Accountable Plan

An accountable plan is a reimbursement or other expense allowance arrangement that satisfies the three requirements set out in 26 CFR 1.62-2: business connection, substantiation, and the return of amounts in excess of substantiated expenses. The regulation states that "except as provided in paragraph (c)(2)(ii) of this section, if an arrangement meets the requirements of paragraphs (d), (e), and (f) of this section, all amounts paid under the arrangement are treated as paid under an 'accountable plan.'" The term itself comes from the regulation rather than from the statute, which speaks instead of a "reimbursement or other expense allowance arrangement" and, in Internal Revenue Code section 62(c), disqualifies any arrangement that does not require substantiation or that lets the employee keep the excess. Despite the shared vocabulary, an accountable plan has nothing to do with a health reimbursement arrangement, which is a different animal governed by different rules.

Business connection is the condition that trips up arrangements that look generous. Under 1.62-2(d)(1) the arrangement must provide advances, allowances or reimbursements "only for business expenses that are allowable as deductions" under the relevant part of the Code "and that are paid or incurred by the employee in connection with the performance of services as an employee of the employer." Two refinements follow. If wages and the reimbursement are paid together, the reimbursement has to be identified separately, either as its own payment or as an identified amount. And under (d)(3)(i), if the employer pays an amount "regardless of whether the employee incurs (or is reasonably expected to incur)" such expenses, the arrangement fails outright. The regulation's own example is an employer paying engineers $200 a day and designating $50 of it as travel reimbursement on travel days: because the $200 would be paid either way, none of it is accountable and the whole $200 is wages. An arrangement can also be split in two, with the part covering deductible expenses accountable and the part covering other bona fide business costs nonaccountable.

Substantiation under (e)(1) means each business expense is substantiated to the payor "within a reasonable period of time," and the standard depends on the expense. Travel, meals, and use of a car or other listed property fall under section 274(d), so the employee has to give the employer the elements that section requires, which for travel away from home means amount, time, place and business purpose. For everything else, (e)(3) requires enough detail for the employer to identify the specific nature of the expense and conclude it relates to the business, and it says plainly that this is not met where an employee "merely aggregates expenses into broad categories (such as 'travel') or reports individual expenses through the use of vague, nondescriptive terms (such as 'miscellaneous business expenses')." The return-of-excess condition in (f) then requires that anything paid above the substantiated amount comes back, and it constrains advances: an advance qualifies only where the amount is reasonably calculated not to exceed anticipated expenses and is paid within a reasonable time of when those expenses are incurred.

Timing is where most employers want a rule rather than a standard, and the regulation gives one without making it exclusive. Paragraph (g)(1) says the determination "will depend on the facts and circumstances." Paragraph (g)(2) then supplies two safe harbors. Under the fixed-date method, "an advance made within 30 days of when an expense is paid or incurred, an expense substantiated to the payor within 60 days after it is paid or incurred, or an amount returned to the payor within 120 days after an expense is paid or incurred will be treated as having occurred within a reasonable period of time." Under the periodic-statement method, the employer sends statements at least quarterly showing any unsubstantiated balance and asking for substantiation or return within 120 days of the statement. An employer with a practice of over-reimbursing to avoid reporting loses the use of either safe harbor for the years that practice exists, and a broader anti-abuse provision treats every payment under an arrangement as nonaccountable where the arrangement shows a pattern of abuse.

The consequences are asymmetric in a way worth understanding before the audit. Amounts paid under an accountable plan are excluded from gross income, kept off the Form W-2 and exempt from withholding and from the FICA and FUTA taxes. Amounts paid under a nonaccountable plan are the employee's income, are reported as wages, and carry withholding and employment taxes on both sides. Where an arrangement satisfies all three conditions but the employee keeps an excess, the regulation splits the payment rather than condemning the plan: only the amounts not in excess of substantiated expenses stay accountable, and the excess is treated as paid under a nonaccountable plan, subject to withholding no later than the first payroll period after the reasonable period ends. The tests also apply employee by employee, so one person's sloppy expense reports do not taint everyone else's reimbursements.

