2. Three requirements have to be met, and missing any one of them turns the whole payment into taxable wages.¹

Business connection. The expense must be a legitimate, deductible business cost incurred while performing services for the employer. Personal expenses never qualify.
Substantiation. The employee has to give the employer records showing the amount, date, location, and business purpose of each expense.
Return of excess. If an advance is larger than actual expenses, the employee has to pay back the difference.

When those three boxes are checked, the reimbursement is excluded from gross income. It doesn’t appear on the W-2, no federal income tax is withheld, and neither the employer nor the employee owes Social Security or Medicare tax on it.¹

Safe Harbor Deadlines

The IRS gives specific windows for the timing piece. Advances have to be received within 30 days of the expense. Substantiation is due within 60 days after the expense is paid or incurred. Excess amounts have to be returned within 120 days. If the employer sends periodic statements requesting an accounting of outstanding advances, the employee has 120 days from the statement date to respond.² Staying inside these windows removes any argument about whether the timing was reasonable.

Why a Nonaccountable Plan Hurts the Employee

When the arrangement fails any of the three requirements, the whole thing is a nonaccountable plan. Every dollar paid under it becomes taxable wages subject to income tax withholding and FICA, including the part that reimbursed real, documented business costs. The label attaches to the whole arrangement, not to the piece that failed.¹

The employee has no way to recover those taxes on a personal return. The miscellaneous itemized deduction for unreimbursed employee expenses was suspended by the Tax Cuts and Jobs Act starting in 2018, and the One Big Beautiful Bill Act made that suspension permanent.³ A taxed reimbursement to an employee is a taxed reimbursement, full stop.

Per Diems and Mileage: The Accepted Shortcuts

An accountable plan doesn’t always require a folder of receipts. Two structured shortcuts stay tax-free as long as payments don’t exceed the IRS ceilings.

For travel on or after October 1, 2025, the high-low simplified per diem rates are $319 per day for high-cost locations in the continental U.S. and $225 per day everywhere else.⁴ Payments at or below those figures satisfy substantiation automatically, though the employee still has to document the date, destination, and business purpose of each trip. Anything paid over the federal rate is taxable wages and has to be run through payroll.⁵

Mileage works the same way. The IRS business standard mileage rate for 2026 is 72.5 cents per mile.⁶ Employers who reimburse at or under that rate, and require a log with date, destination, mileage, and business purpose, have a clean accountable arrangement. Any amount paid above 72.5 cents per mile is taxable. Reimburse at 80 cents, and the extra 7.5 cents per mile is wages.

Reimbursements That Are Taxable No Matter What

Some payments are taxable because the underlying expense isn’t a deductible business cost in the first place. Documentation doesn’t fix that.

Commuting is the big one. The daily trip between home and a regular workplace is personal, and reimbursing it creates taxable income. There are narrow carve-outs: qualified transportation fringe benefits can be excluded up to $340 per month in 2026 for transit passes, vanpool costs, and qualified parking, and occasional taxi fare for overtime work may qualify as a de minimis fringe benefit if it doesn’t exceed $21 per month.⁷ Amounts above the monthly cap are taxable.

Bicycle commuting is now fully taxable. Starting in 2026, the exclusion for qualified bicycle commuting benefits was permanently eliminated, so any employer reimbursement for bike commuting costs goes on the W-2.⁷

Why Contractors Almost Always Get Taxed on Reimbursements

An accountable plan between a client and an independent contractor is technically possible, but rarely practical. Contractors control their own methods, choose their own tools, and bill for the whole cost of a project, so the payer-controlled expense approval that an accountable plan assumes usually isn’t there.

The default treatment for a contractor payment is gross proceeds. If a client pays a single amount that combines a service fee with expense reimbursement, the entire amount is income. A $5,000 consulting fee bundled with $750 in travel reimbursement produces $5,750 in reportable income. The payer includes the full $5,750 on Form 1099-NEC, and the contractor reports it as revenue on Schedule C.⁸

The contractor deducts the actual expense on Schedule C, which zeros it out for income tax purposes. But there’s a catch that costs real money: self-employment tax. The combined SE tax rate is 15.3%, covering Social Security at 12.4% and Medicare at 2.9%.⁹ SE tax applies to net earnings from self-employment, and the reimbursement flows through as revenue. On a $750 reimbursement, the contractor can owe roughly $115 in SE tax that an employee on an accountable plan would never pay.

The Direct-Payment Workaround

The cleanest fix is for the client to pay the vendor directly. If the client books and pays for the contractor’s hotel, that payment never touches the contractor’s hands and isn’t reportable on the 1099-NEC.¹⁰ The money went to the hotel. Separating compensation from cost recovery keeps the contractor’s gross revenue from being inflated by expenses that were really the client’s to pay.

What Payers Need to Do at Year-End

If your business paid a contractor $600 or more during the year, including any taxable reimbursements bundled with service fees, you file Form 1099-NEC. Payments to C corporations and S corporations are generally exempt, with one exception: payments for legal services are always reportable regardless of the attorney’s entity type.¹⁰

Collect a Form W-9 before you pay a contractor. It gives you the legal name, taxpayer identification number, and entity type you need for the 1099-NEC.¹¹ If a contractor won’t provide a TIN or gives you a wrong one, you have to withhold 24% of payments as backup withholding.¹²

Form 1099-NEC has one firm deadline: January 31. The recipient copy and the IRS filing are both due that day, and there’s no automatic extension.¹³ For the 2026 tax year, that means January 31, 2027. Businesses filing 10 or more information returns of any type in a year must file them electronically, and the count combines all forms, not just 1099-NECs.¹⁴

Miss the deadline and the per-form penalties climb quickly. For returns due in 2026, the IRS charges $60 per form up to 30 days late, $130 per form after that through August 1, and $340 per form filed after August 1 or not filed at all. Intentional disregard runs $680 per form with no cap.¹⁵

1
eCFR. 26 CFR 1.62-2 – Reimbursements and Other Expense Allowance Arrangements
2
Internal Revenue Service. Publication 463, Travel, Gift, and Car Expenses
3
Internal Revenue Service. Publication 525 – Taxable and Nontaxable Income
4
Internal Revenue Service. Notice 2025-54, 2025-2026 Special Per Diem Rates
5
Internal Revenue Service. Per Diem Rates FAQ
6
Internal Revenue Service. IRS Sets 2026 Business Standard Mileage Rate at 72.5 Cents Per Mile
7
Internal Revenue Service. Employer’s Tax Guide to Fringe Benefits (Publication 15-B)
8
Internal Revenue Service. About Schedule C (Form 1040), Profit or Loss from Business (Sole Proprietorship)
9
Internal Revenue Service. Self-Employment Tax (Social Security and Medicare Taxes)
10
Internal Revenue Service. Instructions for Forms 1099-MISC and 1099-NEC
11
Internal Revenue Service. Forms and Associated Taxes for Independent Contractors
12
Internal Revenue Service. Backup Withholding
13
Internal Revenue Service. 2026 General Instructions for Certain Information Returns
14
Internal Revenue Service. E-File Information Returns
15
Internal Revenue Service. Information Return Penalties