Losing your BIR Certificate of Registration can feel urgent, especially if a client, bank, landlord, LGU, marketplace, or BIR officer suddenly asks for your BIR Form 2303. The good news is that a lost Certificate of Registration does not cancel your business registration or TIN. You generally replace it by filing BIR Form No. 1905 with your Revenue District Office, submitting an Affidavit of Loss, and paying the documentary stamp tax required for the replacement COR.

What Is a BIR Certificate of Registration?

A BIR Certificate of Registration, commonly called the COR or BIR Form 2303, is the document issued by the Bureau of Internal Revenue showing that a taxpayer or business is registered with the BIR.

For business taxpayers, it usually shows important registration details such as:

Taxpayer name and TIN
Registered business name or trade name
Registered address
Registered line of business or activity
Registered tax types, such as income tax, VAT, percentage tax, withholding tax, or other applicable taxes
RDO code and other registration information

In everyday practice, people are often asked for their BIR COR when they:

Open a business bank account
Renew a mayor’s permit or business permit
Apply for accreditation with a client, mall, supplier, or marketplace
Register with an online platform
Prove that a freelance or professional practice is BIR-registered
Undergo BIR inspection or tax mapping

The COR is important because Philippine tax law requires taxpayers subject to internal revenue tax to register with the proper BIR Revenue District Office, either electronically or manually. Section 236 of the National Internal Revenue Code, as amended by Republic Act No. 11976 or the Ease of Paying Taxes Act, requires registration with the appropriate RDO and requires taxpayers to update registration details when needed. (Lawphil)

Can You Replace a Lost BIR Certificate of Registration?

Yes. The BIR specifically recognizes replacement of a lost COR as a registration update transaction.

The current BIR Form No. 1905, titled Application for Registration Information Update/Correction/Cancellation, includes a section for “Replacement/Cancellation of” forms and specifically lists Certificate of Registration (COR) with the reason Lost/Damaged.

For replacement of a lost COR or Authority to Print, the BIR’s 2025 Checklist of Documentary Requirements lists:

Requirement	Notes
BIR Form No. 1905	2 originals
Affidavit of Loss	1 original
Fee	₱30 loose documentary stamp tax for COR only

These requirements are also reflected in the documentary requirements section of the October 2025 BIR Form No. 1905. (Bir CDN)

Legal Basis: Why the COR Matters

Registration under the Tax Code

The main legal basis is Section 236 of the National Internal Revenue Code of 1997, as amended. It requires every person subject to internal revenue tax to register once with the appropriate BIR RDO:

Within 10 days from date of employment;
On or before commencement of business;
Before payment of any tax due; or
Upon filing of a return, statement, or declaration required by the Tax Code.

The same provision recognizes that registration may be electronic or manual and that taxpayers must update registration when there are changes. (Lawphil)

Posting the COR at the place of business

A business taxpayer should not simply keep the COR in a drawer. The COR or electronic COR should be posted conspicuously at the place of business. BIR Revenue Memorandum Circular No. 58-2023 states that the COR or electronic COR issued through ORUS or the Philippine Business Hub must be posted conspicuously in the place of business.

BIR Revenue Memorandum Circular No. 91-2024 also clarifies that online sellers need to post or display their COR; for those without a physical store, it should be posted in a conspicuous place in the business establishment that can be easily seen by the public.

This connects with Section 241 of the Tax Code, as amended, which requires certificates or receipts showing payment of taxes issued to a person engaged in business to be kept conspicuously exhibited in plain view at the place where the business is conducted. (Lawphil)

Do You Need to Replace an Old Yellow-Orange COR?

Not always.

BIR Revenue Memorandum Circular No. 58-2023 clarified that a COR printed in the old yellow-orange template remains valid and does not expire, as long as the information printed on it is still up to date. Replacement of a COR is required only if there are updates or changes in the information printed on the face of the COR. The same circular also states that an electronic COR generated by the Philippine Business Hub or ORUS is valid, does not require a signature, and bears a QR code that can be validated online.

This means:

If your old COR is still with you and the information is correct, you generally do not need to replace it just because it uses an old format.
If your COR is lost, damaged, unreadable, or unavailable, you should request a replacement.
If your registered business name, address, tax type, or activity changed, you may need a registration update, not just a simple lost-COR replacement.

