S-Corp Accountable Plan: How to Reimburse Personal Expenses Tax-Free

S-Corp shareholder-employees cannot deduct unreimbursed employee business expenses on their personal return (the TCJA/OBBBA permanently suspended the Schedule A deduction for unreimbursed employee expenses). However, the S-Corp can reimburse the shareholder-employee for business expenses through an accountable plan, and the reimbursement is tax-free to the employee and deductible by the S-Corp. This is one of the most overlooked S-Corp benefits.

How does the home office reimbursement work?

What other expenses can be reimbursed?

Vehicle: The S-Corp reimburses the owner at the standard mileage rate (70 cents a mile for 2025; for 2026, 72.5 cents through June 30 and 76 cents from July 1) for business miles driven in the owner’s personal vehicle. At the 2025 rate, a 10,000-mile year generates a $7,000 tax-free reimbursement.

Cell phone: The S-Corp reimburses the business-use percentage of the owner’s personal cell phone plan. If the phone is 70% business use and the plan costs $100/month, the reimbursement is $840/year.

Internet: Same concept. If the home internet is 50% business use and costs $80/month, the reimbursement is $480/year.

Professional development: Courses, certifications, conferences, and books related to the business.

What are the requirements for the plan?

The accountable plan should be a written document adopted by the S-Corp (a board resolution or standalone policy). The regulations require an arrangement that meets the three tests, not a written plan, but a written one is the easiest proof of the rules you follow. The document should specify: the types of expenses covered, the substantiation requirements (receipts within 60 days), the return-of-excess requirement (120 days), and the reimbursement process (expense report submitted to the corporation).

The plan does not need to be filed with the IRS. It must be maintained in the corporate records and followed consistently. If the plan’s requirements are not followed (no substantiation, no return of excess), the reimbursements become taxable compensation to the employee (reported on the W-2) and subject to FICA.

When does it make sense to elect S-Corp taxation for my LLC?

The general rule of thumb is when your net self-employment income consistently exceeds $40,000-50,000 annually. Below that, the S-Corp’s added compliance costs (payroll processing, quarterly payroll tax filings, a separate corporate return) often exceed the FICA savings. The calculation is straightforward: an S-Corp pays FICA only on the owner’s reasonable salary, not on distributions above that salary. If your LLC earns $100,000 and a reasonable salary is $60,000, you save roughly $4,950 a year: self-employment tax on the full $100,000 is about $14,130 (15.3% x 92.35% x $100,000), while payroll tax on the $60,000 salary is $9,180 (15.3% x $60,000). Subtract $2,000-3,000 in added compliance costs for payroll and the separate S-Corp return, and you net roughly $2,000-3,000 in annual savings. File Form 2553 by March 15 for a calendar-year election, or no more than 2 months and 15 days after the LLC’s first tax year begins (the date it first has owners, assets or business) for a mid-year start.

What happens if an expense reimbursement does not meet accountable plan requirements?

If the plan fails any of the three accountable plan requirements (business connection, adequate accounting within a reasonable period, and return of excess within a reasonable period; 60 and 120 days are the IRS safe harbors), everything paid under it is treated as taxable compensation. If an employee just fails to return an excess, only the excess is taxable. For employees, this means the amount is added to their W-2 wages and subject to income tax, Social Security, and Medicare. That applies to S-Corp shareholder-employees too: amounts paid under a nonaccountable plan are wages reported on the W-2. The most common failure is the timing requirement: employees who submit receipts six months after the expense, or who do not return excess per diem amounts, cause those late or unreturned amounts to lose their tax-free treatment. Establish a written accountable plan policy and enforce the deadlines consistently. The IRS looks at whether the plan is followed in practice, not just whether a policy document exists.

Related guides:

• Accountable Plan for S-Corp Owners: Tax-Free Employee Reimbursements

• Accountable Plan: Tax-Free Expense Reimbursement for S-Corp Owners and Employees

This guide is general information, not tax advice for your specific situation. Which points apply, and how, depends on your facts.