Invoicing guides

What is worth knowing before choosing invoicing software, without the jargon: the rules, the deadlines and how it works in practice.

• Veri*factu: what it is, who it applies to and when

  What Spain’s Veri*factu is, who it applies to and when: companies from 1 January 2027, the self-employed from 1 July 2027. Requirements, QR code and fines.

• Invoicing software for freelancers: what to look for

  What freelancers should look for in invoicing software: local tax, numbering, corrective invoices, exports and an AI agent. From €14.99 a month, 14-day trial.

• Multi-company invoicing for accountants and groups

  Keep every client company in one account, each with its own tax ID, series and ledgers. Per-company pricing from €14.99 down to €4.36 a month.

• MCP invoicing connector for AI agents

  Connect Claude, ChatGPT, Gemini or Grok to your invoicing with FacturaSmart Pro’s MCP server: 82 operations, OAuth sign-in and optional read-only access.