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How to Spot Fake or “Unauthorized” LOAs: A Business Owner’s Guide

Home » Blog » How to Spot Fake or “Unauthorized” LOAs: A Business Owner’s Guide

How to Spot Fake or “Unauthorized” LOAs: A Business Owner’s Guide

January 20, 2026
Last Updated: Jan. 20, 2026 @ 5:49 AM

How to Spot Fake or “Unauthorized” LOAs: A Business Owner’s Guide

How to Spot Fake or “Unauthorized” LOAs: A Business Owner’s Guide

TL;DR (Quick Summary)

A BIR Letter of Authority (LOA) is required before any tax audit can legally begin. With the rise of fake LOAs in the Philippines, business owners must know how to verify LOA legitimacy, identify red flags, and protect themselves from unauthorized audits. This guide explains how to spot a fake or unauthorized LOA, how BIR LOA verification works, and what to do if you receive a suspicious audit notice. Loft Spaces assists businesses in Metro Manila and Cebu with compliance review and audit support.

Quick Answer: How Do You Spot a Fake or Unauthorized LOA?

A fake or unauthorized LOA often has missing signatures, incorrect details, improper issuance, or comes from unauthorized BIR personnel. A legitimate Letter of Authority from the BIR must be officially issued, properly signed, and verifiable with the issuing Revenue District Office (RDO).

Why This Matters: The Current LOA Issue in the Philippines

In recent months, many Philippine businesses—especially SMEs—have reported receiving suspicious or questionable audit notices. These notices often pressure companies into immediate compliance, payments, or document submission without proper verification.

This has made spotting fake LOA Philippines cases a growing concern.

Understanding LOA validity in the Philippines is now a critical part of business protection.

What Is a Letter of Authority (LOA) from the BIR?

A Letter of Authority (LOA) is an official document issued by the Bureau of Internal Revenue (BIR) authorizing specific revenue officers to examine a taxpayer’s books and records.

Key Facts About a Valid LOA:

  • It authorizes a tax audit

  • It specifies:

    • The taxpayer’s name

    • Taxable years covered

    • Assigned revenue officers

  • It must be approved and signed by the proper BIR authority

Without a valid LOA, no audit should proceed.

What Is a Fake or Unauthorized LOA?

A fake LOA or unauthorized LOA is any audit document that:

  • Was not properly issued by the BIR

  • Was issued by someone without authority

  • Contains errors that invalidate it

  • Is reused, altered, or expired

In many cases, businesses unknowingly entertain audits that are legally invalid, exposing them to unnecessary risk.

Can the BIR Audit a Business Without an LOA?

No.
A BIR audit is not valid without a proper LOA, except for very limited cases (e.g., tax fraud investigations under different legal instruments).

AEO-Friendly Answer:

Can BIR audit without LOA?
Generally, no—a standard tax audit in the Philippines requires a valid Letter of Authority.

How to Tell If an LOA Is Legitimate

Here’s a practical checklist for spotting fake LOA documents:

✅ What a Legitimate LOA Should Have

  • Official BIR letterhead

  • Correct taxpayer name and TIN

  • Clear taxable period covered

  • Names of authorized revenue officers

  • Proper approving authority signature

  • Issuance date within the allowable audit period

Red Flags of a Fake or Unauthorized LOA

Be cautious if you notice any of the following:

  • ❌ Missing or photocopied signatures

  • ❌ Incorrect business name or TIN

  • ❌ Officers listed who do not match BIR records

  • ❌ Pressure to submit documents immediately

  • ❌ Requests for informal settlements

  • ❌ LOA issued by the wrong RDO

  • ❌ Expired or reused LOA

These are common indicators of unauthorized LOA activity in the Philippines.

How to Verify a BIR Letter of Authority

Step-by-Step: BIR LOA Verification

  1. Request a copy of the LOA

  2. Check the issuing RDO

  3. Confirm the approving signatory

  4. Verify officer names

  5. Contact the issuing BIR office directly

  6. Consult a professional before submitting records

AEO-Friendly Question Answered:

How to verify the BIR Letter of Authority?
You can verify an LOA by confirming its details with the issuing BIR RDO and ensuring it complies with BIR audit rules.

What Should You Do If You Receive a Suspicious LOA?

If something feels off, pause immediately.

What You Should Do:

  • Do not submit documents right away

  • Request time for verification

  • Ask for professional assistance

  • Document all communications

  • Verify directly with the BIR

Entertaining an invalid audit can create long-term compliance risks.

What Happens If a Business Entertains an Unauthorized LOA?

Allowing an audit without a valid LOA may lead to:

  • Invalid assessments

  • Unnecessary penalties

  • Exposure to audit abuse

  • Difficulty contesting findings later

Even worse, businesses may feel pressured into settlements that are not legally required.

Are There Penalties for Fake or Abusive BIR Audits?

Yes. BIR officers who engage in unauthorized audits may face:

  • Administrative sanctions

  • Disciplinary action

  • Criminal liability in severe cases

However, enforcement depends heavily on proper documentation and timely action by the taxpayer.

Why Businesses Are Vulnerable to Fake LOAs

Many SMEs:

  • Lack of in-house tax experts

  • Are unfamiliar with audit rules

  • Fear penalties and disruptions

  • Assume all BIR notices are valid

This is why education and professional support are critical.

How Loft Spaces Helps Businesses Protect Themselves

At Loft Spaces, we help businesses in Metro Manila and Cebu navigate compliance challenges—including LOA verification and audit support.

Our Support Includes:

  • LOA review and validation

  • Audit readiness checks

  • Compliance documentation review

  • Guidance on dealing with BIR audits

  • Professional referrals when needed

We help you respond correctly—not react emotionally.

Frequently Asked Questions (FAQ)

What is a Letter of Authority (LOA) from the BIR?

It is a legal document authorizing BIR officers to conduct a tax audit for a specific taxpayer and period.

What is a fake or unauthorized LOA?

A document that does not meet legal issuance requirements or is issued by unauthorized personnel.

How can I tell if an LOA is legitimate?

Check signatures, issuing authority, officer names, and verify with the BIR RDO.

Can the BIR audit a business without an LOA?

Generally, no—standard audits require a valid LOA.

What are the red flags of a fake BIR LOA?

Incorrect details, missing signatures, pressure tactics, or improper issuance.

How do I verify a BIR Letter of Authority?

Confirm directly with the issuing BIR office or through professional assistance.

What should I do if I receive a suspicious LOA?

Pause, verify, and seek professional guidance before responding.

What happens if a business entertains an unauthorized LOA?

It may lead to invalid assessments and unnecessary compliance risks.

Are there penalties for fake or abusive BIR audits?

Yes, but businesses must document and report properly.

Should I seek professional help when dealing with an LOA?

Yes—especially to avoid mistakes that could cost time and money.

Final Thoughts: Protect Your Business, Stay Informed

With the rise of fake LOA Philippines cases, business owners must be proactive, not reactive. Knowing how to spot unauthorized LOAs, understanding BIR audit rules, and seeking the right support can protect your business from unnecessary stress and financial exposure.

If you’re unsure about an LOA you received, don’t guess—verify.

📍 Loft Spaces supports businesses across Metro Manila and Cebu, helping you stay compliant, confident, and protected.

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