Add or remove VAT at 20%, 5% or 0% instantly. Calculate VAT amounts for invoices, quotes and purchases — both inclusive and exclusive.
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How This Works
To add VAT: multiply net amount by (1 + VAT rate). Standard rate: net × 1.20. Reduced rate: net × 1.05. To remove VAT from a gross figure: divide by (1 + VAT rate). This gives the VAT fraction — do NOT simply multiply gross by 20% to find standard rate VAT. The correct fraction for 20% VAT is 1/6 of the gross.
You must register for VAT when your taxable turnover exceeds £90,000 in any rolling 12-month period (2024/25 threshold). You can also register voluntarily below this threshold, which allows you to reclaim VAT on business purchases. Voluntary registration makes sense if most of your customers are VAT-registered businesses (they can reclaim the VAT you charge) or if you have significant VAT-able costs to reclaim.