Received a BIR Letter of Authority (LOA)? What Businesses Must Do Next in the Philippines

Executive Summary

Receiving a Letter of Authority (LOA) from the Bureau of Internal Revenue (BIR) can be concerning for any business owner. It means that the BIR has authorized designated revenue officers to examine certain books, records, and tax information to determine whether the taxpayer has complied with applicable tax laws.

However, receiving an LOA does not automatically mean your business has committed a tax violation or owes additional taxes.

An LOA generally marks the beginning of a formal tax examination. How your business responds can affect the progress of the audit and the resolution of any findings.

Before submitting documents or discussing potential tax deficiencies, businesses should verify the LOA, identify the authorized revenue officers, review the taxes and periods covered, and organize their accounting records.

Understanding your rights and responsibilities during a BIR tax audit is the first step toward protecting your business.

What Is a BIR Letter of Authority?

A BIR Letter of Authority is an official document authorizing designated revenue officers to examine a taxpayer's books of accounts and other relevant records for specified tax periods.

It provides the legal authority for the officers identified in the LOA to conduct the examination within its stated scope.

A typical LOA identifies the taxpayer, the revenue officers authorized to conduct the audit, and the taxable period or periods being examined.

Depending on the circumstances, the examination may involve income tax, value-added tax (VAT), withholding taxes, percentage tax, or other applicable internal revenue taxes.

An LOA should not be confused with a tax assessment.

The LOA authorizes the examination. A tax assessment communicates the BIR's determination of an alleged tax deficiency.

Why Does the BIR Issue an LOA?

The BIR conducts tax examinations to verify whether taxpayers have accurately reported their income, claimed allowable deductions, declared taxable transactions, and paid the correct taxes.

An audit may involve comparing tax returns with financial statements, invoices, books of accounts, withholding tax records, and information obtained from other sources.

For example, discrepancies between reported sales and supporting accounting records may raise questions that require further examination.

However, the issuance of an LOA does not, by itself, establish that the taxpayer committed an offense.

Step-by-Step Guide: What to Do After Receiving a BIR LOA

Step 1: Verify the Authenticity and Details of the LOA

Before allowing an examination to proceed, carefully review the document.

Check the taxpayer's registered name and TIN, the taxable periods covered, the issuing authority, and the names of the authorized revenue officers.

Businesses should also verify the LOA through the appropriate BIR office or official verification channel.

If the LOA contains inconsistencies or raises questions about the authority of the examining officers, seek clarification before proceeding.

Step 2: Confirm the Authority of the Revenue Officers

A valid LOA is important because revenue officers must act within the authority granted to them.

The Supreme Court has emphasized the importance of proper authorization in BIR tax examinations.

If the officers conducting the audit are different from those identified in the LOA, the business should determine whether a proper replacement or reassignment authority has been issued.

The validity of an examination depends on the applicable legal requirements and the circumstances of the case.

Step 3: Identify the Taxes and Periods Covered

An LOA does not necessarily authorize an unrestricted examination of every business transaction or taxable year.

Review the tax periods and scope stated in the document.

This helps the company identify which accounting records are relevant and whether particular document requests fall within the examination.

Step 4: Organize the Required Documents

Prepare the relevant records in an orderly manner.

These commonly include:

• Annual and quarterly tax returns, with proof of filing and payment

• Audited financial statements and books of accounts

• Sales invoices, purchase records, and supporting schedules

• Contracts, withholding tax certificates, and reconciliation reports

  
  

The actual documents required will depend on the nature of the business and the examination.

Businesses should maintain copies of documents submitted to the BIR and keep a record of submission dates and acknowledgments.

Step 5: Designate an Authorized Company Representative

A BIR audit often involves communication between revenue officers, accountants, finance personnel, and company management.

Designating a responsible representative can help ensure that requests are properly received, documented, and addressed.

Where necessary, the company may engage a CPA or legal counsel to assist with reviewing the LOA, preparing explanations, and evaluating the tax issues involved.

Step 6: Review Potential Discrepancies Before Responding

Before submitting explanations, compare the company's tax returns with its financial statements and accounting records.

Identify possible differences involving reported sales, deductible expenses, withholding taxes, VAT declarations, and supporting documents.

Not every discrepancy automatically results in a deficiency tax.

Some differences may arise from timing, accounting classifications, reconciliation adjustments, or other legitimate circumstances.

A careful review helps the business prepare accurate explanations supported by documentary evidence.

