Accountable Plans: How They Work, Who Qualifies, and What Happens If You Skip One

By Jen McAllister, CPA, Founder of Rise Accounting LLC

If you own an S corporation and pay for your home office, cell phone, or business mileage out of your personal account, you may be losing those deductions. The fix is an accountable plan: a reimbursement arrangement that lets your business pay you back for business expenses tax-free, while the business keeps the deduction.

This guide explains how accountable plans work, who qualifies, what happens if you claim the deductions without one, and how to set one up.

What Is an Accountable Plan?

An accountable plan is an employer reimbursement arrangement that meets the requirements of Treasury Regulation §1.62-2. Reimbursements paid under the plan are not wages.

That has three practical effects:

• Not taxable to the employee. Reimbursements don’t appear on the W-2 and aren’t subject to income tax withholding.
• No payroll taxes. Neither the employer nor the employee pays Social Security or Medicare tax on them.
• Deductible to the business. The business deducts the underlying expense in its proper category.

If the arrangement doesn’t meet these requirements, it’s a non-accountable plan. As a result, the IRS treats every payment under it as taxable wages.

What Are the Three IRS Requirements?

An accountable plan must meet all three of these requirements. Failing any one makes the plan non-accountable.

1. Business connection. The expense must be an ordinary and necessary business expense paid or incurred while performing services as an employee.
2. Substantiation. The employee must document the amount, date, place, and business purpose of each expense within a reasonable period.
3. Return of excess. If the employer advances money, the employee must return any amount not spent on substantiated business expenses within a reasonable period.

What Counts as a “Reasonable Period of Time”?

The IRS provides a fixed-date safe harbor:

Event	Deadline
Advance paid	No more than 30 days before the expense
Expense substantiated	Within 60 days after it’s paid or incurred
Excess returned	Within 120 days after it’s paid or incurred

When Are Receipts Required?

You must keep receipts or other documentary evidence for all lodging, regardless of the amount. You also need this evidence for any travel, gift, or vehicle-related expense of $75 or more. That threshold comes from Treasury Regulation section 1.274-5.

For other expenses, such as a home office, phone, internet, or supplies, the $75 threshold doesn’t apply. You still need documentation sufficient to show what the expense was, which in practice means a receipt, bill, or statement.

Expenses under $75 still need a record of the amount, date, place, and business purpose. The safest habit is to keep receipts for everything.

Who Qualifies for an Accountable Plan?

Employees qualify, including owners who are employees of their own corporation. Here’s how it breaks down by entity type:

Business Type	Accountable Plan?	Why
S corporation owner-employee	Yes	The owner is a W-2 employee of the S corporation. This is the most common use case.
C corporation owner-employee	Yes	Same rules as any other employee.
Employees of any business	Yes	The plan can cover every employee, not just owners.
Sole proprietor or single-member LLC	Not needed	Business expenses are deducted directly on Schedule C.
Partner or multi-member LLC member	Different rules	Partners use a partnership reimbursement policy or unreimbursed partnership expenses, depending on the partnership agreement. Get advice specific to your agreement.

What Expenses Can the Business Reimburse?

The business can reimburse any ordinary and necessary business expense the employee pays personally.

• Home office. The business-use percentage of rent or mortgage interest, property taxes, utilities, insurance, and repairs. To calculate the percentage, divide the square footage you use regularly and exclusively for business by your home’s total square footage.
• Vehicle use. Business miles driven in a personal vehicle, reimbursed at the IRS standard mileage rate for the year, and supported by a mileage log.
• Cell phone and internet. The business-use portion of the monthly bill.
• Travel and meals. Actual costs with receipts, or IRS per diem rates for meals and lodging.
• Supplies, subscriptions, and small equipment bought personally for business use.

What Happens If You Don’t Have an Accountable Plan but Claim the Deductions Anyway?

In most cases, the IRS disallows the deduction or treats the payments as taxable wages. The outcome depends on how you handled the expense.

What You Did	What Happens
Paid business expenses personally and deducted them on your personal return	Disallowed. Employees can’t deduct unreimbursed business expenses. The Tax Cuts and Jobs Act suspended this deduction starting in 2018, and legislation in 2025 made the suspension permanent.
Had the S corp deduct expenses you paid personally	Disallowed. A business can’t deduct expenses it didn’t pay.
Had the business reimbursed you without meeting the requirements, such as a flat monthly allowance with no receipts	The payments are taxable wages, subject to income tax withholding and payroll taxes. Corrected W-2s and payroll filings may be required.
Had the business pay personal expenses directly and deduct them	The IRS may reclassify the payments as wages or as distributions and disallow the deduction.

If the IRS catches any of these in an audit, you may owe additional tax and interest, as well as a 20% accuracy-related penalty on the underpayment.

In addition, a pattern of reimbursing personal expenses can cause the IRS to treat the entire arrangement as non-accountable, not just the problem items.

How Do You Create an Accountable Plan?

There’s no IRS form to file and no approval to request. The regulations don’t even require the plan to be in writing. What matters is that the arrangement meets the three requirements and that you follow it consistently.

