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Last updated: 7 février 2026

In the Philippines, an Affidavit of Loss of TIN ID (Tax Identification Number) is a crucial legal document required when an individual's TIN ID card is lost, stolen, or misplaced.

This sworn statement serves as formal notice to the Bureau of Internal Revenue (BIR) and other relevant entities, affirming the circumstances of the loss and facilitating the application for a replacement card or updating official records.

When is this document required?

  • Replacement of Lost TIN ID: It is a mandatory requirement by the BIR when applying for a new TIN ID card to replace a lost or damaged one.
  • Updating Records: It helps to officially declare the loss and prevent potential misuse of the lost ID, especially if it falls into the wrong hands.
  • Various Transactions: While not always the primary requirement, presenting an Affidavit of Loss may be necessary for certain financial or government transactions where the TIN ID is typically presented.
  • Proof of Loss: It serves as legal proof that the individual no longer possesses the original TIN ID.

What is a TIN and why is its ID important?

A Tax Identification Number (TIN) is a unique and permanent number issued by the Bureau of Internal Revenue (BIR) to every taxpayer in the Philippines, whether an individual or a non-individual entity.

It is essential for all tax-related transactions, including filing income tax returns, paying taxes, and engaging in various financial and employment activities.

The TIN ID card serves as a convenient and official proof of one's TIN, often required for:.

  • Employment applications and onboarding
  • Opening bank accounts
  • Processing loans
  • Applying for government benefits (e.g., SSS, Pag-IBIG, PhilHealth)
  • Business registrations
  • Receiving payments from employers or clients

Legal Requirements:

The affidavit must be executed by the individual who lost the TIN ID and must be notarized by a commissioned Notary Public in the Philippines.

Under Philippine law, making false statements in a sworn affidavit constitutes Perjury, which is a criminal offense punishable under the Revised Penal Code.

It is crucial to provide accurate details regarding the loss to avoid legal repercussions.

While a police report is generally not required for a lost TIN ID (unlike a passport or driver's license), it may be advisable to obtain one if the ID was stolen as part of a larger theft incident, for your own record-keeping and added protection against potential identity theft.

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