Invoice and comply with VERI*FACTU effortlessly
Issue, sign and send invoices compliant with Spanish regulations — with no extra software and no surprises from the Spanish Tax Agency (AEAT).
- VERI*FACTU-compliant
- Facturae 3.2.1
- UBL 2.1
- PAdES/XAdES/Factur-X signature

Invoice and comply with VERI*FACTU, end to end
The usual problems
Fear of penalties
VERI*FACTU regulations are strict, and an error on an invoice can end in a penalty from the Spanish Tax Agency (AEAT).
Invoices across several tools
Excel, the PDF and your accountant's software never match up.
Correcting is a hassle
Fixing an invoice without breaking the numbering or the legal audit trail.
You don't know what you've collected
No visibility into what has been issued, sent, outstanding or paid.
The formats you're required to use
Facturae for the Administration, UBL for Europe, PDF for the customer.
Slow quarterly closes
Gathering and exporting every invoice for your accountant each quarter.
How Zynvio solves it
Full invoices (F1)
Create, number, edit, send and rectify (R1–R4).
Simplified invoices (F2)
Simplified receipts, R5 corrective invoices and refunds.
VERI*FACTU
Chained records with hash, QR code and submission to the AEAT (validated end-to-end).
Facturae 3.2.1
XML generation and XAdES signature for the Administration.
UBL 2.1 (EN 16931)
European e-invoice, downloadable from the portal.
Electronic signature
PAdES (PDF), XAdES (Facturae) and Factur-X/ZUGFeRD with your certificate or FNMT. The download and the shared link always serve the signed version.
Quotes → invoices
Convert quotes into one or several invoices.
Recurring invoices
Fees and subscriptions that issue themselves.
Received invoices
Upload, categorize and record supplier invoices.
Templates and numbering
Configurable series, numbering and branding.
Customer portal
Password-protected link to download PDF/Facturae/UBL.
Multi-currency
Exchange rate frozen at issuance, in 3 PDF formats.
Connect your tools via API
Zynvio exposes API access with token authentication to integrate your invoicing with external systems: stores, ERPs, payment gateways or your own software.
- API with token authentication (Bearer) to query and create invoices.
- Export each invoice as PDF, XML, UBL 2.1, Facturae, JSON or CSV.
- VERI*FACTU endpoints: records, resubmissions and submission status to the AEAT.
- Shareable token links so customers can download their invoice.
- Integrate your store and gateways (Shopify, WooCommerce and Amazon available; more in the marketplace).
Automate your workflows
Automate repetitive invoicing so you never issue by hand each month again.
- Recurring invoices that issue themselves (daily, weekly, monthly or yearly).
- Quotes that turn into an invoice with one click.
- Automatic VERI*FACTU registration and submission on issuance.
- Automatic retries if the AEAT doesn't respond the first time.
Who it's for
Freelancers
Compliant invoicing from day one, with no extra software and no surprises.
What you gain
Stay VERI*FACTU-compliant without switching tools.
Fewer errors: numbering, taxes and corrective invoices under control.
Clear collections: you know what has been issued, sent and paid.
Everything exportable for your accountant in one click.
Signature and official formats (Facturae, UBL) included.
Ready for mandatory e-invoicing.
Frequently asked questions
Is Zynvio VERI*FACTU-compliant?
Yes. Zynvio generates chained invoicing records with a fingerprint (hash), includes the QR code and submits invoices to the AEAT in VERI*FACTU mode, with XAdES signature and certificate. Validated end to end.
Can I issue corrective invoices?
Yes. Zynvio supports R1 to R5 corrective invoices per the AEAT specification, maintaining traceability to the original invoice.
What invoice formats does it generate?
Facturae 3.2.1 for the Administration, UBL 2.1 (EN 16931) for Europe and PDF with your branding. You can also export as XML, JSON and CSV.
Do I need a digital certificate?
Signing and submitting to the AEAT uses your electronic certificate (or one from the FNMT). Zynvio handles the PAdES/XAdES signature for you.
Can I connect my store or my software?
Yes, through the token API and the integrations (Shopify, WooCommerce and Amazon available; more in the marketplace). You can query and create invoices and export them to other systems.
Turn your operation into a connected system
Request a demo and see Zynvio in action.