BIR Form 2303: Certificate of Registration Guide

TL;DR: BIR Form 2303, the Certificate of Registration or COR, is the document that lists your TIN, registered address, line of business, and every tax type you owe. You get one after primary registration through BIR’s ORUS portal or an RDO, you must display it where it can be seen, and you update it with BIR Form 1905 whenever your address, tax types, accounting period, or business details change.

What the Certificate of Registration actually is

BIR Form 2303 is issued once your primary registration with the Bureau of Internal Revenue is approved, under Section 236 of the National Internal Revenue Code (NIRC) as amended by Republic Act No. 11976, the Ease of Paying Taxes Act. Every person who becomes liable for internal revenue tax, whether an individual professional, a sole proprietor, or a corporation, has to register once with the Revenue District Office (RDO) that has jurisdiction over the place of business before that business starts operating. The COR is the BIR’s confirmation that the registration went through, and it becomes the reference document for almost everything else you file afterward.

Each registered unit gets its own COR. That means a head office has one, and each branch or facility (a warehouse, a storage area, a showroom) that is registered separately gets its own certificate too, tied to the RDO covering that specific location. A company with a head office in Makati and a branch in Cebu holds two CORs, not one, because each is a distinct registration with its own line of business declaration and tax profile.

For a foreign founder, the COR is what proves the SEC-incorporated company is also a recognized taxpayer, a separate status from incorporation itself. Banks, landlords, and clients will ask for it before they sign anything with you. A business without one, or with one that no longer matches reality, cannot legally issue invoices for VAT or percentage tax purposes and is exposed to the registration penalties covered further down.

What’s printed on the COR and what each field means

The certificate is one page, but every line on it does real work. Here’s how to read it.

The tax type table is the section that matters most day to day, because it is the BIR’s own record of what it expects from you. If your COR lists percentage tax and Form 2551Q but your business has since crossed the VAT threshold, you are filing the wrong return every quarter until you fix the certificate itself; correcting your bookkeeping alone will not do it.

Getting a COR through ORUS

BIR’s 2026 Citizen’s Charter now documents the Online Registration and Update System (ORUS), at orus.bir.gov.ph, as the standard path for both individual and non-individual (corporate) new business registrants, with manual walk-in processing kept as the fallback for cases that still need paper.

For a corporation registering its head office, the online process runs like this:

1. Create an ORUS account with a working email address and log in.
2. Fill out the online registration form and upload your requirements: your SEC Certificate of Incorporation, Articles of Incorporation, the Board Resolution or Secretary’s Certificate naming your authorized representative, a selfie of that representative holding a valid ID, and a sample of the invoices you intend to use (or proof you are buying BIR-printed invoices instead).
3. The RDO evaluates the application and checks the eREG system for duplicate TINs.
4. You receive an email notifying you of approval or denial. If approved, you pay the loose documentary stamp tax online.
5. You download your TIN confirmation, your COR, and your Authority to Print (if applicable) directly from your ORUS profile page.

According to the 2026 Citizen’s Charter, BIR’s own target for this online path, for both individual and corporate registrants, is a total processing time of three working days, against a total processing fee of ₱30, the documentary stamp tax on the certificate itself. That ₱30 DST is now essentially the entire government fee for issuance, because Republic Act No. 11976 repealed the old ₱500 annual registration fee effective January 22, 2024, with RR No. 7-2024 implementing the change on the registration side. If you registered before that date and your existing COR still shows the old annual fee schedule, it stays valid; you are simply no longer required to renew that particular payment every January.

Branch and facility registration runs on a separate but related track. It uses BIR Form 1903 (or 1901 for an individual), filed at the RDO with jurisdiction over the branch’s location, and the Citizen’s Charter puts walk-in processing for a standard branch application at one working day, again for a ₱30 DST plus whatever you spend on invoices. This is a distinct registration event with its own COR, not an update to the head office’s certificate.

Not everything moves online yet. Branch and facility registration still runs through a queuing-number counter process at the RDO rather than a pure online flow, and bulk filings of six or more applications at once, along with Large Taxpayer Division transactions, keep their own walk-in procedures. BIR Revenue Memorandum Circular No. 4-2026, issued January 15, 2026, also shows the shift is still in motion: it reiterated that registration of permanently bound loose-leaf and computerized books of accounts must go through ORUS, while extending the compliance deadlines because of ongoing system connectivity issues on the portal itself. If you are relying on ORUS for a time-sensitive filing, build in a buffer.

