Reverse VAT Calculator: How to Remove VAT From a Price

To remove VAT from a VAT-inclusive price, divide the total price by 1 + the VAT rate as a decimal. For example, if a product costs €120 including 20% VAT, divide €120 by 1.20 to get €100 before VAT. The VAT amount is therefore €20.

A reverse VAT calculator makes this calculation automatic. It can be useful when a receipt, invoice, selling price, or other amount already includes VAT and the VAT-exclusive price needs to be found.

What Is a Reverse VAT Calculator?

A reverse VAT calculator works backwards from a VAT-inclusive price to find the original price before VAT was added.

This is different from a standard VAT calculation. A standard calculation starts with a price excluding VAT and adds tax. A reverse calculation starts with the final price and separates the VAT from it.

For example, suppose a product is advertised at €125 including 25% VAT. Simply subtracting 25% from €125 would give the wrong answer.

The correct calculation is:

€125 ÷ 1.25 = €100 before VAT

The VAT included in the €125 price is therefore:

€125 − €100 = €25 VAT

This distinction matters because VAT is calculated as a percentage of the pre-VAT price, not as the same percentage of the final VAT-inclusive amount. Official guidance from HM Revenue & Customs illustrates the same principle by dividing a VAT-inclusive price by 1.20 when the VAT rate is 20%.

How to Calculate VAT Backwards

The basic reverse VAT formula is simple:

VAT-exclusive price = VAT-inclusive price ÷ (1 + VAT rate)

When the VAT rate is expressed as a percentage, the formula can also be written as:

Price excluding VAT = Gross price ÷ (1 + VAT% ÷ 100)

Once the VAT-exclusive price is known, the VAT amount can be found by subtracting it from the original VAT-inclusive price:

VAT amount = VAT-inclusive price − VAT-exclusive price

Example: Remove 20% VAT From €120

Start with a VAT-inclusive price of €120 and a VAT rate of 20%.

Convert 20% to a decimal:

20 ÷ 100 = 0.20

Add 1:

1 + 0.20 = 1.20

Divide the gross price by 1.20:

€120 ÷ 1.20 = €100

The price before VAT is €100.

The VAT included in the original price is:

€120 − €100 = €20

Why You Cannot Simply Subtract the VAT Percentage

One of the most common reverse VAT mistakes is taking the VAT-inclusive price and subtracting the stated VAT percentage.

For example, if the final price is €120 and VAT is 20%, this calculation is incorrect:

€120 − 20% = €96

The correct VAT-exclusive price is €100.

Why?

Because the €120 final price represents 120% of the original pre-VAT price. The VAT itself represents 20 percentage points of that original price, not 20% of the final €120.

In other words:

€100 + 20% VAT (€20) = €120

European VAT guidance recognizes this backwards calculation principle. For a VAT-inclusive price, the VAT element is calculated using the appropriate VAT fraction rather than simply taking the VAT rate as a percentage of the final price.

Reverse VAT Formula by VAT Rate

The divisor changes according to the VAT rate. A 20% VAT rate uses 1.20, while a 25% VAT rate uses 1.25.

The correct VAT rate depends on the country, product, service, and applicable tax rules. In the European Union, each member state sets its VAT rates within the framework of the EU VAT rules, and different goods or services may qualify for reduced or special rates.

Reverse VAT Examples

The following examples show how a backwards VAT calculator works with different VAT rates.

Removing 25% VAT From €250

For a VAT-inclusive price of €250 with 25% VAT:

€250 ÷ 1.25 = €200

The VAT amount is:

€250 − €200 = €50

So the price before VAT is €200 and the VAT included is €50.

Removing 21% VAT From €1,210

For a VAT-inclusive price of €1,210 with 21% VAT:

€1,210 ÷ 1.21 = €1,000

The VAT amount is:

€1,210 − €1,000 = €210

The original price before VAT is therefore €1,000.

Removing 10% VAT From €550

For a VAT-inclusive price of €550 with 10% VAT:

€550 ÷ 1.10 = €500

The VAT included is:

€550 − €500 = €50

So the VAT-exclusive price is €500.

When Should You Use a VAT Calculator Backwards?

A reverse VAT calculation is useful whenever the amount you have already includes VAT but you need to separate the tax from the underlying price.

