VAT Calculator (Add & Remove VAT

Value Added Tax (VAT) is a consumption tax added at each stage of production and sale. The UK standard rate is 20%, with reduced rates of 5% for certain essentials.

To use the VAT Calculator (Add & Remove VAT), enter your Price Amount, VAT Rate, Custom VAT Rate (if Custom selected) and other values. The calculator instantly computes VAT Amount, Net Price (Excluding VAT) and more. Results update in real time as you change any input — no submit button needed.

How to Use This Calculator

Enter your Price Amount (e.g. 500), VAT Rate — choose from options such as 5% — UK Reduced Rate (domestic fuel, children's car seats), 12% — EU Reduced Rate (some food, medical), 20% — UK Standard Rate, Custom VAT Rate (if Custom selected) (e.g. 15 in %), and Calculation Direction — choose from options such as Add VAT (Net Price → Gross Price), Remove VAT (Gross Price → Net Price). Results update instantly as you type — no submit button or page reload required. Adjust any value to compare scenarios side by side.

The Formula

Adding VAT: VAT Amount = Net Price × Rate % | Gross = Net + VAT

Removing VAT: Net Price = Gross ÷ (1 + Rate %) | VAT = Gross - Net

Worked Example

£500 net price + 20% UK Standard VAT:

• VAT Amount: £500 × 0.20 = £100.

00.

• Gross Price (Inc. VAT): £500 + £100 = £600.00..

Understanding Your Result

Evaluate your result against the specific financial decision driving this calculation. Small input differences can create large output swings — run two or three scenarios (conservative, base, optimistic) to understand the range of outcomes. For decisions involving more than a month's income, validate your result against a second source or consult a certified financial planner (CFP) or CPA depending on the tax implications.