Getting this wrong became considerably more expensive in 2018 and stayed that way. The regulation, written earlier, still tells an employee whose reimbursement was taxed that the underlying expenses may be deducted as a miscellaneous itemized deduction. That route is closed for almost every employee. Internal Revenue Code section 67(h) provides that, notwithstanding the ordinary 2 percent floor, "no miscellaneous itemized deduction shall be allowed for any taxable year beginning after December 31, 2017," and the One Big Beautiful Bill Act (Public Law 119-21) removed the end date that used to sit at the close of 2025, so the disallowance is permanent under current law. Note the subsection letter: the same act inserted a new subsection (g) about educator expenses and moved the suspension down to (h), which means any pre-2026 citation to "section 67(g)" for this rule now points at something else. A short list of employees is unaffected because their expenses were never miscellaneous itemized deductions in the first place: section 62(a)(2) lets qualified performing artists, fee-basis state and local officials, reserve-component members and eligible educators deduct theirs in arriving at adjusted gross income, and section 67(b)(6) keeps impairment-related work expenses outside the definition. For everyone else the practical effect is that a reimbursement paid under a nonaccountable plan is taxed to the employee with nothing to offset it, and the employee cannot repair it alone: under (c)(3)(i), an employee who receives payments under a nonaccountable plan "cannot compel the payor to treat the payments as paid under an accountable plan by voluntarily substantiating the expenses and returning any excess to the payor." The fix has to be the employer's, and it has to be in place before the money is paid.

1. Tie the payment to a business expense. The arrangement must reimburse or advance only deductible business expenses incurred in performing services for the employer, and a reimbursement bundled into a wage payment must be identified separately. An amount paid whether or not an expense is incurred is never accountable.

2. Require proof, and define what proof means. Travel, meals and vehicle use need the section 274(d) elements. Other expenses need enough detail for the employer to see what each one was and why it was the business's.

3. Set the clock. The fixed-date safe harbor gives 60 days to substantiate and 120 days to return excess, with advances made within 30 days of the expense; the periodic-statement alternative runs the 120 days from a quarterly statement instead.

4. Collect the excess. Anything paid above what was substantiated comes back. If it does not, that excess alone becomes wages while the substantiated portion stays accountable.

5. Keep the reporting consistent. Accountable amounts stay off the Form W-2 entirely. Nonaccountable amounts go into wages with withholding and employment taxes on both sides.

An example shows what the paperwork is worth. An employer advances $1,200 to an employee for a conference trip. The employee files an expense report with receipts for $940 within 60 days and returns the $1,200 − $940 = $260 balance within 120 days. The whole $1,200 is accountable, nothing reaches the Form W-2, and no tax is due on any of it. Now run the same $940 of real expenses through an arrangement that asks for no receipts. The $940 is wages. For an employee in the 22 percent bracket, the income tax and the 7.65 percent employee share of FICA come to $940 × 29.65% = $278.71, and the employee deducts nothing, because section 67(h) allows no miscellaneous itemized deduction. The employer owes its own 7.65 percent as well, $940 × 7.65% = $71.91. The identical business trip has generated $350.62 of income and payroll tax between them, and the only difference was whether anyone asked for the receipts.

Pros

• Reimbursements stay out of the employee's income entirely, with no withholding, no payroll tax on either side, and nothing added to the Form W-2.
• No filing, election or IRS approval is involved. The arrangement qualifies on its terms and how it operates.
• The safe harbors convert a facts-and-circumstances standard into dates a small employer can put in a policy and follow.
• Failure is usually partial rather than total. Where only an unreturned excess is the problem, the substantiated portion remains accountable.

Cons

• All three conditions must hold. An otherwise careful arrangement that never asks for the excess back is nonaccountable in full.
• The employee bears the cost of the employer's paperwork failure, and cannot cure it by substantiating after the fact.
• There is almost never a deduction to fall back on. Since 2018 unreimbursed employee business expenses have not been deductible except for a short list of employees named in section 62(a)(2), and the One Big Beautiful Bill Act made that permanent.
• Substantiation is real administrative work, particularly for travel and vehicle expenses, which carry the stricter section 274(d) requirements.
• A flat monthly allowance paid regardless of spending is the arrangement people find simplest, and it is the one shape the regulation rules out from the start.