Accountable Plan: Reimbursing Employees Tax-Free

An accountable plan is an employer reimbursement policy that lets you repay employees for business expenses without the money counting as wages. If the expense is business-related, the employee documents it within a reasonable time and returns any excess, the reimbursement is tax-free to the employee and deductible for the business. For S corporation owners, it is the main way to get tax benefit from a home office, car and phone.

Below are the three IRS requirements, the safe-harbor deadlines, what you can reimburse, a worked S corp example and a simple policy you can adapt. This is general information, not tax advice; ask your accountant to review your plan.

What is an accountable plan?

Under Treasury Regulation 1.62-2, reimbursements and allowances paid under an accountable plan are excluded from an employee's income. IRS Publication 15 summarizes the employer rules. Anything paid outside an accountable plan, such as a flat $300 monthly car allowance with no mileage records, is a nonaccountable plan and must be treated as wages.

Why it matters more than ever: employees can no longer deduct unreimbursed work expenses as miscellaneous itemized deductions. The 2017 tax law suspended that deduction, and the One Big Beautiful Bill Act in 2025 made the change permanent. If the employer does not reimburse, the employee gets no tax benefit.

The three requirements

Requirement	What it means	Example
Business connection	The expense was paid or incurred while performing services as an employee	Hotel for a client visit, not a personal vacation
Substantiation	The employee accounts for amount, time, place and business purpose within a reasonable period	Receipt plus expense report naming the client and project
Return of excess	Any advance or allowance above substantiated expenses is returned within a reasonable period	Unused $220 of a $1,500 travel advance repaid

The reasonable-period safe harbors

• Fixed date method: advances no more than 30 days before the expense; substantiation within 60 days after it is paid or incurred; excess returned within 120 days.
• Periodic statement method: the employer sends statements at least quarterly listing amounts not yet substantiated, and the employee must substantiate or return them within 120 days of the statement.

Amounts not substantiated or returned in time become taxable wages in the next payroll period. Only those amounts lose their tax-free status; the rest of the plan still works.

What you can reimburse under an accountable plan

• Travel: airfare, lodging and meals, either at actual cost or using federal per diem rates, which count as substantiated for amount.
• Vehicle use: mileage at or below the IRS standard rate; see the 2026 IRS mileage rate and keep a mileage log.
• Home office: the business share of rent or mortgage interest, utilities, insurance and repairs, for employees who use part of their home regularly and exclusively for work at the employer's convenience.
• Phone and internet: the business-use percentage.
• Supplies, tools and software bought for work.
• Client meals, subject to the 50% limit on the business's deduction; see the business meals deduction.
• Professional dues, training and conferences related to the job.

Worked example: an S corp owner's annual reimbursement

Illustrative: Priya owns a consulting S corporation and is its only employee. Her company adopts an accountable plan in January and reimburses her quarterly.

Expense	Calculation	Annual reimbursement
Home office	200 of 2,000 sq ft = 10% x $24,000 rent and utilities	$2,400
Phone and internet	60% business use x $150 a month x 12	$1,080
Business mileage	4,000 logged miles at the IRS standard rate	Rate x 4,000
Conference travel	Actual receipts	$1,280
Total (excluding mileage)		$4,760

The company deducts the $4,760 plus mileage as business expenses, and Priya receives it tax-free. If she had instead paid herself $4,760 more in salary to cover the costs, she would owe income tax and both halves of payroll tax on it. At a combined 22% income tax and 15.3% FICA, routing these costs through an accountable plan saves roughly $1,775 a year, before counting mileage. It also keeps her W-2 salary focused on the reasonable salary the IRS expects.

For the conference, the company advanced $1,500 three weeks before the trip; Priya spent $1,280, submitted receipts within 30 days, and returned $220. Everything stayed tax-free.

Step by step: setting up an accountable plan

1. Write the policy. List eligible expense types, documentation required, deadlines and the reimbursement method.
2. Adopt it formally. For corporations, approve it by board resolution or written consent before reimbursing.
3. Create an expense report process. Our expense report template captures date, amount, place, business purpose and receipts.
4. Set deadlines: 60 days to submit, 120 days to return excess advances.
5. Reimburse through accounts payable, not payroll, with a clear description.
6. Book the expense in the correct category, not as wages or owner distributions. Good expense tracking makes this easy.
7. Move late items to payroll as taxable wages if the deadline passes.

