The short answer: Covered Philippine taxpayers must issue electronic invoices on or before 31 December 2026. Before that, they need a Permit to Issue (PTI) Electronic Invoice from the BIR, and an EIS Certification within six months of getting it. Sending sales data to the BIR is a separate step that starts later, once the BIR issues its guidelines.
That is the headline. The detail is where businesses get caught, so the rest of this guide goes through it in the order people ask about it.
One caution first. This is general information, not legal or tax advice, and the BIR is still releasing guidance. Have your tax adviser confirm how it applies to you.
Is the 31 December 2026 e-invoicing deadline still on?
Yes. The date was set by Revenue Regulations No. 26-2025, which pushed back the original March 2026 start. On 22 September 2026 the BIR issued Revenue Memorandum Circular (RMC) No. 98-2026, which repeats the 31 December deadline and explains how e-invoices are to be issued.
The Commissioner does have room to extend the period again. Plan as if that will not happen. A draft of the circular kept the same date, and the final one did too.
The key chain of rules, in plain order:
- Sections 237 and 237-A of the Tax Code (as amended by the CREATE MORE Act) give the legal basis.
- RR 11-2025 set up the e-invoicing and electronic sales reporting framework.
- RR 26-2025 moved the compliance date to 31 December 2026.
- RMC 98-2026 explains what counts as an e-invoice and introduces the PTI process.
Who must comply with BIR e-invoicing in Phase 1?
The first group covers four types of taxpayer:
- E-commerce and internet-transaction businesses classed as small, medium or large. That can include online sellers, marketplaces, digital service providers and delivery platforms.
- Large Taxpayers Service (LTS) taxpayers.
- Large taxpayers under the EOPT Act and RR 8-2024, generally those with gross sales of around PHP 1 billion or more.
- Businesses using a Computerized Accounting System (CAS), Computerized Books of Accounts (CBA) with electronic invoicing, or other invoicing software.
Micro taxpayers are exempt, though they can adopt e-invoicing voluntarily after securing a PTI from their Revenue District Office (RDO).
POS users, exporters and registered business enterprises are expected in a later group, with deadlines still to be set. If you also fall into the first group through your accounting software, the first-group rule applies to you.
Two points people miss. If you are covered, the head office and every branch must issue e-invoices, even if the covered activity happens at only one branch. And once you are covered you stay covered if your classification later drops, unless the BIR says otherwise.
What counts as a valid BIR e-invoice?
Under RMC 98-2026 an invoice qualifies only if it meets all three conditions:
- It is generated by a registered, approved or accredited accounting or invoicing system.
- It is issued to the buyer electronically, for example by email, an app or a customer portal.
- Its data is structured so it can be extracted, processed and eventually transmitted to the BIR.
That rules out a lot of what businesses do today:
- Invoices made in Word, Excel, Google Docs or Google Sheets
- Manually prepared invoices saved as PDF and emailed
- Scans or photos of paper invoices
- System invoices that can only be printed
- Anything issued before your PTI is granted
A printed copy of a valid e-invoice is fine, for example for a buyer who asks for one. The original just has to have been generated and issued electronically.
What is the PTI Electronic Invoice, and why does it matter now?
The PTI is the piece most guides mention in one line. It deserves more attention because it sets your real timeline.
The PTI Electronic Invoice is the BIR’s permission to issue e-invoices through your approved system. It is separate from the CAS Permit to Use or Acknowledgement Certificate you may already hold. Having one does not give you the other.
You file with the RDO or Large Taxpayer Office where you are registered. The BIR says it will evaluate a complete application within 20 working days. A draft of the circular described the supporting papers as a sworn statement of compliance, a process flow, a sample invoice and proof of system registration. Check the final circular and your RDO for the exact list.
Now do the arithmetic. Twenty working days is about four weeks, and that assumes a complete application with no back and forth. Late-year holidays make it longer. You cannot issue valid e-invoices until the PTI is in hand. So if you want to be issuing by 31 December, your application should be going in around now, not in December.
What is EIS Certification?
EIS Certification confirms that your system can extract, process and transmit sales data to the BIR’s technical standards. It is done through online testing on the BIR’s EIS Certification Portal. There are five mandatory tests, or seven if your system uses an API callback.
You must complete it within six months of your PTI being issued. Miss that and the PTI can be revoked.
This is also where many businesses discover their data problems. A system can look fine on screen and still fail a structured-data test because of missing TINs, inconsistent tax codes or fields mapped wrongly.
E-invoicing versus electronic sales reporting: what is due on 31 December?
This is the most important distinction in the whole topic, and some websites still blur it.
- Electronic invoicing means issuing compliant e-invoices to your customers. That is what is due by 31 December 2026.
- Electronic sales reporting means transmitting structured sales data to the BIR. That becomes mandatory only after the BIR issues its implementing guidelines.
- A Permit to Transmit (PTT) only becomes relevant when the BIR directs you to start reporting.
You may see articles saying invoice data must reach the BIR within three calendar days. Those descriptions come from the EIS design and earlier materials. RMC 98-2026 treats reporting as a later, separate obligation. Until the BIR says otherwise, the safe reading is that 31 December is about issuing, not transmitting.
That does not mean you can ignore reporting. A system that already produces clean, structured data will adapt much faster when reporting starts.
The practical rules that trip businesses up
These are the operational details that rarely make it into summaries.
Corrections. An issued e-invoice cannot be deleted, edited or altered. If the amount goes down, issue a credit note. If it goes up, issue a new e-invoice. Detailed rules on sales adjustments are still to come from the BIR.
Downtime. If your system, internet or power fails, you still have to invoice. Use BIR-authorised manual invoices, then replace each one with an e-invoice that references the manual invoice number once the system is back. Keep stock of those manual invoices and write down who owns the process. One tax commentator has noted that a backup cap of 1,000 invoices could be too low for high-volume businesses, so ask your RDO what applies to you.
