BIR Issues RMC No. 81-2025: Guidelines on Deductibility of Ordinary and Necessary Business Expenses
- Yasser Aureada
- Sep 3
- 2 min read

The Bureau of Internal Revenue (BIR) has issued Revenue Memorandum Circular (RMC) No. 81-2025, reiterating the criteria and guidelines on the deductibility of ordinary and necessary expenses under Section 34(A)(1)(a) of the National Internal Revenue Code of 1997 (Tax Code), as amended.
This circular provides clarity for taxpayers on what constitutes allowable deductions to ensure fairness, transparency, and accuracy in tax reporting.
Who Are Entitled to Claim Deductions?
The following taxpayers may claim deductions from gross income under Section 34 of the Tax Code:
Individuals (citizens and resident aliens) engaged in business or practice of profession
Non-resident aliens engaged in trade or business in the Philippines
General professional partnerships and their members
Domestic corporations
Proprietary educational institutions and hospitals
Government-owned and controlled corporations (GOCCs)
Resident foreign corporations
Criteria for Deductibility
For an expense to qualify as deductible, it must meet all the following conditions:
Ordinary and Necessary
Ordinary Expense: Normal, usual, and customary in the business.
Necessary Expense: Appropriate, helpful, and directly connected to the business’ development and operations.
Paid or Incurred Within the Taxable Year
Expenses must be recorded in the same taxable year when the related income is earned.
Directly Attributable to Business or Profession
Must have a clear link to the taxpayer’s trade, business, or professional activity.
Properly Substantiated
Supported by invoices, receipts, and other official documents. Mere allegations are not sufficient.
Non-Deductible Expenses
The RMC clarifies that not all expenses can be deducted. The following are non-deductible:
Expenses related to tax-exempt income
Expenses related to income subject to final withholding tax (e.g., interest and dividends)
Expenses improperly charged to preferential tax rate income (e.g., under the 5% SCIT incentive)
This prevents “double benefits” where a taxpayer claims deductions on income already exempt or subject to final tax.
Key Takeaways for Businesses and Professionals
Always ensure expenses are ordinary, necessary, directly related, and well-documented.
Segregate expenses properly when dealing with active vs. passive income, and with taxable vs. exempt income.
Non-compliance may lead to disallowance of expenses and possible tax deficiencies.
Conclusion
The issuance of RMC No. 81-2025 strengthens the BIR’s framework for determining deductible expenses. By emphasizing the principles of ordinariness, necessity, attribution, and substantiation, this circular ensures that business expenses reflected in tax returns are accurate, fair, and compliant with Philippine tax laws.
Taxpayers are advised to carefully review their business expenses and maintain proper documentation to avoid disallowances and penalties.