If you would rather have the entire primary registration, from ORUS account setup to the finished COR in hand, handled for you, that is exactly what the BIR registration service from Chamberlain does. For the fuller step-by-step walkthrough of registering a new company from SEC incorporation through to your first COR, see our guide to BIR registration for new companies.

The legal duty to display it, and what it costs you if you don’t

The Tax Code’s registration rules, as implemented by RR No. 7-2024, require every registered person to post the original COR, or the Electronic Certificate of Registration (eCOR) where issued digitally, at the place where the business is conducted, in a spot clearly and easily visible to the public. Each branch and facility displays its own COR. If you have no fixed place of business, such as a peddler, mobile vendor, or online seller with no shop, you keep the COR (or eCOR) in your possession, at your residence, or at your head office address, and produce it on demand for any BIR officer who asks.

RR No. 7-2024 extended this to digital sellers specifically: anyone conducting business through a website, social media account, or e-commerce or e-marketplace page has to display an electronic copy of the COR/eCOR on that page or platform, where a buyer visiting the page can see it. The companion poster, listed in BIR’s compromise penalty schedule as “Ask for BIR Receipt” and referred to as the Notice to Issue Receipt/Invoice (NIRI) in the 2026 Citizen’s Charter, reminds customers to demand a receipt and carries the same display obligation, sitting right alongside the COR requirement.

The penalty for skipping either one is small in isolation but adds up. BIR’s own Annex C schedule of compromise penalties lists non-display of the Certificate of Registration under Sections 236 and 275 of the NIRC: a criminal fine of not more than ₱1,000, or imprisonment of not more than six months, with a fixed compromise amount of ₱1,000. Failure to display the “Ask for BIR Receipt” poster carries the identical ₱1,000 compromise under the same sections. These are compromise penalties the BIR is willing to settle for outright; you do not want to be arguing the criminal exposure in court over a certificate you simply forgot to tape to the wall.

The bigger number is for a different failure entirely. Failure to register a branch, another line of business, or a facility at all, as opposed to registering it but not posting the certificate, is a distinct offense under Section 258 of the NIRC: a fine of ₱5,000 to ₱20,000 and imprisonment of six months to two years. Since the Ease of Paying Taxes Act introduced taxpayer size classification, Grant Thornton’s tax alert on the post-EOPT sanctions puts the compromise amount for this violation at ₱5,000 for a Micro taxpayer, ₱15,000 for a Small taxpayer, ₱20,000 for a Medium or Large taxpayer, and ₱50,000 where excise tax is involved, so the amount actually assessed depends on which bracket the taxpayer falls into.

Put a number on what stacking looks like. Say a Small-taxpayer trading company opens a second outlet and starts selling from it before filing the branch registration. On audit, that is failure to register a branch: a ₱15,000 compromise penalty at that classification, on top of any deficiency assessment for the unreported sales that outlet already made. If the company later registers the branch correctly but forgets to post the COR once it arrives, that is a separate ₱1,000 non-display penalty. Two paperwork gaps, ₱16,000 in avoidable compromise penalties, before the BIR has assessed a single peso of the underlying tax.

Updating the COR: when BIR Form 1905 applies

BIR Form 2303 is not something you edit yourself. Once your registration facts change, you file BIR Form 1905, the Application for Registration Information Update/Correction/Cancellation, and the BIR reissues the COR to reflect the update. Since ORUS is also the Online Registration and Update System, a number of these updates, including an address change, a tax type addition, and a lost-COR replacement, can be lodged through your ORUS account rather than a physical RDO visit, though the RDO remains the fallback for anything ORUS does not yet handle. The current version of the form (October 2025 ENCS) lays out exactly what it covers:

• Change of registered address, whether a transfer within the same RDO or a move to a different RDO’s jurisdiction, with old and new RDO codes recorded.
• Change or addition of tax type, including cancelling one tax type and re-registering another, such as moving from percentage tax to VAT, or adding expanded withholding tax once you start paying suppliers subject to it.
• Change in accounting period, for a non-individual taxpayer moving between calendar and fiscal year, or from one fiscal period to another.
• Change or addition of registered activity or line of business, when the company starts doing something materially different from what its original PSIC code describes.
• Change of facility type or details, for adding a warehouse, storage place, showroom, or similar facility under an existing registration.
• Replacement of a lost or damaged COR, Authority to Print, Tax Clearance Certificate, or TIN card.
• Change of contact details, authorized representative, or the names of incorporators, officers, or partners tied to the registration.
• Closure of business or cancellation of registration, including permanent closure of a branch or of the head office.

