VAT Calculation Calculator
Use this free VAT calculator to add VAT to a net amount or extract VAT from a gross amount. It works for any VAT rate (e.g., 5%, 10%, 20%).
Formula (add VAT): Gross = Net × (1 + VAT rate ÷ 100)
How VAT calculation works
VAT (Value-Added Tax) is a consumption tax added to goods and services. In day-to-day pricing, you will usually see one of two scenarios: a price before tax (net) or a price after tax (gross). The core task is converting between the two.
- Net amount: price before VAT.
- VAT amount: tax value charged on the net amount.
- Gross amount: total paid, including VAT.
Core formulas
When you know the net amount and VAT rate:
- VAT = Net × (Rate ÷ 100)
- Gross = Net + VAT
When you know the gross amount and VAT rate:
- Net = Gross ÷ (1 + Rate ÷ 100)
- VAT = Gross − Net
Example VAT calculations
Example 1: Add VAT to a net price
If a service costs 100.00 (net) and VAT is 20%, then VAT is 20.00, and the gross total is 120.00.
Example 2: Extract VAT from a gross price
If the final invoice total is 120.00 and VAT is 20%, the net value is 100.00, and VAT included in that total is 20.00.
Why a VAT calculator is useful
A VAT tool saves time and reduces mistakes in invoices, purchase orders, bookkeeping, and budgeting. This is especially useful if you:
- Run a small business and issue invoices frequently.
- Need to verify supplier totals.
- Compare VAT-inclusive and VAT-exclusive pricing.
- Work with multiple countries or tax rates.
Common VAT mistakes to avoid
- Applying VAT twice: ensure you know whether a listed price is net or gross.
- Using the wrong rate: standard, reduced, and zero rates can differ by product type.
- Rounding too early: round only at the final step if possible.
- Confusing sales tax and VAT: they are not always calculated identically by jurisdiction.
Frequently asked questions
Is this calculator country-specific?
No. You can enter any VAT percentage, so it works for most countries that use VAT-style tax systems.
Can I use decimal VAT rates?
Yes. Enter values like 7.5, 12.5, or 19.6 directly in the VAT rate field.
Does this replace tax advice?
No. This tool provides accurate arithmetic, but local tax rules, exemptions, and filing requirements should be confirmed with your accountant or tax authority.
Quick takeaway
Use this VAT calculation calculator whenever you need fast, reliable tax math. Just choose whether you are adding VAT or extracting it, enter your amount and rate, and get instant net, VAT, and gross figures.