Do I need a CSID before I can send my first ZATCA invoice?

Yes. Invoicemonk walks you through CSID onboarding inside the app: we generate the CSR, you complete the OTP step on the ZATCA Fatoorah portal, and the certificate is stored encrypted for signing. The whole flow takes under five minutes.

Does Invoicemonk handle both B2B clearance and B2C reporting?

Yes. Standard Tax Invoices (B2B) are cleared with ZATCA before delivery to the buyer; Simplified Tax Invoices (B2C) are reported within the 24-hour window. The buyer always receives the cleared/reported version with the ZATCA QR.

What XML standard does Invoicemonk emit?

UBL 2.1 with ZATCA KSA extensions, signed with XAdES as required by the ZATCA Electronic Invoice XML Implementation Standard.

Can I export the signed XML for my accountant?

Yes. Every cleared invoice exposes the signed XML, the ZATCA QR, the cryptographic stamp, and the PDF/A-3 download from the invoice detail screen.

What happens if ZATCA rejects an invoice?

The rejection reason from ZATCA is surfaced on the invoice with the corrective action. The invoice cannot be sent to the buyer until clearance succeeds — that is the Phase 2 design and Invoicemonk enforces it.

Saudi Arabia · ZATCA (Zakat, Tax and Customs Authority)

Fatoorah Phase 2 — Integration Phase

Invoicemonk issues ZATCA Phase 2 compliant e-invoices in Saudi Arabia: UBL 2.1 XML signed with your CSID, embedded TLV QR and UUID, cleared through the Fatoorah portal for B2B and reported for B2C. Live since April 2024.

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

ArtefactCSIDTransportDirect API integration with the ZATCA Fatoorah portalLive since2024Applies toAll VAT-registered businesses in Saudi Arabia

What you get

Built for Saudi Arabia from day one

What ZATCA Phase 2 requires

ZATCA Phase 2 (the Integration Phase) requires every VAT-registered business in Saudi Arabia to issue invoices as UBL 2.1 XML, sign them with a Cryptographic Stamp Identifier (CSID) issued by ZATCA, embed a TLV-encoded QR code, and either clear the invoice with ZATCA in real time (B2B Standard Tax Invoices) or report it within 24 hours (B2C Simplified Tax Invoices). The mandate rolled out in waves from January 2023 and now covers every VAT-registered seller.

How Invoicemonk meets ZATCA Phase 2

On invoice creation, Invoicemonk renders the UBL 2.1 XML, computes the invoice hash chain, signs the document with your CSID using XAdES, embeds the TLV QR (seller name, VAT number, timestamp, totals, hash) and the UUID, then submits it to the ZATCA Fatoorah portal — clearance for B2B Standard Tax Invoices, reporting for B2C Simplified Tax Invoices. The cleared invoice and ZATCA QR are bound to the PDF/A-3 download for the buyer. CSID onboarding (CSR generation, OTP, certificate retrieval) is handled inside the app.

Who this applies to

All VAT-registered persons in Saudi Arabia, regardless of turnover. B2B transactions follow the clearance model; B2C transactions follow the reporting model. Foreign sellers without a Saudi VAT registration are out of scope.

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

Saudi Arabia e-invoicing, answered

Related guides

Implementation playbooks for Saudi Arabia

Step-by-step guides, explainers, and error catalogues for the CSID workflow.

Editorial illustration of Saudi Arabia's e-invoicing compliance workflow for the how to comply with zatca phase 2 guide

How to Comply with ZATCA Phase 2: Onboarding and Your First Cleared Invoice (2026)

Saudi VAT-registered playbook: request a CSID, generate UBL 2.1 KSA-extension XML, apply XAdES signing, attach the TLV QR, and clear your first invoice through ZATCA Fatoora.

Read guide

Editorial illustration of Saudi Arabia's e-invoicing compliance workflow for the zatca phase 2 explained guide

ZATCA Phase 2 Explained: Scope, Thresholds, Waves, Penalties, Timeline (2026)

Plain-English explainer for the ZATCA Phase 2 Integration Phase: who it applies to, the wave schedule from Wave 1 (SAR 3 bn) to Wave 21 and beyond, what changes vs Phase 1, and the penalty schedule.

Read guide

Editorial illustration of Saudi Arabia's e-invoicing compliance workflow for the zatca phase 2 common errors guide

ZATCA Phase 2 Common Errors and How to Fix Them (2026)

Catalogue of the most common ZATCA Fatoora rejection reasons in 2026 — PIH mismatch, XAdES signature failure, TLV QR length, ICV gaps, schema validation — with the exact fix and source for each.

Read guide

Saudi Arabia: compliant from day one

CSID-signed XML cleared through the ZATCA Fatoorah portal in real time.

Start with Pro: $15/mo Talk to sales

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

ZATCA E-Invoicing Detailed Guideline
ZATCA Electronic Invoice XML Implementation Standard (UBL 2.1 + KSA extensions)
ZATCA E-Invoicing Resolution & Regulations
ZATCA Fatoorah developer portal (APIs, CSID, compliance checks)
ZATCA Phase 2 onboarding waves
KSA VAT Implementing Regulations (Article 53 — Tax Invoices)