• Checking the VAT included in a retail price
• Breaking down VAT-inclusive receipts
• Preparing accounting records
• Checking supplier invoices
• Finding the net price before VAT
• Comparing VAT-inclusive and VAT-exclusive prices
• Calculating VAT from a final selling price
• Checking whether a VAT calculation is correct

For businesses, the exact VAT treatment can depend on the transaction and applicable local rules. A calculator is useful for arithmetic, but it does not determine whether a particular sale is taxable or which VAT rate legally applies.

For example, EU guidance explains that VAT rates vary between member states and can also depend on the type of goods or services involved.

How to Find the VAT Amount From a VAT-Inclusive Price

If the final price already includes VAT, there are two useful figures to calculate:

• The price excluding VAT, sometimes called the net price
• The VAT amount included in the final price

First, divide the VAT-inclusive price by 1 + the VAT rate. Then subtract the result from the original price.

For example, suppose an invoice shows a total of €1,210 including 21% VAT.

First find the net price:

€1,210 ÷ 1.21 = €1,000

Then calculate the VAT:

€1,210 − €1,000 = €210

The invoice therefore contains €1,000 of goods or services and €210 of VAT.

The Reverse VAT Fraction

There is another way to calculate the VAT portion directly from a VAT-inclusive price.

The formula is:

VAT amount = Gross price × VAT rate ÷ (100 + VAT rate)

For a 20% VAT rate, the VAT fraction is:

20 ÷ 120 = 1/6

Therefore, when a price includes 20% VAT, the VAT portion is one-sixth of the VAT-inclusive price.

For example:

€600 × 20 ÷ 120 = €100 VAT

The amount excluding VAT is then:

€600 − €100 = €500

This is why a VAT-inclusive price should not be reduced by simply subtracting 20%. The correct VAT fraction is based on the total amount after VAT has already been added.

VAT Fraction Examples

The exact amount may differ by a few cents depending on the rounding method used on an invoice or accounting system.

Reverse VAT Calculator Examples by Country

The calculation method stays the same when the applicable VAT rate changes. What changes is the rate used in the formula.

For example, consider a VAT-inclusive price of €1,000.

This example shows why identifying the correct VAT rate is important. The same €1,000 final price can contain significantly different VAT amounts depending on the applicable rate.

VAT rates also differ between countries and may vary by product or service. For current rates, check the tax authority or official government information for the country involved.

How to Remove VAT From a Price Manually

A calculator is convenient, but the calculation can be done in seconds with a basic formula.

Step 1: Identify the VAT-Inclusive Price

Start with the amount that already includes VAT.

Call this the gross price.

Step 2: Identify the VAT Rate

Find the VAT percentage that applies to the transaction.

For example, use 20% for a transaction subject to a 20% VAT rate.

Step 3: Add the VAT Rate to 100%

For 20% VAT:

100% + 20% = 120%

Convert 120% to a decimal:

120% = 1.20

Step 4: Divide the Gross Price

Divide the VAT-inclusive price by the resulting number.

For example:

€360 ÷ 1.20 = €300

The price before VAT is therefore €300.

Step 5: Find the VAT Amount

Subtract the net price from the gross price:

€360 − €300 = €60

The final check is:

€300 + €60 = €360

This confirms that the calculation is consistent.

Reverse VAT for Invoices and Receipts

Reverse VAT calculations are especially useful when an invoice or receipt provides only a VAT-inclusive total.

For example, a receipt might show:

• Total paid: €2,420
• VAT rate: 21%

To recover the net amount:

€2,420 ÷ 1.21 = €2,000

The VAT amount is:

€2,420 − €2,000 = €420

This gives a useful breakdown for checking records:

Businesses should still follow the invoicing and VAT record-keeping rules that apply in their jurisdiction. The calculator only performs the mathematical calculation and does not determine the correct tax treatment of a transaction.

Common Reverse VAT Calculation Mistakes

Most reverse VAT errors come from using the right percentage in the wrong way.

Subtracting the VAT Rate Directly

As explained earlier, subtracting 20% from a VAT-inclusive price is incorrect when the goal is to recover the original pre-VAT price.

