Quotes, invoices, Veri*Factu and Facturae in one open-source program. On your own server or in the cloud.
| Item | Qty | Price | Amount |
|---|---|---|---|
| Air-conditioning service | 1 | €180.00 | €180.00 |
| HEPA filter 600 × 600 | 4 | €42.50 | €170.00 |
| Labour (hours) | 3 | €38.00 | €114.00 |
With InvoiceFlash nothing changes for you: you invoice as usual and every invoice already comes out with its QR code, its fingerprint and its Tax Agency record. Compliance becomes something you do not have to think about.
| Item | Qty | Price | Amount |
|---|---|---|---|
| Air-conditioning service | 1 | €180.00 | €180.00 |
| HEPA filter 600 × 600 | 4 | €42.50 | €170.00 |
| Labour (hours) | 3 | €38.00 | €114.00 |
Fingerprint 1BCBD84DE22ECDEB…55C35C05
An issued invoice can no longer be edited: its data is fixed.
A mistake? “Void” creates a corrective invoice in negative. The original is never deleted.
Every invoice carries its tax QR code and a fingerprint chained to the previous one, and is sent to the Tax Agency with your digital certificate.
PDF for your client, Facturae for public administrations and email delivery, all from the same invoice.
| Item | Qty | Price | Amount |
|---|---|---|---|
| Air-conditioning service | 1 | €180.00 | €180.00 |
| HEPA filter 600 × 600 | 4 | €42.50 | €170.00 |
| Labour (hours) | 3 | €38.00 | €114.00 |
<fe:Facturae> <FileHeader> <SchemaVersion>3.2.1</SchemaVersion> <Modality>I</Modality> <InvoiceIssuerType>EM</InvoiceIssuerType> </FileHeader> <Invoices> <Invoice> <InvoiceHeader> <InvoiceNumber>0118</InvoiceNumber> <InvoiceSeriesCode>F-2026</InvoiceSeriesCode> </InvoiceHeader> <InvoiceTotals> <TotalGrossAmount>464.00</TotalGrossAmount> <TotalTaxOutputs>97.44</TotalTaxOutputs> <InvoiceTotal>561.44</InvoiceTotal> </InvoiceTotals> …
Excerpt of the Facturae 3.2.1 XML
To administracion@hotelmirador.example
Subject Invoice F-2026-0118 from Taller Rivas
Hello, please find invoice F-2026-0118 attached. Thank you for your business.
Attachments F-2026-0118.pdf
It all starts from the same invoice.
Check out the demo for more information.
Clients Quotes Orders Delivery notes Drafts Invoices Receipts Direct debits Returns Products Reports
Yes. Every issued invoice is locked, mistakes are fixed with a corrective invoice without deleting the original, and every invoice carries its tax QR code and a fingerprint chained to the previous one. The record is sent to the Spanish Tax Agency with your digital certificate.
On 1 January 2027 for companies that pay Spanish corporate tax and on 1 July 2027 for everyone else, self-employed included, under Royal Decree-law 15/2025.
The program is open source and free: download it from GitHub and install it on your own server. If you would rather not install anything, you can create your business in the cloud for free from this page.
Yes. It is a PHP web application with a MariaDB database, with no external dependencies, and it runs on any standard web host.
Yes. It generates the Facturae 3.2.1 XML used to invoice Spanish public administrations, plus the PDF for your clients and email delivery from the program itself.
Clients, quotes, orders, delivery notes, receipts, direct debits, returns, products and reports. Plus optional Manufacturing, CRM, Accounting and Purchasing modules.
English and Spanish.
