Ireland & UK VAT Calculator (Net ↔ Gross)

VAT Calculator

VAT Calculator FAQ

How are net, VAT, and gross calculated?

If the basis is net, VAT is computed as \( \text{VAT} = A \times r \) and gross as \( \text{Gross} = A \times (1 + r) \), where \( A \) is the amount and \( r \) is the VAT rate decimal.

If the basis is gross, net is \( \text{Net} = \frac{A}{1 + r} \) and VAT is \( \text{VAT} = A - \text{Net} \), which provides an exact inverse for clean breakdowns.

Which rates does this tool cover?

Ireland: 23% standard, 13.5% reduced, 9% reduced (with noted temporary use), 4.8% livestock, and 0% where applicable.

United Kingdom: 20% standard, 5% reduced, and 0% for zero-rated essentials and eligible categories.

Is this calculator suitable for invoices?

This tool provides indicative calculations and rounding to two decimals for display; always confirm category eligibility and current rates before issuing tax invoices.