Use division instead:

Gross price ÷ 1.20

Using the Wrong VAT Rate

A calculation is only as accurate as the VAT rate entered.

Reduced rates, zero rates, exemptions, and special rules can apply to particular goods or services in some jurisdictions.

Rounding Too Early

Rounding the intermediate result too soon can create small differences in the final VAT amount.

For accounting purposes, use the rounding method required by the applicable tax rules or accounting system.

Confusing Net and Gross Prices

The net price is the amount before VAT.

The gross price is the amount after VAT has been added.

Reverse VAT calculations start with the gross amount and work back to the net amount.

Reverse VAT for Business Pricing and Accounting

A reverse VAT calculation can be useful when a business receives a VAT-inclusive price but needs to determine the underlying net amount.

This is common when checking supplier invoices, comparing product prices, preparing budgets, or reviewing expenses.

For example, if a business pays €1,452 including 21% VAT, the calculation is:

€1,452 ÷ 1.21 = €1,200

The VAT included in the total is:

€1,452 − €1,200 = €252

This calculation is useful for understanding the VAT component, but businesses should apply the VAT deduction and reporting rules required by their local tax authority.

Reverse VAT vs. Adding VAT

Adding VAT and removing VAT are opposite calculations, but they do not use the same operation.

This distinction is important because simply subtracting the VAT percentage from a VAT-inclusive price does not reverse the original calculation.

If €500 becomes €600 after 20% VAT is added, removing 20% from €600 would give €480, not €500.

The correct reverse calculation is:

€600 ÷ 1.20 = €500

How to Check a Reverse VAT Calculation

A quick verification can help catch mistakes before using the result in an invoice, budget, or financial record.

After calculating the net price, add the VAT back to it.

For example, suppose a VAT-inclusive price is €1,815 and the VAT rate is 21%.

First calculate the net amount:

€1,815 ÷ 1.21 = €1,500

Then add 21% VAT:

€1,500 × 1.21 = €1,815

Because the result returns to the original gross price, the calculation checks out.

Reverse VAT Calculation Examples

The following examples show how the same method works with different prices and VAT rates.

When Should You Use a Reverse VAT Calculator?

A reverse VAT calculator is useful whenever the starting amount already includes VAT and the pre-VAT price needs to be found.

• Checking VAT-inclusive retail prices
• Finding the net price on a receipt
• Separating VAT from business expenses
• Comparing supplier prices before VAT
• Preparing budgets using net amounts
• Checking invoice calculations
• Calculating the VAT portion of a final price
• Converting gross prices into net prices

It is especially helpful when working with several prices because the calculation can be performed consistently without manually rearranging the formula each time.

Reverse VAT Calculator vs. Standard VAT Calculator

The two calculators answer different questions.

If the price is already VAT-inclusive, use the reverse calculation rather than simply subtracting the VAT percentage.

Important: VAT Rates and Tax Rules Can Vary

The mathematical formula for removing VAT is straightforward, but the correct VAT rate depends on the transaction.

Different countries can have different standard VAT rates, and some countries apply reduced rates to specific goods and services.

Some transactions may also be zero-rated, exempt, or subject to special VAT rules.

For that reason, a reverse VAT calculator should be used with the correct applicable VAT rate. The calculator does not determine whether VAT should legally apply to a particular transaction.

For tax reporting, invoicing, and VAT recovery, businesses should follow the rules of the relevant tax authority or consult a qualified tax professional.

Key Takeaways

Removing VAT from a VAT-inclusive price is different from simply subtracting the VAT percentage.

• To remove VAT: divide the gross price by 1 + the VAT rate.
• To find the VAT amount: subtract the net price from the gross price.
• For 20% VAT: divide the VAT-inclusive price by 1.20.
• For 21% VAT: divide the VAT-inclusive price by 1.21.
• For 24% VAT: divide the VAT-inclusive price by 1.24.
• For 25% VAT: divide the VAT-inclusive price by 1.25.

The easiest approach is to enter the VAT-inclusive price and applicable VAT rate into a reverse VAT calculator and let it calculate both the net price and VAT amount.

Additional Resources

For official VAT information, always check the tax authority responsible for the country where the transaction takes place.

• European Commission: VAT Information
• OECD: Consumption Taxes