What an Accountable Plan Is and Why Every S-Corp Owner Should Have One
Sam's List Editorial | 2026-06-23
What an Accountable Plan Is and Why Every S-Corp Owner Should Have One If you own an S-corp and you've ever paid for a business expense out of your personal account, you've probably been losing money on it. Quietly. Every month. Here's the accountable plan explained in one sentence: it's a short document that lets your S-corp pay you back for business use of your home, phone, and car — tax-free, no payroll tax, no Schedule A, no questions from the IRS. Most S-corp owners have never set one up. That's a few thousand dollars a year walking out the door. The rules come from Treasury Regulation 1.62-2, and they're not complicated. You just have to know they exist. Why your S-corp can't deduct what you pay personally When you became an S-corp, you stopped being a sole proprietor. That sounds obvious, but it has a sharp consequence most people miss. A sole proprietor writes off the home office and the business miles right on Schedule C. An S-corp owner can't. The corporation is a separate taxpayer, and the Tax Cuts and Jobs Act killed the employee deduction for unreimbursed business expenses through at least 2025. So when you personally pay for the home office, the cell phone, and the work miles, nobody deducts them. Not you. Not the corporation. An accountable plan fixes the gap. The S-corp reimburses you for those costs. The corporation deducts the reimbursement, and the money lands in your pocket completely tax-free. The accountable plan explained: three rules from Treas. Reg. 1.62-2 The regulation lays out three requirements. Hit all three and the reimbursement is excluded from your wages — meaning no income tax and no payroll tax on it. Business connection. The expense has to be a real, ordinary business cost you incurred as an employee of your own S-corp. A laptop for work counts. A laptop for your kid does not. Substantiation. You have to document the amount, the date, and the business purpose of each expense within a reasonable period. More on the timing in a second. Return of excess. If the company advanced you money and you spent less than that, you have to give the difference back within a reasonable period. Miss any one of these and the IRS reclassifies the whole payment as wages. Which brings us to the part that actually costs people money. What "without one" really costs Say your S-corp hands you $12,000 over the year for the home office, phone, internet, and mileage, but you never set up a plan and never documented anything. Under Treas. Reg. 1.62-2, that $12,000 is now taxable wages. It gets hit with the full payroll tax — 15.3% combined...
