Existing Spanish invoicing tools are desktop apps with a bolted-on mobile view. Asesorio is genuinely mobile-first — quote, invoice and get paid from your phone on the job, nothing to install. And instead of making you a tax expert, its engine determines the correct tax automatically for every case (IVA, IGIC, IPSI, recargo de equivalencia, IRPF, reverse charge), so any autónomo or SMB issues a correct, VeriFactu-compliant invoice — no spreadsheets, no gestor, no fiscal know-how required.

I'm Davide, maker of Asesorio. Spain just made the scariest word for freelancers official: VeriFactu — a law requiring every invoice to be tamper-proof and reported to the tax agency (AEAT) in real time. Most tools make you fight with certificates, desktop installs and gestorías to comply. Asesorio makes that disappear: • Create a quote or invoice from your phone in seconds • Send a payment link and get paid • Every invoice is automatically chained, tamper-evident and filed with the AEAT in real time — fully VeriFactu-compliant, nothing to install. Under the hood, a tax engine handles the messy Spanish cases for you — IVA, IGIC (Canaries), IPSI (Ceuta/Melilla), recargo de equivalencia, IRPF withholding, reverse charge — plus VIES checks for EU cross-border invoices. It works in Spanish, Catalan and English, with a free plan to start. VeriFactu is just wave one — mandatory e-invoicing is rolling out across the EU (ViDA). Our mission: the simplest, compliance-native way for Europe's millions of self-employed to invoice. Would love your feedback — especially from anyone who's lived through an e-invoicing mandate. What would make this a no-brainer for you? 🙏 —Davide

How does the tax engine handle cross-border sales within the EU, especially when the buyer validates their VAT number at checkout?

@glhan1kol We built a deterministic tax engine that scope transaction based on type (what good/service and type) and buyer/seller location. Right now it is fully ready for Spain --> rest of the world but in the next coming months we will open country by country. VAT is validated vs local tax authority + VIES automatically. On asesorio.com (website) there are free tools to test the tax engine.

How does the tax engine handle cross-border sales within the EU, especially when the buyer validates their VAT number at checkout?

Asesorio - Invoicing & Tax Determination

Send tax-compliant invoices from your phone. Free.

Send tax-compliant invoices from your phone. Free.