Changing software. The PTI names the system it covers. Switching to a different e-invoicing system, or changing its core platform details, needs a new or amended PTI. So think twice about swapping systems in the middle of the rollout.
Branches. The head office and each branch get a PTI under the same number. If different branches run different invoicing systems, each system needs its own PTI.
Possible new invoice fields. The draft circular proposed a QR code on electronic and printed invoices and a unique EIS identifier for each document. Check whether the final version keeps these, because they affect how your system is configured.
Can I use a service provider, and are providers accredited?
RMC 98-2026 says you can comply in two ways: with your own solution, whether built in-house or bought, or through an Electronic Invoicing Service Provider (ESP). It describes ESPs as organisations licensed to do business in the Philippines, with a local authorised representative and accountable technical, compliance, data protection and security officers.
The BIR will publish the rules for ESPs separately. Until then, be sceptical of any vendor claiming to be an “official” or “BIR-approved” provider. Ask for the document, the issuing authority and the date. Also ask where the provider is registered and who your local contact is.
A good provider can still help with the unglamorous parts: connecting your ERP, cleaning invoice data, preparing for PTI and EIS tests, and monitoring errors. Just keep the claims honest on both sides.
What are the penalties?
The circular does not set a standalone penalty for missing 31 December. Commentary points to existing Tax Code provisions, including Section 264 on invoicing violations and Section 264-A on failure to transmit sales data, but how they will be applied to e-invoicing is not yet spelled out. Some vendor sites quote specific peso ranges per offence. Treat those with caution until the BIR confirms them.
The BIR Commissioner has described the approach as education before enforcement. That is the current attitude, not a guarantee.
Is there a tax incentive for setting it up?
Yes. RR 11-2025 allows an additional one-time deduction for the cost of setting up an electronic sales reporting system: 100% for micro and small taxpayers and 50% for medium and large taxpayers, claimed in the year the system is completed or fully paid. Ask your tax adviser how your project qualifies and keep invoices for every cost.
A realistic timeline from now to 31 December
| When | What to do |
|---|---|
| This week | Confirm your classification and whether you are in the first group. Name owners in finance and IT. List every system that creates invoices at head office and branches. |
| Next 1 to 2 weeks | Check with your software vendor whether the system can issue structured e-invoices and pass EIS tests. Clean master data, especially TINs and tax codes. Prepare PTI papers. |
| By mid-November | File the PTI application with your RDO or Large Taxpayer Office. Prepare manual invoice backups and a downtime procedure. |
| Late November to early December | Configure and test against real scenarios: credit notes, corrections, branch invoices, foreign currency, bulk runs. Train staff. |
| December | Start EIS Certification testing if your PTI has arrived. Go live early enough to fix problems before the 31st. |
| After 31 December | Finish EIS Certification within six months of the PTI. Watch for the BIR’s sales reporting, ESP and penalty guidance. |
The dates are tight on purpose. Anyone starting in December is gambling on the BIR’s processing speed.
What about my ERP or accounting software?
The right question is not whether your system “supports e-invoicing”. Ask these instead:
- Can it issue invoices electronically to buyers, rather than only print them?
- Can it produce the structured data the BIR requires, and is it ready for EIS Certification tests?
- Does making it compliant need an upgrade, a customization or a connector?
- Will switching systems or adding a connector trigger a new or amended PTI?
- How does it handle credit notes, corrections, downtime recovery and multiple branches?
Advintek works with Philippine businesses on exactly this layer: preparing invoice data, validating it and connecting systems such as QuickBooks, Xero, MYOB, Zoho Books, SAP, Oracle, Microsoft Dynamics and Odoo. The Invoice Factory app also helps businesses without a full ERP create and manage invoices. For PTI and EIS Certification, the application and the compliance responsibility remain with the taxpayer, so use us as support and have your tax adviser review the filings.
What most e-invoicing guides leave out
We read the main Philippine guides before writing this one. Several are useful, but the same gaps keep showing up:
- No timeline math. Few connect the 20-working-day PTI review to the 31 December deadline. That is the practical reason to start now.
- Blurred reporting versus issuing. Some pages mix up the two obligations and quote a three-day transmission window as if it already applies.
- Thin operational detail. Downtime, corrections, branches and software changes get a line or nothing.
- Global templates. Many pages are written for a global platform, with little Philippine process detail or ERP-level guidance.
- Overconfident claims. Statements such as “100% compliant” or “BIR-approved” appear before the ESP rules exist.
We would rather give you the awkward parts than a tidy summary.
Frequently asked questions
What is the BIR e-invoicing deadline? 31 December 2026 for covered taxpayers, under RR 26-2025 and RMC 98-2026.
Is a PDF invoice an e-invoice? Only if it was generated by a registered or approved system, issued electronically and backed by structured data. A PDF made in Word or Excel is not.
Do I need to send invoices to the BIR by 31 December? No, not under the current reading. That date applies to issuing e-invoices. Sales reporting follows separate guidelines.
Do I need a PTI if I already have a CAS permit? Yes. The PTI Electronic Invoice is a separate permit.
How long does the PTI take? The BIR says it will evaluate a complete application within 20 working days.
What if my system goes down? Use BIR-authorised manual invoices, then replace them with e-invoices that reference the manual invoice numbers.
Do micro taxpayers have to comply? No, but they can adopt voluntarily with a PTI.
Do branches need to comply? Yes. If the business is covered, the head office and all branches must issue e-invoices.
Where to start
Bring one real invoice from your system, plus your taxpayer classification, and we will walk through what is missing. Book a free consultation with Advintek and use the weeks you have left on the work that takes longest.
