Does Invoicemonk replace BIR CAS certification?

For in-scope EIS taxpayers, EIS submission is the active control. Invoicemonk transmits in the BIR-mandated JSON.

How are VAT and Percentage Tax split?

VAT (12%) for VAT-registered sellers; Percentage Tax (3% / 1% per NIRC) for non-VAT sellers. Invoicemonk picks the right path per your BIR registration.

Are withholding tax codes applied?

Yes. Expanded Withholding Tax (EWT) codes per BIR Form 1601-E are applied at the line level when the buyer is a withholding agent.

Can I issue an Official Receipt through Invoicemonk?

Yes. Service-side ORs and Sales Invoices are both supported per BIR document-type rules.

What about the 0% VAT for exports?

Exports and BOI/PEZA-registered enterprises' qualifying sales are zero-rated with the correct BIR code on the invoice.

Philippines · BIR (Bureau of Internal Revenue)

EIS — Electronic Invoicing System (CAS / e-Invoice / e-Receipt)

Invoicemonk transmits Philippine invoices to the BIR Electronic Invoicing System (EIS) in JSON, receives the BIR reference number, and binds the QR to the invoice. VAT (12%) and Percentage Tax handled per NIRC.

Start with Pro: $15/mo All 18 live e-invoicing mandates

ArtefactBIR EIS referenceTransportDirect API submission to the BIR Electronic Invoicing SystemLive since2023Applies toPhased: top 100 large taxpayers since 1 July 2022; expansion to all VAT-registered taxpayers ongoing per BIR Revenue Regulations

What you get

Built for Philippines from day one

What BIR EIS requires

BIR Revenue Regulations require in-scope taxpayers (top 100 large taxpayers from 1 July 2022, with phased expansion) to transmit every invoice and receipt to the BIR EIS in the prescribed JSON, receive a BIR reference number, and present the QR on the buyer-facing invoice. The system replaces the legacy Computerised Accounting System (CAS) certification for in-scope sellers.

How Invoicemonk meets BIR EIS

Invoicemonk builds the BIR EIS JSON, signs with the registered taxpayer credential, transmits to the EIS, captures the BIR reference number, and binds the QR to the invoice. VAT (12%) is split correctly; Percentage Tax (3% / 1%) is applied to non-VAT taxpayers; withholding tax codes are applied at the line level.

Who this applies to

Philippine taxpayers in the active BIR EIS rollout wave; voluntary onboarding is supported for taxpayers preparing for their wave date.

Cryptographic artefacts, in every jurisdiction we cover

Invoicemonk issues cryptographically signed structured invoices in every one of the 18 jurisdictions we cover, using the local artefact the tax authority requires:

CSID — ZATCA (Saudi Arabia)
IRN — GST India (NIC IRP), FIRS Nigeria, GRA Ghana
UUID — MyInvois Malaysia
QR + Control Unit Number — KRA eTIMS (Kenya)
Chave de Acesso — NF-e / NFS-e (Brazil)
Fiscal signature — ZIMRA FDMS (Zimbabwe)
XAdES digital signatures — Peppol (EU), MTD (UK)
ICP-Brasil A1 — Brazilian NF-e / NFS-e signing

Each mandate page documents the local artefact, signing algorithm, certificate authority, and the spec section that requires it.

FAQ

Philippines e-invoicing, answered

Philippines: compliant from day one

JSON e-invoices transmitted to the BIR EIS with reference number and QR.

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Verified against authority specifications — sources reviewed 2026-06-23View

BIR Electronic Invoicing System portal
BIR Revenue Regulations on e-Invoicing
Revenue Regulation 8-2022 (EIS)
National Internal Revenue Code (NIRC) of 1997, as amended
TRAIN Act (RA 10963) — Section 237-A (Mandates e-invoicing for in-scope taxpayers)
Ease of Paying Taxes Act (RA 11976)