EU corporate tax, VAT/OSS/IOSS, payroll, filing deadlines, e-invoicing, and cross-border rules (ATAD, Pillar Two, DAC) across all 27 member states. Use when scoping where to register, cross-border VAT, payroll cost by country, or compliance checklists. Orientation only, not filing advice. See `eu-legal-compliance`, `accounting-finance`.
