VAT / GST Calculator
Add or remove VAT/GST from any price at any rate.
Reviewed by the ToolNestr Editorial Team — July 2026
VAT/GST rates vary by country and change over time — enter your local rate and confirm it with the relevant tax authority. Estimate only, not tax advice.
How VAT / GST calculation works
Value-Added Tax (VAT) and Goods and Services Tax (GST) are consumption taxes applied to goods and services. The calculation uses a simple percentage of the net (pre-tax) price. When you need to add VAT, multiply the net price by (1 + rate/100). When you need to remove VAT from a gross (inclusive) total, divide by (1 + rate/100) to find the net amount.
The formulas are straightforward. To add VAT: Total = Amount × (1 + Rate / 100) and VAT = Amount × Rate / 100. To remove VAT: Base = Total / (1 + Rate / 100) and VAT = Total − Base. The same math applies whether you call it VAT, GST, or sales tax — the percentage rate is the only variable.
Worked example
Adding VAT: £100 at 20% VAT → £100 × 0.20 = £20 VAT → £100 + £20 = £120 total (price including VAT).
Removing VAT: £120 including 20% VAT → £120 ÷ 1.20 = £100 (price before VAT) → £120 − £100 = £20 VAT.
Common VAT and GST rates around the world
VAT and GST rates vary significantly by country. Some countries apply reduced rates for specific goods like food, children's clothing, or books. The rates below represent the standard rate in each jurisdiction.
When to use the VAT / GST calculator
The VAT calculator is essential for anyone who deals with pricing across different tax jurisdictions. Freelancers and small business owners frequently need to calculate VAT when invoicing clients in different countries. For example, a UK freelancer invoicing a client for £500 needs to add 20% VAT to show the total amount due: £500 + £100 VAT = £600. Similarly, a freelancer in Germany invoicing €1,000 at 19% VAT needs to show €1,190 as the total.
Expense tracking is another common use case. When you receive a receipt that includes VAT, you may need to remove the tax to record the net expense in your accounting software. For example, if you paid £240 for a business expense that includes 20% VAT, dividing by 1.20 gives you the net cost of £200 with £40 reclaimable VAT. This is crucial for accurate bookkeeping and VAT return preparation.
Pricing products for different markets often requires adjusting for varying VAT rates. If you sell digital products across Europe, you might need to display prices with the VAT rate of each customer's country. Understanding how to add the correct tax rate ensures your pricing remains accurate and compliant across borders.
Invoicing
Issue accurate invoices showing net price, VAT amount and gross total. Essential for freelancers and small businesses registered for VAT.
Expense tracking
Remove VAT from receipts to record net expenses and track reclaimable VAT for your business accounts.
Multi-market pricing
Calculate prices with different VAT/GST rates when selling to customers in different countries or regions.
VAT return prep
Separate VAT from your sales and purchase totals when preparing your VAT return or BAS statement.
How to use the VAT / GST calculator
Enter the amount
Type the price — either the net price (to add VAT) or the gross total (to remove VAT).
Set the rate & mode
Enter or pick a VAT/GST rate preset. Toggle between "Add VAT" and "Remove VAT" mode.
See the breakdown
View the net price, VAT amount and gross total instantly. The labels update based on your mode.
VAT / GST tips and best practices
B2C prices usually include VAT
In most countries, the price displayed to consumers (B2C) must include VAT by law. This is called the "inclusive" price. When shopping or selling to consumers, always use the gross figure that includes tax.
B2B prices often exclude VAT
Business-to-business transactions typically quote prices excluding VAT because the buyer can reclaim the tax. Make sure you know whether a quoted price is net or gross before calculating.
Verify local rules
VAT rules differ by jurisdiction — reduced rates, exemptions, thresholds for registration, and reverse-charge mechanisms all apply. Always verify your specific obligations with a local tax professional or your country's tax authority.
Why accurate VAT / GST calculation matters
Accurate VAT calculation is critical for both legal compliance and financial planning. If you are registered for VAT, your invoices must show the correct net amount, VAT rate, VAT charged, and gross total. An error in VAT calculation can lead to penalties from tax authorities, disallowed input tax credits, and disputes with customers. For businesses operating across multiple EU countries under the One Stop Shop (OSS) scheme, applying the correct VAT rate for each member state is essential.
For consumers, understanding VAT helps you compare prices fairly. A price displayed as €119 including 19% VAT has a net value of €100. When comparing prices across countries with different VAT rates, removing the tax gives you a true like-for-like comparison of the underlying product cost. This is particularly useful when making large purchases or evaluating subscription services priced in different currencies.
Freelancers and contractors benefit significantly from accurate VAT handling. When you set your rates, you need to decide whether they are inclusive or exclusive of VAT. A common mistake is quoting an all-inclusive price without factoring in the VAT you must remit to the tax authority. If you charge £600 inclusive of 20% VAT, you only keep £500 — the £100 must be paid to HMRC. Understanding this distinction prevents cash flow problems when your VAT return is due.
The calculator handles decimal amounts accurately, which matters for real-world transactions. A €49.99 item at 21% VAT (common in the Netherlands and Belgium) results in a VAT amount of €10.50 and a total of €60.49. Manually rounding these figures can lead to discrepancies in invoices and VAT returns. Our calculator uses precise decimal arithmetic to ensure your figures are accurate every time.
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Frequently asked questions
What is the difference between VAT and GST?
Very little — both are consumption taxes. VAT is used in the EU/UK, GST in Australia/India/Canada. They work the same way.
How do I remove VAT from a total?
Divide the total by (1 + rate/100). For 20% VAT: total ÷ 1.20 = price before VAT.
What are common VAT rates?
UK 20%, Germany 19%, France 20%, Australia GST 10%, Canada GST 5%, Singapore 9%.
Is VAT included in the listed price?
In most countries the displayed price must include VAT (B2C). For business-to-business, prices are often exclusive.
Sources & references
This tool uses standard formulas and reference values from:
- • IRS — federal tax brackets, standard deduction and instructions for the tax year. irs.gov
- • U.S. SEC — Investor.gov, compound interest and investment reference material. investor.gov
- • Official national tax authority for the relevant country — link the exact rate schedule used.
Estimates only, not tax or financial advice. Confirm current figures with the official source or a qualified professional.