The European layer of
tax interoperability
Stop rebuilding compliance logic for every EU country.
One API. All VAT rules. Zero regulatory drift.
# Validate a EURO invoice in one API call
curl -X POST https://api.people4.eu/v1/invoice/validate \
-H "Authorization: Bearer <YOUR_API_KEY>" \
-H "Content-Type: application/json" \
-d '{
"format": "UBL-2.1",
"country": "DE",
"invoice": "<base64-encoded-xml>"
}'
# Response
{
"valid": true,
"standard": "EN 16931",
"country_rules": "DE-XRECHNUNG-3.0",
"warnings": []
}One integration. European-wide compliance.
Your team ships features. We handle the complexity of pan-European e-invoicing regulations so you don't have to.
Compliance-as-a-Service
We track every regulatory update across all 27 EU member states. Your API calls stay valid even when the rules change – no redeploys needed.
- Automatic rule updates, zero downtime
- Legal team-reviewed interpretations
- Audit-ready logs for every validation
Developer-first API
RESTful API with OpenAPI 3.1 spec, SDKs for Node, Python, Java, Go, and .NET. Integrate in hours, not sprints.
- Sandbox environment included
- Webhooks for async processing
- Idempotent requests & retry logic
Reduce cost & risk
Replace a full-time compliance team with a predictable API subscription. Reduce penalties exposure with always-current validation rules.
- Up to 70% lower compliance overhead
- Eliminate country-specific edge cases
- Transparent usage-based pricing
Everything you need for EURO invoice compliance
The People4 API covers the full invoice lifecycle — from generation and validation to transmission and archiving.
Up and running in three steps
From sign-up to your first validated invoice in under 30 minutes.
Get your API key
Sign up, choose your plan, and receive your sandbox API key instantly. No credit card required to explore.
Integrate in minutes
Use our OpenAPI spec, Postman collection, or one of five official SDKs. Our docs cover every endpoint with copy-paste examples.
Go live with confidence
Promote to production when you're ready. Compliance stays current automatically — we handle every regulatory update for you.
Built for software teams building for Europe
ERP & Accounting Software
Embed compliant e-invoicing directly into your product. Sell to enterprise customers in any EU market without country-specific dev work.
Fintech & Payments
Attach compliant invoice records to every payment flow. Meet B2B e-invoicing mandates as they roll out across the EU from 2025–2028.
E-Commerce Platforms
Automatically generate and archive compliant VAT invoices for cross-border EU transactions. Support OSS and IOSS out of the box.
Procurement & SCM
Receive, validate, and route supplier invoices through Peppol. Reduce AP processing time by automating compliance checks.
SaaS Billing Platforms
Add EU invoice compliance as a native feature. Let your customers self-serve their own country rules through your existing billing UI.
Global ISVs entering Europe
Expand into EU markets without building a local compliance team. People4 is your European tax compliance layer from day one.
Simple, usage-based pricing
No setup fees. No hidden costs. Pay for what you validate.
Test and develop without limits in the sandbox environment.
- 10,000 validations / month
- All EU country rule sets
- Full API access (sandbox)
- Community support
- OpenAPI spec & SDKs
For SaaS companies processing invoices at scale.
- 100,000 validations / month
- All 27 EU country rule sets
- Production API access
- Webhooks & async jobs
- Priority email support
- Regulatory alerts
- 99.9% uptime SLA
For large ISVs and enterprise platforms with high volume needs.
- Unlimited validations
- Dedicated infrastructure
- Custom SLA (up to 99.99%)
- Peppol access point included
- Dedicated account manager
- On-premise deployment option
- SOC 2 & ISO 27001 reports
Built on open standards. Trusted by auditors.
Ready to ship European invoice compliance?
Join hundreds of software teams who've replaced hand-rolled tax logic with the People4 API.
Let's talk compliance
Whether you're evaluating the API or need a custom enterprise deal — our team is here to help.