E-invoicing for Germany. No ERP required. Legally compliant.
CoolHanX creates, sends, receives and archives XRechnung & ZUGFeRD invoices — validated against EN 16931. Browser-based for companies without an ERP, via API for ERP users.
Everything for e-invoicing — nothing extra
Create, receive, validate, archive, hand over: six features, one process.
Create e-invoices
XRechnung 3.0 & ZUGFeRD in minutes — validated before every issuance.
Learn more →Receive & validate
Upload or mailbox: automatic validation, quarantine on errors.
Learn more →GoBD archive
8 years, tamper-evident archiving — checksummed, automatic.
Learn more →DATEV & tax advisor
Buchungsstapel (EXTF) and CSV — handed over in one click.
Learn more →VAT automation
19% / 7% / §13b / EU / export — automatic with the required notice.
Learn more →Public sector & B2G
Leitweg-ID validated, XRechnung for the public-sector portal (ZRE/OZG-RE).
Learn more →AI pre-accounting
Suggests tax category & SKR account — learns from your corrections.
Learn more →Duplicate & anomaly detection
Duplicate and suspicious inbound invoices are flagged before you pay.
Learn more →Access control
2FA, IP, country and device restrictions for the work zone.
Learn more →The right solution for your business
Whether you're just starting out or already run an ERP — the e-invoicing part is solved.
The complete e-invoicing workspace in your browser: create, receive, archive, hand over — for Kleinunternehmer without their own software.
Explore the workspace →Your system stays the source of truth: it supplies invoice data via API, CoolHanX returns validated, archived e-invoices.
See the API integration →Clients on CoolHanX deliver structured, validated documents — as a DATEV Buchungsstapel instead of paper copies.
Read the firm page →Knowledge & free tools
Mandate guide 2025–2028
Who must comply, and when? Every deadline of the Growth Opportunities Act.
Read the guide →Free validators
Check VAT ID, IBAN and Leitweg-ID instantly — no account needed. The full e-invoice validator is waiting in your free account.
Check now →Questions? Chat, bottom right
Instant answers on the mandate, formats, GoBD and pricing — right here on the page.
Open chat →Ready? Up and running in two minutes — no credit card.
Create your free company account