What is the Vatify API?

Vatify provides a comprehensive e-Invoicing and VAT Compliance API that enables businesses and software vendors to automate tax compliance across Europe and beyond.

Value Proposition

Integrate once. Comply everywhere.

Vatify handles the complexity of multi-country VAT regulations, tax authority submissions, and e-invoicing formats — so your team focuses on your product, not on tax rules.

Without Vatify	With Vatify
Country-by-country custom integrations	Single unified API for all countries
Manual updates when regulations change	Vatify absorbs regulatory changes
Risk of submission errors and penalties	Validated, compliant submissions
Months of implementation per country	3–5 weeks to full integration

Base URLs

Environment	URL
Sandbox	`https://gw.mvsandbox.com/api/invoicing`
Production	`https://gw.marosavat.com/api/invoicing`

Core Capabilities

Capability	What it does
Document Processing	Submit invoices in JSON or UBL 2.1 format directly to tax authorities
Multi-format Support	JSON, UBL 2.1, XML (FatturaPA, XRechnung, KSeF), PDF, Factur-X, QR codes
Validation	Pre-submission UBL compliance checking to prevent rejections
Tax Authority Submission	Direct real-time submission to SII (Spain), SDI (Italy), KSeF (Poland), ANAF (Romania), and more
Batch Operations	Process up to 1,000 documents per request; async for larger volumes
Export & Reconciliation	Export invoice data in Excel/CSV/PDF; reconcile against tax authority records
PDF Conversion	Convert UBL XML invoices to professional PDFs with country-specific QR codes
Template Downloads	Country-specific Excel/CSV templates with built-in validation for manual entr

Key Concepts

Purpose

Every API call requires a purpose parameter that tells Vatify what type of compliance operation you're performing:

Purpose	Description
`EINVOICING`	E-invoice submission to tax authority (Spain SII, Italy SDI, etc.)
`EREPORTING`	Periodic reporting obligations
`RTR`	Real-time reporting (e.g. Spain Veri*Factu)

Flow

The flow parameter indicates the direction of the invoice:

Flow	Description
`ISSUED`	Invoices your company sends to customers
`RECEIVED`	Invoices your company receives from suppliers

Document Lifecycle

CREATED → PROCESSING → OK
                    ↘ ERROR

Status	Meaning
`CREATED`	Document received by Vatify
`PROCESSING`	Being validated and submitted to tax authority
`OK`	Accepted by tax authority
`ERROR`	Rejected — check error details for resolution

Who Uses Vatify API?

ERP vendors embedding VAT compliance as a native feature in their product
Accounting software companies adding e-invoicing to their platform
E-commerce & marketplace platforms automating cross-border invoice compliance
Accounting firms managing compliance for multiple clients via a single integration
Enterprises with multi-country operations needing a single API for all EU jurisdictions