That said, a documented plan is much easier to defend in an audit. Here’s the process I recommend:

1. Write a plan document. State which expenses are covered, what documentation is required, submission deadlines, how often reimbursements are paid, and that excess advances must be returned.
2. Adopt it by corporate resolution. Record it in your minutes or a written consent, dated before any reimbursements are paid.
3. Create an expense report template. Capture the date, amount, place, business purpose, and attach receipts for each expense.
4. Build your supporting documentation. Prepare a home office calculation based on square footage, a mileage log with date, destination, purpose, and miles, and a business-use percentage for your phone and internet.
5. Reimburse on a regular schedule. Monthly or quarterly works well. Pay from the business account, separate from payroll.
6. Record reimbursements correctly. Code each one to its actual expense category, as described below.
7. Keep records together and review annually. Update your home office and business-use calculations each year.

The process can flex to fit your business. A sole S corporation owner might combine the expense report and backup into a single spreadsheet. A firm with several employees might add an approval workflow, a per diem policy, company credit card rules, or a year-end submission cutoff.

However, the one step not to skip is having the plan in place before the business pays reimbursements. In fact, the IRS most often challenges these arrangements when you create a plan in December to cover the entire year retroactively.

How Do You Record Reimbursements in the Books?

Record each reimbursement as a debit to the actual expense category and a credit to cash. For example, a $412 home office reimbursement would be recorded like this:

Account	Debit	Credit
Rent or Home Office Expense	$412
Checking		$412

A few rules keep the books clean:

• Use the real expense category. Code mileage to auto expense and the phone to telephone expense, not to a catch-all “Reimbursements” account. That keeps your profit-and-loss statement meaningful.
• Keep it out of payroll. Reimbursements under an accountable plan are not wages.
• Don’t record reimbursements as distributions. For an S corp, that distorts the shareholder basis and results in a loss of the deduction.

What Are the Most Common Accountable Plan Mistakes?

• Flat monthly allowances. A fixed “$500 a month for home office and phone” without substantiation is a non-accountable plan, so the full amount is taxable wages.
• One lump-sum reimbursement at year-end. Reimbursing a full year in December can fall outside the 60-day substantiation safe harbor.
• Missing documentation. No receipts, no mileage log, or no business purpose means the expense doesn’t qualify.
• Booking reimbursements as distributions. This loses the deduction and muddies S corp basis tracking.
• Double-dipping. An expense the business reimbursed can’t also be deducted on the owner’s personal return.
• Reimbursing personal expenses. A pattern of this can disqualify the entire plan.
• Keeping unused advances. Excess advances not returned within a reasonable time become taxable wages.

Accountable plans

FREQUENTLY ASKED QUESTIONS

Question

Are Accountable Plan Reimbursements Taxable?

Answer

No. Properly substantiated reimbursements under an accountable plan aren’t included in the employee’s income and aren’t subject to payroll taxes.

Question

Can a Single-Owner S Corporation Have an Accountable Plan?

Answer

Yes. The owner is an employee of the S corporation and can be reimbursed under the same rules as any other employee.

Question

Do I Have to File an Accountable Plan With the IRS?

Answer

No. There’s no filing or approval. Keep the plan document and resolution with your corporate records.

Question

Does an Accountable Plan Have to Be in Writing?

Answer

The regulations don’t strictly require it, but a written plan adopted before reimbursements begin is strongly recommended because it proves the arrangement existed.

Question

Are Receipts Required for Expenses Under $75?

Answer

For travel, gifts, and vehicle expenses, receipts aren’t required under $75, except for lodging. You still need a record of the amount, date, place, and business purpose. For other expenses, keep documentation showing what the expense was.

Question

How Often Should Reimbursements Be Made?

Answer

Monthly or quarterly. That keeps substantiation within the IRS’s 60-day safe harbor.

Question

What’s the Difference Between an Accountable and a Non-Accountable Plan?

Answer

An accountable plan meets the business connection, substantiation, and return-of-excess requirements, so reimbursements are tax-free. A non-accountable plan fails at least one requirement, so payments are taxed as wages.

Question

What If the Business Can’t Afford to Reimburse the Owner by Year-End?

Answer

The business doesn’t lose the deduction; it claims it in the year it actually pays.

A cash-basis S corp deducts reimbursements when it pays them. For example, if it reimburses $15,000 of 2026 expenses in 2027, it deducts that amount in 2027. An accrual-basis S corp generally gets the same result because amounts owed to a shareholder are deductible only when paid under the related-party rules.

The owner still receives the reimbursement tax-free.

Avoid shortcuts: a promissory note from the corporation isn’t payment. The IRS can disregard a circular loan from the owner to fund the reimbursement. Also, reclassifying the balance as distributions forfeits the deduction.

Pay the balance as soon as cash allows, and keep the approved expense reports showing that you substantiated each expense on time.

This article is general information, not tax advice for your specific situation. Tax rules change, so confirm current requirements with your tax professional before acting.