Add VAT to a net quote
Add mode: 100 net at 20%
- Net
- 100.00
- VAT
- 20.00
- Gross
- 120.00
A net quote of 100 becomes 120 gross. The extra 20 is the VAT component to show separately on the arithmetic check.
🧾 VAT Calculator – Add or Remove VAT
Use this free VAT calculator to add VAT to a net price or remove VAT from a VAT-inclusive total.
Enter an amount, select Add VAT or Remove VAT, and provide the applicable rate. The calculator instantly displays the net price, VAT amount, and gross total.
The same percentage formula works with different currencies. Keep the input and results in the same currency throughout the calculation.
🧮 VAT and Reverse VAT Calculator
Choose whether to add VAT to a net price or extract VAT from a gross total.
Enter a rate from 0% to 100% that applies to the specific product, service, location, and transaction.
💰
Net Price
—
📊
VAT Amount
—
🧾
Gross Price
—
📝 Enter a valid amount and a VAT rate from 0% to 100% to see the result.
Estimate disclaimer: This calculator provides a mathematical estimate only. VAT rates, exemptions, place-of-supply rules, invoicing, rounding, reclaim eligibility, and reporting requirements vary. Confirm the applicable treatment with an official tax authority or qualified adviser.
🔄 Are You Adding VAT or Removing It?
Choose the mode from the kind of amount you already have. Add VAT starts with a net amount; Remove VAT starts with a gross amount that already includes VAT.
| You have | Choose | The calculator finds | Typical use |
|---|---|---|---|
| Net amount before VAT | Add VAT | VAT amount + gross total | Prepare a quote or estimate the VAT-inclusive price |
| Gross amount with VAT included | Remove VAT | Embedded VAT + original net amount | Review an inclusive invoice or separate VAT from a payment |
📚 Net, VAT, and Gross Are Three Different Numbers
💰 Net amount
The amount before VAT. In Add mode, this is the number you enter; in Remove mode, it is calculated from the VAT-inclusive gross amount.
📊 VAT amount
The tax component. It is calculated from the net amount, even when you begin with a gross total that already contains VAT.
🧾 Gross amount
The amount including VAT. In Add mode, this is the calculated total; in Remove mode, it is the number you enter.
Net amount + VAT amount = Gross amount
⚠️ Why Removing VAT Is Not the Same as Subtracting the VAT Rate
The VAT percentage is based on the net amount, not on the larger gross amount. Subtracting the same percentage from the gross therefore uses the wrong base.
Incorrect shortcut
120 − 20% of 120 = 96
Production calculation
120 ÷ 1.20 = 100 net; 120 − 100 = 20 VAT
Use Remove VAT to divide the inclusive total by one plus the decimal VAT rate. The tool then identifies the net amount and the VAT already embedded in the gross total.
🏷️ VAT-Inclusive vs VAT-Exclusive Prices
VAT-exclusive
VAT has not yet been included. Choose Add VAT when this is the amount you have and you need the gross total.
VAT-inclusive
VAT is already part of the displayed amount. Choose Remove VAT when you need to separate that total into net and embedded VAT.
Confirm which type of price is shown before entering it. Using an inclusive amount in Add mode or a net amount in Remove mode answers a different question.
🌍 What VAT Rate Should You Enter?
Enter the rate that applies to the specific jurisdiction, product or service, customer, and transaction. FigureNorth does not choose a country, fetch a live rate, or determine the legal classification.
Zero-rated and VAT-exempt are not the same concept
A 0% rate mathematically produces zero VAT, but that does not mean the calculator has classified the transaction as zero-rated or exempt. Those categories can have different legal and reporting consequences.
The calculator performs arithmetic using the rate entered. Confirm standard, reduced, zero, exempt, or out-of-scope treatment with an official authority or qualified adviser when it matters.
🧾 VAT Calculations for Quotes and Invoices
- ✓ Add VAT to a supplier's or contractor's net service price.
- ✓ Check the VAT amount and gross total on a quotation.
- ✓ Separate net and embedded VAT from a VAT-inclusive invoice total.
- ✓ Review whether net + VAT agrees with the stated gross amount.
- ✓ Budget for a purchase when the quoted price excludes VAT.
