Free billing software should be exactly that: a real free tier or zero-cost plan with no surprises, and the essentials to issue legal invoices and stay compliant. These platforms must meet Spain-specific needs such as applying IVA rates of 21%, 10%, or 4%, handling IRPF withholding on services to Spanish businesses, following invoice series and numbering rules, and being ready for QR codes and Verifactu compliance. They should also support Facturae or FACe when billing the government. In this guide, you will get a quick answer with vetted free tools, learn how to stay legal under Verifactu and Crea y Crece, and see how to view or send public sector electronic invoices at no cost.
Quick answer: best free billing software in Spain
renn (free plan) - Allows up to 25 invoices per month. Includes Spanish invoice fields for NIF or CIF, IVA and IRPF, exports, mobile app, and Verifactu roadmap or live features. Ideal for freelancers or autónomos who send fewer than 25 invoices a month.
Zoho Invoice (free forever) - Offers unlimited clients and high invoice caps, solid mobile app, and multi-currency support. No Spain-specific Verifactu workflow. IRPF can be handled via a tax-group/negative-tax configuration (workaround, not a native Spain field). Suitable if you need volume and can operate without native Verifactu.
Invoice Ninja (hosted free or open source) - Free hosted: up to 5 clients, unlimited invoices, PDFs include "Created by Invoice Ninja." Self-hosted removes those limits. Spain-specific taxes are configurable; good if you want an open-source stack.
Invoicely (free) - Free plan allows 5 invoices each month. Basic features, suitable for very low volume.
B2Brouter (basic free) - Creates and sends Facturae, delivers to FACe or FACeB2B. Useful for invoicing the public sector. Paid tiers add volume and integrations.
Facturae and MiFacturae (public tools, free) - Legacy desktop Facturae app for creation, MiFacturae web for validating, searching, and viewing Facturae e-invoices online.
Sumup Invoices (limited free or low cost) - Basic free tier with about 4 invoices/month in Spain. Payment fees apply. Check Spanish template and plan limits before use.
Recommendations by volume: 1-5 invoices/month - Invoicely; 6-25 - renn; unlimited with light compliance - Zoho Invoice; open-source/self-hosted - Invoice Ninja.
Electronic invoice for treasury vs B2B e-invoice
Verifactu - AEAT system for real-time or near real-time invoice record reporting, with integrity, signature, and QR or legend requirements. Complies with RD 1007/2023 and OM HAC/1177/2024 technical specs. Rollout dates adjusted by RD 254/2025.
Crea y Crece (B2B e-invoice) - Structured e-invoicing between companies or self-employed. Rollout staged after the implementing order, starting with companies over €8 million turnover. Separate from Verifactu.
Public sector - Billing public administrations requires Facturae format and delivery via FACe or a regional point. Separate from Crea y Crece and Verifactu.
Choose a tool that issues Spain-legal invoices, supports Verifactu now or soon, and can handle Facturae if you work with the public sector.
Free self-employed invoicing essentials
A Spanish invoice must include seller and buyer name and NIF, date, unique series and number, description, tax base, IVA rate and amount (21%, 10%, or 4%), and the total. Add IRPF withholding for professional services when required. Only show Recargo de Equivalencia if using the retail regime.
Look for features like Spain templates with IVA types and IRPF, custom series, credit notes (rectificativas), CSV/Excel export for Modelo 303 and 130, client/product catalogs, quotes-to-invoices, recurring invoices, mobile app, and PDF in Spanish. Ensure Verifactu readiness with hash, signature, events, QR code, and legend.
Free electronic invoicing for public sector
When invoicing a ministry, council, hospital, or similar, you must send Facturae XML, often signed with a qualified certificate, via FACe or a regional point.
Zero-cost options include B2Brouter Basic to create Facturae, send to FACe/FACeB2B, and track status, plus the free legacy Facturae 3.4 desktop app and MiFacturae web to validate/view/search.
Upgrade to paid tiers for high volume, Peppol, integrations, long-term storage, multi-format (UBL, Peppol BIS), or automation.
How to issue an online invoice in Spain
- Create a client profile with NIF/VAT number; verify intra-EU VAT if needed.
- Set invoice series and currency (EUR default).
- Add lines with tax base, apply correct IVA or exemptions (Art. 20 LIVA), and IRPF where applicable. Show totals.
- Include QR code and Verifactu legend if in Verifactu mode.
- Send via email with payment link (card/SEPA) or via platform; for public sector, send Facturae via FACe and keep the delivery receipt.
- Store/export records for at least 4 years; keep audit trail of rectificativas and cancellations.
And if your needs expand beyond simple invoicing, switch to an online accounting platform to keep everything in one place.
Free-tier billing platform checklist
- Quotes to invoices to payment tracking
- Partial payments
- Credit notes
- Recurring invoices
- Client statements
- IVA/IRPF presets, rectificativas, intra-EU reverse charge, Recargo de Equivalencia, Spanish formats
- Verifactu: signature/hash, events, QR code/legend, XML export
- Public sector: Facturae generation, FACe/FACeB2B connector, qualified certificate signature
- CSV/Excel export, attachments, API/webhooks
- Mobile apps, offline draft, template editor, EN/ES UI
Verifactu deadlines and buying checks
From 1 January 2026, corporate income tax payers must use compliant billing systems. From 1 July 2026, remaining taxpayers such as freelancers, autónomos, and SMEs must comply.
AEAT's reception service for Verifactu records is available in Sede. Use only software with a valid responsible declaration. Check if the vendor publishes the Verifactu declaration, implements QR/legend, exports invoice events (Alta, Anulación), and, for SII users, confirms exemptions/scope.
Public e-invoicing: Viewing an e-invoice
You can create/send Facturae via B2Brouter Basic or similar free portals, and validate/view Facturae using MiFacturae online.
Steps: Generate Facturae 3.2.x with required fields, sign if needed, upload to FACe, keep delivery receipt, track acceptance/rejection, and use MiFacturae to validate/view .xsig/.xml invoices and print human-readable copies.
Bottom line
Pick the free billing software that matches your invoice volume and compliance needs. Use Facturae via FACe for public sector billing. Prepare for Verifactu now to avoid last-minute issues. Free tiers are great for starting out, but confirm limits, export features, and compliance support before committing.
