SYNELO / Guides
Rules, deadlines and what to do next.
Market-by-market guides to the regulations that change how European companies invoice, build websites and use AI. Each guide cites the official sources and ends with a checklist.
E-invoicing · Germany
E-invoicing in Germany 2025–2028 for small businesses
E-invoicing in Germany for small businesses: receive since 2025, issue from 2027 or 2028. Who is covered, key terms explained, and a clear action plan.
Updated: 11 min readE-invoicing · Germany · Formats
XRechnung vs ZUGFeRD: which German e-invoice format?
XRechnung vs ZUGFeRD compared: file structure, readability, valid profiles and how to pick the right German e-invoice format for your business systems.
Updated: 10 min readE-invoicing · Poland
KSeF Poland e-invoicing 2026: a guide for foreign firms
KSeF Poland e-invoicing 2026 explained for foreign-owned firms and expats: receiving and issuing dates, the PLN 10,000 relief and penalties from 2027.
Updated: 12 min readE-invoicing · Belgium
Peppol e-invoicing in Belgium: guide for foreign firms
Peppol e-invoicing is mandatory in Belgium since 2026. What international companies with a Belgian VAT number must check, the fines and next steps.
Updated: 11 min readE-invoicing · France
France e-invoicing mandate: guide for foreign companies
France’s e-invoicing mandate started on 1 September 2026. What foreign companies with French customers or a French entity must do, with dates and fines.
Updated: 11 min readAccessibility · EU
European Accessibility Act requirements for websites
Does the EAA apply to your website? Scope, the microenterprise exemption, WCAG 2.1 AA and a 10-minute self-check for small online businesses.
Updated: 11 min readAI Act · EU timeline
EU AI Act compliance deadlines: 2026–2027 timeline
EU AI Act compliance deadlines after the 2026 omnibus: what a small business using chatbots or AI must do now, and what moved to 2027.
Updated: 13 min readNIS2 · Cybersecurity
NIS2 Compliance Checklist: Who Is in Scope, What to Do
NIS2 compliance checklist for SMEs: check if you are in scope, cover the 10 risk-management areas and meet the 24h/72h/1-month incident reporting stages.
Updated: 12 min read