German B2B businesses must be able to receive structured e-invoices from 2025. Issuing becomes mandatory from 2027 or 2028 depending on prior-year revenue. E-Rechnung Audit 2026 checks your current workflow across receipt, issuing, archival, and GoBD-oriented process readiness. Free: - readiness score - personal deadline countdown - gap list with UStG references - fine and basic risk estimate - top software recommendation Premium: - action plan - sector tips - archival checklist - PDF report - tax-adviser mail draft - VAT-risk scenarios - full provider comparison - no banners This app is an informational compliance aid and does not replace legal or tax advice.