VAT and sales tax setup in Business Central
How Business Central calculates and reports VAT — VAT posting groups, EU rules, OSS, reverse charge, and country reporting.
VAT and sales tax are the area of Business Central where country localizations matter most. The core engine is the same everywhere, but every country layers its own rules and reports on top.
The posting-group model. Business Central calculates VAT by intersecting two posting groups on every transaction line: the VAT business posting group (who you are trading with — domestic customer, EU customer, export, reverse-charge subcontractor) and the VAT product posting group (what's being sold — standard goods, food, services, exempt). The intersection in the VAT posting setup table defines the rate, the GL accounts to post to, the calculation type (normal, reverse charge, sales tax, full VAT), and the EC reporting category.
Setup discipline. Every customer, vendor, and G/L account default a posting group, so most postings get the right VAT without manual intervention. Mistakes typically come from new countries, new product categories, or split-purpose accounts; spend the time getting defaults right.
EU rules. Built-in support for EU intra-community supplies, reverse-charge purchases, triangulation, and the EC Sales List. The VAT Statement report builds country-specific VAT returns line by line by combining VAT entries.
One-Stop Shop (OSS). For EU B2C cross-border sales, Business Central supports the OSS scheme, with VAT calculated at the customer's country rate and a separate OSS return posted to the supplier's home tax authority.
Reverse charge. Both EU reverse charge and country-specific domestic reverse-charge schemes (construction services, scrap metal, mobile phones, gold) are supported through the posting setup type.
Sales tax (US/Canada). A separate sales-tax engine, configurable by tax area, tax jurisdiction, and tax group, handles state, county, and city tax composition. For high-volume US businesses, ISV partners deliver Avalara or Vertex integrations from AppSource.
Country reporting. VAT returns (Making Tax Digital in the UK, SAF-T, real-time invoice reporting in Spain/Italy/Hungary, e-invoicing) ship per country, either from Microsoft or from a localization ISV. Always verify country coverage before committing to BC for a particular jurisdiction.
Audit and corrections. Posted VAT entries are immutable; corrections post a counter-entry. The VAT register is the canonical audit trail.
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