Quick start
- Open the VAT Calculator.
- Choose add VAT when your amount is the net price before tax.
- Choose remove VAT when your amount is the gross price that already includes VAT.
- Enter the VAT rate as a normal percent, such as 20 for 20% or 5 for 5%.
- Calculate, then check net amount, VAT amount, gross amount, and the official country or product rule before using the number on an invoice.
Best uses
Start here if one of these sounds like your job. The examples below show which inputs matter most.
- Add 20% VAT to a before-tax price.
- Remove 20% VAT from a tax-inclusive receipt total.
- Check 5%, 7.5%, 10%, or another custom VAT rate.
- Separate net amount, VAT amount, and gross amount before checking an invoice.
What this calculator is for
The VAT Calculator handles two common jobs: add VAT to a before-tax amount or remove VAT from a tax-included amount. It uses the rate you enter, so you still need the official rule for the country, product, invoice, export, exemption, or reverse charge situation.
Good fit examples: Add 20% VAT to a before-tax price. Remove 20% VAT from a tax-inclusive receipt total.
What to enter
Finance estimates are sensitive to small input changes. Check whether a field expects a monthly amount, annual amount, dollar value, or percent before calculating.
- Enter the amount as net amount when adding VAT, or gross amount when removing VAT.
- Enter the VAT rate as a normal percent, such as 20 for 20% or 5 for 5%.
- Choose add or remove before calculating. This is the part most people mix up.
Example walkthrough
Try the calculator example: Add VAT: $100 net at 20% VAT. The example result is $120 gross and $20 VAT.
- $100 net at 20% VAT adds $20 VAT and gives $120 gross.
- $120 gross at 20% VAT divides by 1.20 to get $100 net and $20 VAT.
- $210 gross at 5% VAT divides by 1.05 to get $200 net and $10 VAT.
Formula and steps
In plain language: To add VAT, the calculator multiplies net amount by the VAT rate, then adds that VAT amount to the net price. To remove VAT, it divides the gross price by one plus the VAT rate, then subtracts the net amount from the gross amount to find the VAT portion. For $100 at 20%, add mode multiplies 100 x 0.20 to get $20 VAT and $120 gross. For $120 with 20% included, remove mode divides 120 by 1.20 to get $100 net and $20 VAT.
If the estimate looks surprising, check the formula and inputs before using the answer in a budget, comparison, or planning note.
How to read the answer
Start with the headline result. Then read the supporting lines to see what made the number larger or smaller, such as rates, time periods, costs, taxes, fees, discounts, or contributions.
- Net amount is the price before VAT.
- VAT amount is the tax portion at the entered rate.
- Gross amount is net amount plus VAT.
- Rate used is the percent you entered, not a country lookup.
Common mistakes to avoid
Most bad finance estimates come from mixing rates, terms, monthly amounts, and annual amounts. The other common mistake is using a planning estimate as if it were a final quote.
- Do not use the wrong mode: add starts from net, remove starts from gross.
- Do not assume the entered rate is correct for every country, product, or invoice.
- Do not treat U.S. sales tax and VAT as the same tax system.
- Do not use this for registration, reverse charge, exemption, export, import, or tax filing decisions.
What to try next
A related money tool can help check the same question from another angle before you rely on one result.
- Use Sales Tax Calculator for U.S.-style sales tax math.
- Use Percentage Calculator to check rate math.
- Use Discount Calculator before VAT if the price is discounted first.
Sources and estimate notes
This guide links to public financial, consumer, statistical, or tax references where they are useful for understanding the calculator context.
Source links improve transparency, but they do not turn a quick calculator into professional advice or a final loan, tax, payroll, or investment answer.
Worked examples for VAT Calculator
$120 gross and $20 VAT
$100 net and $20 VAT
$200 net and $10 VAT
FAQ in plain language
When should I use the VAT Calculator?
Use it when you want to test the exact inputs on this page: Add 20% VAT to a before-tax price. Remove 20% VAT from a tax-inclusive receipt total. The result is a check against your assumptions, not proof that a lender, tax app, broker, platform, or provider will use the same number.
What do the main VAT Calculator inputs mean?
Amount means the price you already know. In add mode it is the net price; in remove mode it is the gross price. VAT rate means the tax rate entered as a normal percent, such as 20 for 20% or 5 for 5%. Mode means add VAT when the price is before tax, or remove VAT when the price already includes VAT.
How do I add 20% VAT to $100?
Use add mode, enter 100 as the amount, and enter 20 as the VAT rate. The calculator shows $20 VAT and $120 gross.
How do I remove 20% VAT from $120?
Use remove mode, enter 120 as the amount, and enter 20 as the VAT rate. The calculator divides by 1.20, so the net amount is $100 and the VAT amount is $20.
Can I use this as a UK VAT calculator?
Yes for the math if you enter the right UK rate yourself. GOV.UK lists 20% as the standard rate, with 5% reduced and 0% zero-rate categories, but the item or service still decides which rate applies.
Is VAT the same as U.S. sales tax?
No. The math can look similar on a receipt, but VAT and sales tax are different systems. If you are checking a U.S. sale, use the Sales Tax Calculator instead.
What is the VAT Calculator doing with my numbers?
In plain language: To add VAT, the calculator multiplies net amount by the VAT rate, then adds that VAT amount to the net price. To remove VAT, it divides the gross price by one plus the VAT rate, then subtracts the net amount from the gross amount to find the VAT portion. For $100 at 20%, add mode multiplies 100 x 0.20 to get $20 VAT and $120 gross. For $120 with 20% included, remove mode divides 120 by 1.20 to get $100 net and $20 VAT.
Related tools
- Sales Tax Calculator Find sales tax and final total from a subtotal and local rate.
- Percentage Calculator Find percent-of answers, percent change, discounts, markups, and reverse percentages.
- Discount Calculator Find final price after one or two discounts and optional tax.
Keep exploring
If this guide is close but not exact, these links keep you near the same kind of problem.
- Finance Browse the full category for related tools that help with the same job.
- All free tools Search the complete Access Free Tools library by task, category, or tool name.
- All calculator and utility guides Find more plain-language examples, formulas, mistakes, and result explanations.
- Free calculator resources Start here when you are not sure which calculator page fits.
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