Step-by-Step Guide to Replace a Lost BIR Certificate of Registration

1. Confirm your current RDO

Go to the Revenue District Office where your business or taxpayer registration is currently registered.

This is important because BIR records are maintained by RDO jurisdiction. If you changed business address before, or if your registration was transferred, do not assume that your old RDO still handles your file.

Practical ways to confirm your RDO include:

Checking any photocopy or scan of your old BIR Form 2303
Checking old BIR returns, payment forms, or registration documents
Asking your bookkeeper or accountant
Calling or emailing the BIR contact channels or the RDO
Checking your BIR registration records through available BIR online services, if accessible

If you recently moved business address and did not file a transfer of registration, the RDO may ask you to settle the transfer or update issue first.

2. Prepare BIR Form No. 1905

Use the current BIR Form No. 1905. In the form:

Fill in your TIN.
Write your registered name exactly as it appears in BIR records.
Indicate your RDO code, if known.
Under the section for replacement or cancellation, check Certificate of Registration (COR).
Under reason/details, check or indicate Lost/Damaged.
Sign the declaration portion as the taxpayer or authorized representative.

The current form expressly includes “Certificate of Registration (COR)” and “Lost/Damaged” as selectable items.

Bring at least two original copies, because the BIR checklist for replacement of lost COR/ATP requires BIR Form No. 1905 in two originals. (Bir CDN)

3. Execute an Affidavit of Loss

You need an Affidavit of Loss. This is a sworn written statement explaining that the original COR was lost and could not be found despite diligent search.

A good Affidavit of Loss should include:

Your full registered name
Your TIN
Your registered business name, if any
Your registered business address
A clear description of the lost document: BIR Certificate of Registration / BIR Form 2303
The circumstances of the loss, if known
When you discovered the loss
A statement that you made a diligent search but could not locate it
A statement that the document was not sold, transferred, pledged, or used for an unlawful purpose

For corporations, partnerships, OPCs, associations, and other non-individual taxpayers, the affidavit should usually be signed by an authorized officer or representative.

In practice, the Affidavit of Loss should be notarized if executed in the Philippines, because an affidavit is a sworn statement. Bring the original notarized affidavit to the RDO.

4. Prepare IDs and authority documents

If the taxpayer personally files the request, bring a valid government-issued ID.

If someone else will file for you, the BIR requires additional documents.

Taxpayer type	Representative document usually required
Individual, sole proprietor, professional, freelancer	Special Power of Attorney specifically authorizing the representative to request replacement of the lost BIR COR
Corporation, partnership, OPC, cooperative, association, or other non-individual taxpayer	Board Resolution, Written Resolution for an OPC, or Secretary’s Certificate naming the authorized representative and purpose
All representative transactions	Government-issued IDs of the taxpayer/signatory and authorized representative, with wet specimen signatures as required

The BIR’s 2025 checklist states that for individuals transacting through a representative, a Special Power of Attorney must indicate the specific transaction, and IDs of both taxpayer and representative are required. For corporations and non-individuals, a Board Resolution, Written Resolution for OPC, or Secretary’s Certificate must indicate the purpose and the name of the authorized representative. (Bir CDN)

5. Go to the RDO registration counter

At the RDO, proceed to the Client Support Section, Registration Counter, or the office section handling registration updates.

Submit:

Two originals of BIR Form No. 1905
Original Affidavit of Loss
Valid ID
SPA or corporate authorization documents, if applicable
Any photocopy or scan of the old COR, if available
Other supporting records the RDO may reasonably ask for to verify your registration

A photocopy of the old COR is not always mandatory, but it is very helpful. It allows the RDO officer to verify your registered name, RDO code, tax types, business activity, and address faster.

6. Pay the required documentary stamp tax

For replacement of a lost COR, the BIR checklist states a ₱30 loose documentary stamp tax for COR only. (Bir CDN)

Ask the RDO how payment should be made. Depending on the RDO’s current workflow, you may be directed to:

Pay at the RDO cashier or Revenue Collection Officer;
Use an authorized payment channel; or
Buy or pay for the loose documentary stamp tax as instructed.