A simple accountable plan policy you can adapt

Your policy does not need to be long. A one-page document covering these points is enough for most small businesses:

1. Purpose: the company reimburses ordinary and necessary business expenses employees incur while performing services for the company, under an accountable plan as defined in Treasury Regulation 1.62-2.
2. Eligible expenses: travel, lodging, meals while traveling, mileage at the IRS standard rate, home office costs for employees required to work from home, phone and internet business use, supplies and professional development.
3. Documentation: receipts for any expense of $75 or more (and for all lodging), plus the date, place, amount and business purpose for every expense.
4. Deadlines: expense reports within 60 days after the expense; excess advances returned within 120 days.
5. Advances: issued no more than 30 days before the expected expense.
6. Late or unsupported amounts: treated as taxable wages and processed through payroll.
7. Approval: who reviews and approves reports, and how often reimbursements are paid.

The $75 receipt threshold reflects the IRS rule that documentary evidence is generally required for expenses of $75 or more and for all lodging, though you can set a lower threshold for your business.

Home office reimbursements in more detail

Home office reimbursements are the most valuable and most scrutinized part of many S corp accountable plans. A defensible calculation uses actual figures:

• Business percentage: square footage of the space used regularly and exclusively for work divided by the home's total square footage.
• Indirect costs: rent, or mortgage interest and property taxes for owners, plus utilities, homeowner's or renter's insurance, HOA fees and general repairs, multiplied by the business percentage.
• Direct costs: painting or repairs to the office itself, reimbursed in full.
• Depreciation: homeowners can include a depreciation component, but discuss it with your accountant because it affects the tax on a later sale.

Reimburse monthly or quarterly based on actual bills rather than a flat round number, and attach the calculation to each expense report.

Making your plan audit-ready

If the IRS examines your business, it will ask whether reimbursements were really made under an accountable plan. Strong evidence includes:

• A dated, signed policy or board resolution adopted before the reimbursements.
• Expense reports that tie each reimbursement to receipts and a stated business purpose.
• Reimbursement payments that match the reports exactly, ideally by bank transfer with a reference.
• Mileage logs written at or near the time of each trip, not reconstructed at year-end.
• Home office measurements and a short explanation of why the employee works from home.
• Evidence that late items were added to wages rather than ignored.

Store everything by year for at least as long as your tax records, generally three years from filing and longer in some situations.

Sole proprietors and partners

Accountable plans are for employees. A sole proprietor or single-member LLC owner simply deducts business expenses directly on Schedule C, including a home office on Form 8829 or the simplified method; see our home office deduction guide. Partners in a partnership can be reimbursed under the partnership's own reimbursement policy, or, if the partnership agreement requires partners to bear certain expenses themselves, deduct them as unreimbursed partnership expenses on Schedule E. If you are deciding whether S corporation status makes sense, the accountable plan is one of the benefits to weigh, along with the cost of running payroll.

Accountable vs nonaccountable plan

Feature	Accountable plan	Nonaccountable plan
Taxable to employee	No	Yes, as wages
Payroll taxes	None	Income tax withholding and FICA
Reported on W-2	No (except excess per diem)	Yes
Employer deduction	As business expense	As wages
Paperwork	Receipts and reports	Minimal

Common mistakes

• Flat allowances with no accounting, such as a fixed phone stipend, which are taxable unless substantiated.
• Reimbursing S corp owners without a plan, which can make payments look like disguised distributions or wages.
• Double dipping: a sole proprietor or the S corp owner claiming the same home office on a personal return after being reimbursed.
• Missing business purpose on receipts. A receipt alone does not show why the expense was for work.
• Paying per diem above federal rates without reporting the excess as wages.

Billing clients for reimbursed costs

When you reimburse an employee for client travel or materials, you can often pass the cost on. Show reimbursable items as separate invoice lines with dates and descriptions, as explained in our guide to reimbursable expenses on an invoice.

Recover every reimbursable cost

Tracking expenses carefully only pays off if you also bill clients for the costs your contract allows. Add expense lines alongside your fees with our free invoice generator: no sign-up, and you can download the finished invoice as a PDF.