Accountable Plans: How S Corporation Owners Get Reimbursed the Right Way
Many S corporation owners pay for business costs personally: a home office, a car, a phone, a conference fee charged to a personal card. Those costs are real. Handled the wrong way, the deduction for them can be lost entirely.
The fix is an accountable plan. It lets your company reimburse you for business expenses without the payment counting as wages, and the company deducts the reimbursement.
Why the deduction disappears without one
If you own an S corporation and work in it, you are an employee of the company. Employees cannot deduct unreimbursed business expenses on their personal federal returns. That deduction was suspended starting in 2018, and the 2025 federal tax law made the suspension permanent.
So if you pay a business expense personally and the company never reimburses you, nobody gets the deduction. And if the company simply sends you extra money labeled as a reimbursement, without a proper plan, the IRS treats it as wages, subject to income tax withholding and payroll taxes.
The three rules
An accountable plan has to meet three requirements:
Business connection. The expense has to be for the company's business, paid or incurred while you are doing your job.
Substantiation. You document each expense: what it was, the amount, the date, and the business purpose. Receipts, mileage logs, and expense reports do this.
Return of excess. If the company advances you more than you spend, you give back the difference within a reasonable period.
The IRS offers a safe harbor for timing: advances made within 30 days of the expense, expenses documented within 60 days after they are paid or incurred, and any excess returned within 120 days. Some companies use a quarterly statement method instead.
Common reimbursements
Home office. If you use part of your home regularly and exclusively for the business, and the arrangement is for the company's convenience, the company can reimburse you for the business share of your home costs. The share is usually based on square footage. Eligible costs typically include rent or mortgage interest, property tax, utilities, insurance, and repairs. Keep a simple floor plan or measurements on file, along with the year's bills. If the company reimburses part of your mortgage interest or property tax, that part comes off your personal itemized deductions, so the same dollar is not deducted twice.
Vehicle. The simplest method is mileage. For 2026, the IRS business standard mileage rate is 72.5 cents per mile for miles driven January 1 through June 30, and 76 cents per mile for miles driven July 1 through December 31. The company reimburses business miles at the rate in effect when they were driven, and you keep a log showing the date, destination, purpose, and miles for each trip. Ordinary commuting does not count. If the company owns the vehicle instead, different rules apply, including how personal use is reported on your W-2.
Phone and internet. The company can reimburse the business share of your cell phone and home internet.
Everything else. Travel, client meals, conference fees, supplies, and software you bought personally all qualify when they are business expenses and documented.
Setting it up
Adopt a written accountable plan. A short document approved by the company, signed and dated, is enough. We can help you draft one.
Submit expense reports on a regular schedule, monthly or quarterly, with receipts and logs attached.
Reimburse from the business account to your personal account, and record each reimbursement to the right expense accounts in the books.
Keep reimbursements separate from distributions. A distribution is not a reimbursement, and mixing the two muddies both.
Start now, and work forward
If you have been paying business costs personally this year, put a plan in place now and reimburse on a regular schedule from here forward. For costs you have already paid, talk with us about what can still be reimbursed cleanly. The further back an expense goes, the harder it is to fit the timing rules.
A California note
California law generally requires employers to reimburse employees for necessary expenses they incur doing their jobs. For companies with staff, an accountable plan is also a practical way to meet that obligation, not just a tax tool for owners.
Book your planning call
If you want help setting up an accountable plan before year end, book a time with our team at calendly.com/kirkcole/15-minute-meeting.
This article is general information, not tax advice for your situation. Tax rules change, and the right move depends on your facts.