BIR tightens risk-based tax audits under new program

MANILA — The Bureau of Internal Revenue (BIR) has rolled out a new nationwide audit program that strengthens risk-based taxpayer selection, standardizes audit procedures, and imposes tighter accountability on revenue officers.

The reforms are intended to make tax examinations more predictable and less dependent on individual discretion while directing government audit resources toward higher-risk cases.

The program also seeks to protect taxpayers from duplicative or unauthorized examinations by generally limiting audit authority to a single electronic Letter of Authority for each taxpayer and taxable year.

BIR Commissioner Charlito Martin R. Mendoza signed Revenue Memorandum Order No. 22-2026, or RMO No. 22-2026, which was issued on Aug. 24, 2026.

The order consolidates the BIR’s previous audit programs and builds on reforms introduced through RMO No. 1-2026 earlier this year.

RMO No. 22-2026 establishes uniform policies, guidelines, and procedures for tax audits conducted by investigating offices nationwide.

“This new BIR Audit Program strengthens both sides of the process—fairness for taxpayers and accountability within the BIR. Audits must follow clear rules and proper procedures, and our revenue officers must be able to support the assessments they issue with facts and law,” Commissioner Mendoza said.

For taxpayers, the program reinforces the Single-Instance Audit Framework.

Under the framework, audit authority is generally limited to one electronic Letter of Authority per taxpayer for each taxable year, subject to specified exceptions.

A Letter of Authority authorizes designated BIR officers to examine a taxpayer’s books, records, and other information for the tax types and periods specified in the document.

Under the new program, examinations must remain limited to the tax types and taxable periods covered by the authority issued.

The BIR is also strengthening the way it identifies Priority Cases for examination.

Taxpayers under this category will be selected through system-assisted and risk-based processes using verifiable data.

Taxpayer identities will be kept anonymized during the selection and assignment process as far as practicable to reduce discretion.

Workload and eligibility controls will also govern how audit cases are distributed among investigating personnel.

The program provides separate rules for Mandatory Cases, which are subject to examination based on circumstances or requirements prescribed by the BIR.

RMO No. 22-2026 also institutionalizes the Revalida, described by the bureau as an “Audit of Auditors.”

Under the Revalida system, audit reports and tax assessments may undergo technical and quality review.

The review will determine whether audit findings are supported by facts and law and whether taxpayers were afforded due process.

Revenue officers and officials are required to follow prescribed audit procedures, timelines, documentation, and monitoring requirements.

Unauthorized audits, improper classification of cases, unjustified delays, and other violations may result in administrative sanctions and other liabilities under existing laws and regulations.

The framework advances the BIR DARES agenda in the areas of Audit Reform and Accountability and Digital and Data Transformation.

The bureau said its expanded use of data and standardized controls is designed to focus limited audit resources on taxpayers presenting higher compliance risks.

The approach is also intended to strengthen safeguards for taxpayers by limiting unnecessary uncertainty during tax examinations.

The reforms form part of the BIR’s broader taxpayer-centric approach to tax administration, which seeks to combine more effective enforcement with clearer and more predictable procedures.

The BIR said the program supports President Ferdinand R. Marcos Jr.’s directive to restore trust in government and improve public service.

It also aligns with Finance Secretary Frederick D. Go’s push to improve the ease of doing business by making government processes more predictable and reducing unnecessary uncertainty for taxpayers and investors.

For businesses, clearer audit rules can affect compliance costs and investment decisions because tax examinations can require substantial time, documentation, and management resources.

For the government, risk-based auditing is intended to concentrate enforcement efforts on cases where available data indicate a greater likelihood of noncompliance rather than relying primarily on broad or discretionary examinations.

“When we began our comprehensive audit reforms at the start of the year, we committed to clearer rules, stronger safeguards, and greater accountability in the conduct of audits. This new BIR Audit Program delivers on that commitment and advances our taxpayer-centric approach to tax administration. Fair treatment of taxpayers and firm enforcement of the tax laws have to go together. A credible audit system requires both,” Commissioner Mendoza said.