HOW-TO

How to Get Your BIR Certificate of Registration (Form 2303)

Your BIR Form 2303 proves your business or practice is registered. Here is how to apply through ORUS or your RDO, step by step.

Step by step

1. Confirm you need a COR and have a TINThe COR is for people and entities doing business or practising a profession. You may use only one TIN for life — having more than one is illegal, so if you already have a TIN from past employment, update that record rather than applying for a new number.
2. Create or sign in to your ORUS accountGo to orus.bir.gov.ph (linked from bir.gov.ph under eServices). Choose New Registration, pick Individual or Non-Individual, accept the terms, and enter your details using a permanent official email, since BIR notices are sent there.
3. Verify your email within the time limitORUS sends a verification email, reportedly with a short window to confirm. Check your spam folder if it does not arrive, and finish verification before the link expires.
4. Enter your business details and upload documentsProvide your trade name, address, line of business and tax types, and upload a valid government ID plus your business-registration proof (DTI certificate for sole proprietors, SEC documents for corporations, or CDA registration for cooperatives). Confirm the exact list on bir.gov.ph.
5. Pay any required feePay the loose documentary stamp tax (reported around PHP 30 as of 2026) through the available channels. Amounts and whether other fees apply can change, so confirm current fees before paying.
6. Download or claim your Certificate of RegistrationOnce approved, download and print your electronic COR (Form 2303) from ORUS, or claim it from your RDO if you filed manually. Keep it safe and note the returns listed on it.
7. Meet your post-registration dutiesComply with the invoicing requirement (BIR Printed Invoice or an approved Authority to Print / accredited system) and start filing the returns shown on your COR by their deadlines.

Why the Certificate of Registration matters

The BIR Certificate of Registration, printed on Form 2303 and usually just called the COR, is the document that turns you from an unregistered earner into a recognised taxpayer. It carries your Taxpayer Identification Number, your registered name and address, the line of business you declared, and the specific tax returns the Bureau expects you to file. Banks ask for it when you open a business account, clients ask for it before they release payments, and government agencies ask for it when you bid for contracts. In short, it is the backbone of doing business legitimately in the Philippines.

Because it lists your filing obligations, the COR also tells you what your calendar looks like for the rest of the year. If percentage tax, quarterly income tax and an annual return appear on it, those are the returns you are now on the hook for. Reading it carefully on day one saves a great deal of confusion later.

Online through ORUS, or in person at the RDO

The Bureau has been steadily moving registration online through the Online Registration and Update System, reached at orus.bir.gov.ph and linked from the eServices section of bir.gov.ph. For many applicants this is now the default path: you create an account, verify it by email, enter your details, upload your supporting documents, settle any small fee, and download the electronic certificate once it is approved. The alternative is the traditional route at the Revenue District Office that covers your address, where you submit the same information on paper and claim the certificate in person.

Which path is smoother depends on your circumstances and how your RDO is operating at the time. The important thing is that both lead to the same Form 2303. Whichever you choose, use a permanent email address you control, because the Bureau sends notices there and some verification steps expire quickly.

One TIN, for life

One rule deserves emphasis before you apply. Every taxpayer in the Philippines is entitled to exactly one TIN, and holding more than one is against the law. People who had a TIN issued through a previous employer sometimes assume they need a fresh number when they start a business. They do not. In that situation you update and build on the TIN you already have, usually by transferring your record to the correct RDO and adding your new registration, rather than applying for a second number that would put you in breach of the one-TIN rule.

Fees, documents and timelines change

As of 2026, reports describe a modest loose documentary stamp tax in the region of thirty pesos for online registrants, along with the usual requirement to prove your identity and your business registration. Treat those figures as a guide rather than gospel. The Bureau revises forms, checklists and fees regularly, and the registration forms were themselves updated in 2025. Before you pay anything or assemble your paperwork, confirm the current amounts and the exact document list on bir.gov.ph or with your RDO. Submitting a complete set the first time matters, because incomplete applications are simply returned and not processed, which can cost you days.

After you receive Form 2303

Getting the certificate is the start, not the finish. Registration comes with an invoicing obligation, so you will either use BIR Printed Invoices or secure an authority to issue your own receipts through an approved system before you bill a single client. From there you file the returns listed on your COR by their deadlines, keeping orderly records of income and expenses so each filing is straightforward. Keep the certificate itself somewhere accessible, both digitally and on paper, since you will be asked for it more often than you expect.

It also pays to understand that the COR is a living record rather than a one-time document. When your circumstances shift, say you add a new line of business, change your trade name, move premises, or wind the business down, those changes are reflected by updating your registration, not by quietly ignoring them. Letting your certificate drift out of step with reality is how taxpayers end up with mismatched records, filings in the wrong office, or notices they did not expect. Treating the COR as something you maintain, rather than file away and forget, keeps the rest of your tax life predictable.

A note on scope

This guide explains the general process of obtaining your Certificate of Registration; it is not tax advice. Your exact obligations, the tax types that apply to you, and the amounts you owe depend on your specific situation. For those questions, speak to a licensed accountant or tax practitioner, or ask your RDO directly. Gabay is an independent civic how-to resource and is not the BIR or any government agency, so always treat bir.gov.ph and orus.bir.gov.ph as the authoritative word.

Gabay is an independent guide and is not affiliated with any government agency. Fees, links and steps can change — always confirm on the official portal before you act. This is general information, not legal or financial advice.