Is a per diem for business travel taxable?

It depends on how it's structured. A reimbursement or advance for actual, ordinary and necessary travel expenses that the employee liquidates with receipts is not taxable compensation. A fixed per diem the employee keeps regardless of actual spending, with no requirement to liquidate or return the excess, is fully taxable compensation.

Are travel allowances on the BIR's de minimis benefits list?

No. Rice subsidy, uniform allowance, medical cash allowance, and laundry allowance each have their own de minimis ceiling under RR No. 11-2018, but travel or transportation per diems are not among the enumerated de minimis categories. There's no partial exemption for a travel allowance the way there is for those other benefits — it's either fully exempt as a liquidated reimbursement or fully taxable.

What happens if an employee doesn't liquidate a travel advance?

An unliquidated advance loses its reimbursement character and is treated as taxable compensation. In practice, employers commonly set an internal liquidation window — often around 10 business days after the trip — after which an unliquidated amount is reclassified as taxable income and run through payroll withholding.

Does it matter whether the employee is rank-and-file or managerial?

For a properly liquidated reimbursement, no — the exemption under RR No. 2-98 applies regardless of rank, since it isn't a de minimis benefit that's limited by employee classification. For an unliquidated, fixed per diem instead, the rank does matter: it's taxable compensation for a rank-and-file employee, or a fringe benefit subject to Fringe Benefits Tax if given to a managerial or supervisory employee.

Are Per Diems and Travel Allowances Taxable? BIR Rules on Liquidated vs Fixed Reimbursements

Q: What rule exempts a liquidated travel expense reimbursement from withholding tax?

Section 2.78.1(A)(6)(b) of Revenue Regulations No. 2-98, as amended, excludes amounts paid as advances or reimbursements for travelling, representation, and other bona fide ordinary and necessary business expenses from compensation subject to withholding tax — conditioned on the expense being properly substantiated and liquidated.

A travel reimbursement that an employee properly liquidates with receipts isn’t taxable — but a flat per diem the employee simply pockets, with no requirement to account for actual spending, is fully taxable compensation. The difference isn’t the label on the payment; it’s whether the employee had to substantiate and liquidate it. Travel allowances also aren’t on the BIR’s de minimis benefits list, so unlike a rice subsidy or uniform allowance, there’s no partial exemption ceiling to fall back on.

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When is a travel reimbursement not taxable? #

A reimbursement or advance for actual, ordinary and necessary business travel expenses is excluded from taxable compensation, provided the employee actually accounts for and liquidates it. The governing rule is Section 2.78.1(A)(6)(b) of Revenue Regulations (RR) No. 2-98, as amended — part of the same regulation that governs withholding tax on compensation generally. A commonly cited formulation of the rule:

“Any amount paid specifically, either as advances or reimbursements for travelling, representation, and other bonafide ordinary and necessary expenses incurred or reasonably expected to be incurred by the employee in the performance of his duties are not compensation subject to withholding tax.”

Two conditions have to hold for this exclusion to apply:

The expense is ordinary and necessary, incurred in the performance of the employee’s duties — actual transportation, lodging, meals while traveling, or representation costs directly tied to company business.
The employee liquidates the advance or reimbursement — accounting for the actual amount spent with supporting documentation, consistent with the substantiation requirements that also apply to a business’s own deductible expenses under NIRC Section 34.

When is a per diem fully taxable instead? #

A fixed, flat per diem or travel allowance — one the employee receives regardless of actual expenses, with no obligation to liquidate or return any unused portion — is not a reimbursement at all. It’s additional compensation. The entire amount is taxable:

Taxable compensation, subject to ordinary withholding tax on compensation, for a rank-and-file employee.
A fringe benefit, subject to Fringe Benefits Tax, if given to a managerial or supervisory employee.

This matters because travel and per diem allowances are not among the BIR’s enumerated de minimis benefits — rice subsidy, uniform and clothing allowance, medical cash allowance to dependents, and laundry allowance each carry their own ceiling under RR No. 11-2018, but there’s no equivalent category, and no equivalent partial exemption, for a travel per diem. It’s an all-or-nothing outcome that turns entirely on whether liquidation actually happens.

Liquidated vs fixed: side-by-side #

	Liquidated reimbursement	Fixed, unliquidated per diem
Employee must account for actual spending	Yes, with receipts	No
Excess returned to employer if underspent	Yes	No — employee keeps the full amount
Taxable?	No (RR No. 2-98 Sec. 2.78.1(A)(6)(b))	Yes — compensation (rank-and-file) or fringe benefit (managerial)
De minimis ceiling available	Not applicable — exemption isn’t ceiling-based	Not applicable — travel isn’t a de minimis category

Worked example: a two-day provincial site visit #

An employee travels to a provincial branch for a two-day site visit and is advanced ₱15,000 for transportation, lodging, and meals.

Scenario A — liquidated: The employee returns with official receipts totaling ₱12,400 and refunds the unused ₱2,600 to the company. The full ₱12,400 is excluded from compensation — no withholding tax applies to any part of it.
Scenario B — fixed per diem: The company instead pays a flat ₱15,000 travel allowance for the trip, with no requirement to submit receipts or return unused funds. The entire ₱15,000 is treated as additional taxable compensation for that payroll period (or a fringe benefit, if the employee is managerial), regardless of what was actually spent.

Same trip, same purpose — but the liquidation requirement is what determines whether any of it is taxed.

Why this trips up employers #

Employers sometimes assume “it’s for company business” is enough to keep a travel allowance untaxed, without setting up an actual liquidation process. Without documented liquidation, the payment defaults to taxable compensation regardless of intent — the exemption under RR No. 2-98 isn’t automatic just because the trip itself was legitimate business travel; it depends on the employer actually requiring and keeping proof of substantiation. This is the same substantiation discipline covered generally in Can You Deduct Business Expenses Without an Official Receipt? — the receipt requirement isn’t unique to travel pay, it’s the same standard the BIR applies to any ordinary and necessary business expense. Because a fully taxable per diem runs through the same payroll cycle as regular pay, it’s computed using the same BIR withholding tax table as any other compensation.

Summary #

A liquidated, receipted travel reimbursement is excluded from taxable compensation under RR No. 2-98 Section 2.78.1(A)(6)(b); a fixed per diem with no liquidation requirement is fully taxable, with no de minimis fallback to soften it. The practical takeaway for payroll: require actual liquidation with receipts if you want the reimbursement to stay tax-free, and treat any flat travel allowance as compensation from day one if you don’t.