ZATCA has published e-invoicing requirements that will be rolled-out into two main phases in KSA:
Phase 1, known as the Generation phase, will require taxpayers to generate and store tax invoices and notes through electronic solutions compliant with Phase 1 requirements.
Phase 1 is enforceable as of December 4th, 2021, for all taxpayers (excluding non-resident taxpayers), and any other parties issuing tax invoices on behalf of suppliers subject to VAT.
Phase 2, known as the Integration phase and rolled out in waves by targeted taxpayer group, will involve the introduction of Phase 2 technical and business requirements for electronic invoices and electronic solutions, and the integration of these electronic solutions with ZATCA’s systems.
ZATCA will notify taxpayers of their Phase 2 wave at least six months in advance, and the enforcement date for the first target group will not be earlier than January 1st, 2023.
Source : ZATCA