A brand-new branch is a slightly different case, worth being precise about. Opening one is its own registration event, using Form 1903 (or 1901) at the branch’s RDO, and it produces its own COR from scratch, the way a new company would. Form 1905 comes in afterward, for anything that changes about that branch, or the head office, once it already has a certificate. If you are opening a location and simultaneously changing something else, such as consolidating two registered facilities or updating the head office’s accounting period at the same time, expect to file both forms.

BIR’s Citizen’s Charter does not publish one uniform processing time for a Form 1905 filing on its own, because the turnaround depends heavily on what you are actually changing; a straightforward address correction moves faster than a tax type change that needs BIR to recompute your ATC codes. Confirm the expected timeline with your RDO when you file, and do not assume same-day service.

Common mistakes that leave your COR out of sync

Two mistakes account for most of the mismatches Chamberlain sees between what a foreign-owned company’s COR says and what the business is actually doing.

The first is the wrong PSIC code, or line of business description, at initial registration. The examining officer interviews you, assigns a line of business code, and that code drives the tax type questionnaire the BIR runs behind the scenes. Describe your business loosely, in a rush, or through a representative who does not fully understand the model, and you can end up registered under a code that does not match your actual revenue stream. The mismatch usually stays invisible until you try to register invoices for a service the COR does not list, or an auditor pulls your registration file next to your actual sales and asks why they do not line up. The fix is a Form 1905 filing to correct or add the registered activity, but it is far cheaper to get the description right the first time than to correct it later.

The second is registering the wrong tax type against your expected revenue. Under the NIRC as amended, a business with gross sales or receipts that do not exceed ₱3,000,000 in a 12-month period is generally subject to the 3% percentage tax under Section 116, filed quarterly on Form 2551Q, unless it opts into VAT voluntarily. Cross that ₱3,000,000 threshold, whether based on actual sales or a reasonable projection, and the law requires VAT registration instead, at 12%, with input tax credits available but full invoicing and bookkeeping obligations attached.

Work through a concrete case. A design consultancy projects ₱2,750,000 in gross receipts for its first year and registers non-VAT, so its COR lists percentage tax and Form 2551Q. By September, cumulative receipts hit ₱3,050,000, already ₱50,000 past the threshold. The amended NIRC requires this business to register for VAT once it becomes liable; the statute does not set out a specific grace period counted in days from the crossing date, so the safer reading is to treat the month the threshold is crossed as the trigger and file the Form 1905 tax-type change immediately, rather than waiting for year-end. Filing late does not undo the liability. VAT applies to the transactions from the point the threshold was crossed regardless of when the COR catches up, and the firm’s invoices and books need to switch over at the same time the tax type does.

BIR 2303 versus BIR 2307: two forms that get confused

BIR Form 2303 and BIR Form 2307 are one digit apart and both get called a “certificate,” which is most of why people mix them up, but they do completely different jobs. The COR is your registration identity document: it exists once per registered unit, gets issued by the BIR, and stays valid until you close or change the registration it describes. Form 2307, the Certificate of Creditable Tax Withheld at Source, is issued to you by a customer or client who paid you and withheld expanded withholding tax on that payment. It is not a registration record at all; it is proof of tax already withheld on a specific transaction, which you then use to offset your own income tax due when you file. A single business can receive dozens of 2307s in a year from different clients, while it holds exactly one COR per registered unit. If you need the mechanics of claiming credit for withheld tax, that belongs in a separate guide to Form 2307, not this one.

This guide is general information, not legal advice on your specific facts. Book a consultation if you want a fixed-scope review of your registration before you file.