Do not confuse this with the old ₱500 annual registration fee. After Republic Act No. 11976 and the BIR’s implementing guidance, the annual registration fee is no longer the usual yearly payment businesses used to make. The ₱30 amount discussed here is the documentary stamp tax for the replacement COR, not an annual renewal fee.

7. Claim the replacement COR

Once approved, the RDO will release the replacement COR or advise when it can be claimed.

In many RDOs, a straightforward replacement request may be completed within the same day or a few working days if:

Your records are easy to verify;
Your requirements are complete;
There are no unresolved registration issues;
The authorized signatory is accepted; and
The RDO has no system, printer, or workload delay.

The BIR checklist emphasizes that processing starts only upon submission of complete documents and that incomplete requirements will be returned or not processed. (Bir CDN)

Can You Replace a Lost BIR COR Online?

For many registration-related transactions, the BIR has been moving toward electronic filing through systems such as ORUS, NewBizReg, TRRA, and the Philippine Business Hub. BIR Revenue Memorandum Circular No. 91-2024 explains that taxpayers may register or process certain registration-related applications through manual RDO filing, NewBizReg, TRRA, PBH, or ORUS depending on the transaction.

For a lost COR replacement, however, many taxpayers still process it manually at the RDO because the transaction involves submission of an Affidavit of Loss, verification of records, and issuance or reprinting of the COR.

Practical approach:

Check whether your ORUS account has a relevant registration update or COR reprint option.
If there is no clear option, contact or visit your RDO.
If ORUS has an error or technical issue, RMC No. 91-2024 allows manual RDO processing when the taxpayer can present proof of error or technical issue; if BIR has issued an advisory that ORUS is unavailable, proof may not be required.

What If You Are Abroad?

If you are outside the Philippines and cannot personally go to the RDO, you can usually authorize someone in the Philippines to process the replacement.

For individual taxpayers abroad

Prepare a Special Power of Attorney authorizing your representative to:

File BIR Form No. 1905;
Submit the Affidavit of Loss;
Pay applicable fees;
Receive and claim the replacement BIR Certificate of Registration; and
Sign or receive documents necessary for that specific transaction.

If the SPA is executed abroad, the RDO may require it to be properly authenticated for use in the Philippines. For countries that are parties to the Apostille Convention, a locally notarized document with an apostille is often used in the Philippines. Some Philippine embassies and consulates also provide consular notarization for private documents such as SPAs and affidavits. The Philippine Embassy in Washington, D.C. explains that private documents such as SPAs and affidavits are generally notarized locally and then apostilled by the competent authority before being used in the Philippines, while Philippine foreign service posts also explain that documents executed abroad for use in the Philippines may need either consular notarization or an apostille, depending on the case and country. (Philippine Embassy)

For corporations or businesses with foreign directors

If the registered taxpayer is a corporation or non-individual entity, the BIR will usually look for a Secretary’s Certificate, Board Resolution, or similar authorization. If the document is signed abroad, be ready to ask the RDO whether an apostille or consular notarization is required.

Common Problems When Replacing a Lost BIR COR

The business address in BIR records is outdated

If your BIR records still show your old address, the RDO may require you to update or transfer your registration before issuing a corrected COR.

Do not simply ask for a replacement if the information is already wrong. A replacement usually reproduces or confirms existing registration details. If the registered address, trade name, or tax type is wrong, file the proper update using BIR Form No. 1905.

The taxpayer has open cases

An “open case” is a BIR record showing that the taxpayer supposedly failed to file a return or comply with a tax obligation for a certain period.

A lost COR request is a registration transaction, but in practice, some RDOs may check whether the account has unresolved issues. If open cases appear, ask for a printout or list and clarify whether they must be resolved before release of the replacement COR.

The representative’s authority is too vague

A common mistake is using an SPA that says only “to transact with government offices.” Some RDOs prefer specific wording.

Better wording is direct and specific: authorize the representative to process the replacement of the lost BIR Certificate of Registration / BIR Form 2303 with the taxpayer’s RDO, sign and submit BIR Form No. 1905, submit the Affidavit of Loss, pay required fees, and claim the replacement COR.