This is an arithmetic check, not an invoice-compliance tool. It does not decide whether VAT is chargeable, reclaimable, subject to reverse charge, or correctly reported.
🔍 Why an Invoice Can Differ by a Few Cents—or More
The same headline rate can produce a different invoice total when the invoice uses a different taxable base or rounding method.
- • Tax may be rounded on each line rather than once on the invoice total.
- • A supplier may apply discounts or shipping before or after particular VAT steps.
- • One invoice can contain standard, reduced, zero-rated, or exempt lines.
- • Currency conversion and supplier-specific precision can change displayed amounts.
- • Multiple VAT rates require separate line calculations; this tool accepts one rate at a time.
To investigate a difference, calculate each rate group separately and compare the supplier's stated rounding policy. This calculator does not automatically model mixed-rate invoices.
🧮 Worked VAT Examples Using the Production Calculator
Every example below calls the same calculateVat() function as the interactive tool.
Remove VAT from an inclusive invoice total
Remove mode: 120 gross at 20%
- Net
- 100.00
- VAT
- 20.00
- Gross
- 120.00
A VAT-inclusive total of 120 contains 100 net and 20 VAT. Subtracting 20% from 120 would incorrectly produce 96.
Check a zero-rate calculation
Add mode: 75 net at 0%
- Net
- 75.00
- VAT
- 0.00
- Gross
- 75.00
At an entered rate of 0%, VAT is zero and gross remains 75. The calculation does not determine whether zero-rating is legally applicable.
➗ VAT Formulas Used by FigureNorth
Add VAT
VAT = Net × (Rate ÷ 100)
Gross = Net + VAT
Remove VAT
Net = Gross ÷ (1 + Rate ÷ 100)
VAT = Gross − Net
The production function retains JavaScript numeric precision and does not round currency internally. The page formats displayed results to two decimal places.
One amount and one user-entered rate are processed at a time. Quantities, multiple invoice lines, discounts, shipping, currency conversion, and mixed VAT rates are not modeled automatically.
📚 Method, Scope, Sources, and Review
Method: Add mode multiplies net by the entered rate. Remove mode divides gross by one plus the decimal rate and calculates the VAT embedded in that gross amount.
Calculation version: VAT Calculator V3
Last reviewed: August 15, 2026
Method reviewed against: GOV.UK VAT calculation guidance
Maintained by: FigureNorth Editorial Team
Review status: Add/remove VAT arithmetic and educational content reviewed; the applicable rate and legal treatment are not determined.
❓ FAQ
📊 What is the difference between net, VAT, and gross?
Net is the amount before VAT, VAT is the tax component, and gross is the amount including VAT. Their relationship is net + VAT = gross.
➕ How do I add VAT to a net price?
Choose Add VAT, enter the net amount and rate, and the calculator returns the VAT amount and gross total. At 20%, a net amount of 100 produces 20 VAT and 120 gross.
➖ How do I remove VAT from an inclusive price?
Choose Remove VAT and enter the VAT-inclusive gross amount and rate. The calculator divides gross by one plus the decimal rate to find net, then identifies the embedded VAT.
⚠️ Why can't I simply subtract the VAT percentage?
Because VAT is calculated from net, while the gross amount is larger and already includes VAT. With 20% VAT, 120 gross contains 100 net and 20 VAT; subtracting 20% of 120 would incorrectly give 96.
🌍 Does FigureNorth know which VAT rate applies?
No. The calculator accepts a rate from 0% to 100% but does not select a country, fetch current rates, or determine the legal treatment of a product, service, customer, or transaction.
0️⃣ Can I use a 0% VAT rate?
Yes. A 0% input returns zero VAT and equal net and gross amounts. That arithmetic result does not classify the transaction as zero-rated or VAT-exempt.
🧾 Does this handle multiple VAT rates or mixed invoices?
Not in one calculation. The tool accepts one amount and one rate at a time. Calculate each rate group separately, then compare the combined results with the invoice.
🔍 Why might an invoice differ by a few cents?
Line-by-line versus invoice-level rounding, discounts, shipping, mixed rates, exempt lines, currency conversion, and supplier precision can all create differences.