What’s the BTW (VAT) setup for a Dutch Magento store?

Three rates: 21% standard (most goods), 9% reduced (food, books, medicines, public transport, hairdressers, etc.), and 0% (intra-EU B2B with valid BTW-nummer + intra-community supply). In Magento we configure: (1) tax classes per product (21% default, 9% for food/books, 0% for B2B EU), (2) tax rates per customer-tax-class (B2C BTW-included, B2B BTW-excluded with reverse-charge note), (3) BTW-nummer validation at customer registration via VIES (the EU’s central VAT validation service), (4) invoice templates that show BTW separately with the correct percentage and your BTW-id + KvK-id, and (5) the "BTW verlegd" reverse-charge text on cross-border invoices.