The taxpayer requests a certified true copy instead of replacement

A replacement COR is different from a certified true copy.

If you still have a copy and only need certification, BIR has stated in an FOI response that a taxpayer or authorized representative may request a certified true copy from the RDO having jurisdiction over the place of business. The same response mentioned a letter request, authorization documents for representatives, valid government IDs, and a certification fee not exceeding ₱100 plus ₱30 documentary stamp tax. (www.foi.gov.ph)

If the original is lost, the cleaner route is usually replacement of the lost COR using BIR Form No. 1905 and Affidavit of Loss.

Required Documents Checklist

Document	Individual / Sole Proprietor	Corporation / Non-Individual
BIR Form No. 1905	Yes, 2 originals	Yes, 2 originals
Affidavit of Loss	Yes, 1 original	Yes, 1 original, signed by authorized officer or representative
₱30 loose DST for COR	Yes	Yes
Valid government ID	Yes	ID of authorized signatory/representative
SPA	If filed by representative	Usually not enough by itself unless accepted for a specific case
Board Resolution / Secretary’s Certificate / Written Resolution for OPC	Not applicable	Yes, if filed by representative
Photocopy or scan of old COR	Helpful if available	Helpful if available

Frequently Asked Questions

How do I replace a lost BIR Certificate of Registration in the Philippines?

File BIR Form No. 1905 with your RDO, mark the request as replacement of lost or damaged COR, submit an original Affidavit of Loss, pay the ₱30 loose documentary stamp tax for COR, and claim the replacement once approved.

Is an Affidavit of Loss required for a lost BIR Form 2303?

Yes. The BIR checklist for replacement of lost COR/ATP requires one original Affidavit of Loss. (Bir CDN)

How much is the fee to replace a lost BIR COR?

The BIR’s 2025 checklist states a ₱30 loose documentary stamp tax for COR only. This is separate from any other fee that may apply to a different request, such as certification of documents. (Bir CDN)

Can someone else process my lost BIR COR replacement?

Yes, but the representative must have proper authority. For individuals, this usually means a Special Power of Attorney. For corporations and other non-individual taxpayers, the BIR checklist refers to a Board Resolution, Written Resolution for OPC, or Secretary’s Certificate naming the representative and purpose. IDs are also required. (Bir CDN)

Can I use a photocopy of my old BIR COR while waiting?

A photocopy may help prove your registration to clients or your accountant, but it is not the same as the original or replacement COR. If the original was lost and you need to post or present the COR officially, process the replacement with the RDO.

Does a BIR Certificate of Registration expire?

A COR does not expire just because it is old. BIR RMC No. 58-2023 states that even the old yellow-orange COR remains valid if the information printed on it is still up to date.

Do I need to renew my BIR COR every year?

No ordinary yearly COR renewal is required. The old annual registration fee system has been changed under the Ease of Paying Taxes Act. But you must update your BIR registration if important details change, such as registered address, business name, line of business, or tax type.

What if my business is already closed and the COR is lost?

If the business is closed, do not simply request a replacement unless the RDO specifically requires it. You may need to file for closure or cancellation of registration using BIR Form No. 1905 and submit closure requirements. If the original COR is lost, prepare an Affidavit of Loss because closure procedures may ask for original BIR permits and registration documents.

Can online sellers replace a lost BIR COR?

Yes. Online sellers registered with the BIR follow the same lost-COR replacement process. They should also remember that BIR guidance requires business taxpayers, including online sellers, to post or display the COR in the appropriate place where the business is conducted.

Key Takeaways

A lost BIR Certificate of Registration does not cancel your TIN or business registration.
The usual replacement requirements are BIR Form No. 1905, Affidavit of Loss, and ₱30 loose documentary stamp tax.
File the request with your current BIR RDO of registration.
If a representative will process the request, prepare a specific SPA for individuals or a Secretary’s Certificate, Board Resolution, or Written Resolution for non-individual taxpayers.
Old yellow-orange CORs remain valid if the information is still correct, but a lost or damaged COR should be replaced.
If your address, trade name, activity, or tax type changed, file the proper BIR registration update instead of merely asking for a replacement.