Step 7: Respond to BIR Findings Through the Proper Procedure

After examining the records, the BIR may identify discrepancies requiring discussion or clarification.

Depending on the applicable audit procedures, these may be communicated through a Notice of Discrepancy (NOD).

If the matter remains unresolved, the BIR may proceed with the assessment process, including the issuance of a Preliminary Assessment Notice (PAN), where required, and subsequent notices under the governing rules.

Businesses should respond within the applicable periods and retain complete records of all communications.

An LOA is not the same as an NOD, PAN, or Final Assessment Notice (FAN). Each document serves a different purpose in the tax examination process.

Risks and Penalties: What Happens if You Ignore a BIR LOA?

Ignoring a valid BIR Letter of Authority can create serious compliance problems.

Taxpayers are generally required to maintain proper books and records and comply with lawful examination requests.

Failure to cooperate may lead to further enforcement action, including compulsory production of records where legally authorized.

If the examination identifies unpaid taxes, the BIR may pursue deficiency assessments, subject to the required procedures. Depending on the circumstances, additional amounts may include applicable surcharges, interest, and compromise penalties.

However, receiving an LOA does not automatically result in a penalty or tax deficiency.

The BIR must follow the applicable rules on examination, assessment, and taxpayer due process.

Practical Examples

Example 1: A Corporation Receives an LOA for a Previous Taxable Year

ABC Corporation receives an LOA covering its 2024 taxable year.

Before providing documents, its accounting team verifies the authority, identifies the relevant tax returns, and reconciles its financial statements with its reported sales and expenses.

This preparation helps the company respond to the examination in an organized manner.

Example 2: A Different Revenue Officer Takes Over the Audit

XYZ Corporation receives an LOA naming two revenue officers. Several months later, another officer informs the company that they will continue the examination.

XYZ should request and verify the appropriate replacement authority before allowing the substitute officer to conduct the examination.

The Supreme Court has ruled that reassignment of examining officers requires proper authorization. The BIR's RMC No. 014-2026 likewise clarifies the treatment of replacement electronic LOAs under the revised 2026 audit procedures.

Example 3: The BIR Finds Differences in Reported Sales

DEF Corporation receives an LOA, and the BIR identifies differences between the company's VAT returns and financial statements.

Instead of immediately accepting the alleged deficiency, the company reviews its accounting records and prepares reconciliations explaining the differences.

Supporting documents may help clarify whether the discrepancies represent actual underreported taxable sales or legitimate accounting differences.

Frequently Asked Questions

1. Does receiving a BIR LOA mean my business owes additional taxes?

No. An LOA authorizes a tax examination. Any deficiency tax must be determined through the applicable examination and assessment procedures.

2. Can I refuse a BIR tax audit?

Taxpayers generally must comply with lawful BIR examinations. However, they may verify the authority of examining officers and raise legitimate objections concerning the examination's scope or procedure.

3. Can the BIR replace the revenue officers named in an LOA?

Yes,

Subject to proper authorization. A replacement electronic LOA may be issued to preserve continuity when authorized officers are reassigned.

4. How many years can the BIR examine?

The general prescriptive period for assessing internal revenue taxes is three years under Section 203 of the National Internal Revenue Code, subject to the applicable starting date and statutory exceptions.

Certain circumstances, including fraud or failure to file a return, may involve different periods.

5. What happens after the BIR completes its examination?

The BIR may close the examination without a deficiency assessment or proceed with findings and notices under the applicable assessment procedures.

Taxpayers should carefully review any NOD, PAN, or FAN received because each document has different procedural implications.

6. Should I engage a lawyer or CPA after receiving an LOA?

Professional assistance can be particularly useful when the examination involves substantial transactions, complex accounting records, potential tax deficiencies, or questions concerning the validity of the audit.

A CPA can assist with accounting reconciliations, while legal counsel can evaluate procedural compliance and available remedies.

Key Takeaway: Preparation Matters When Your Business Receives an LOA

Receiving a BIR Letter of Authority should prompt a careful review of your company's tax compliance and accounting records.

The first priority is to verify the authority, understand the scope of the examination, organize supporting documents, and establish a proper response process.

Businesses should also understand that tax examinations are subject to legal requirements intended to protect taxpayer rights.

Taking these steps early can help reduce unnecessary disputes, improve communication with the BIR, and ensure that any findings are properly evaluated.

Call-to-Action: Received a BIR Letter of Authority?

Aureada CPA Law Firm provides legal, accounting, and tax advisory assistance to businesses undergoing BIR examinations and tax assessments.