Sales Tax Calculator

Q: What is the difference between Exclusive of tax and Inclusive of tax mode?

Exclusive of tax mode takes a net, pre-tax price and adds the tax on top. Use it when you know what a product or service costs before tax and want to calculate the total to charge or pay. Inclusive of tax mode takes a gross, tax-included total and extracts the tax component. Use it when you already know the total price and want to determine how much of it is tax and how much is the net price. Selecting the wrong mode will produce an incorrect result.

Q: How do I calculate US sales tax at checkout?

Sales tax in the United States is normally added at checkout on top of the listed price rather than included in the displayed price. Select Exclusive of tax mode, enter the listed item price, then enter the combined state and local sales tax rate for your location. Click Calculate. The result shows the tax amount and the total to pay.

Q: What tax rate should I enter?

Enter the tax rate that applies to your specific transaction, product or service category, and location. Common examples include UK VAT at 20 percent, EU VAT rates that vary by country, US sales tax rates that vary by state and city, Australia GST at 10 percent, and Canadian GST or HST rates that vary by province. Some goods and services may be zero-rated, exempt, or taxed at reduced rates, so always verify the correct current rate with the relevant tax authority or your accountant for any official calculation.

Q: Can I use this calculator for business invoicing?

Yes. The calculator is suitable for calculating the tax amount to add to your fees and the total to charge clients. For VAT-registered businesses, invoices typically need to show the net amount, the tax rate applied, the tax amount, and the gross total. The calculator provides those figures in Exclusive of tax mode. For more complex invoicing needs, such as multiple tax rates, international VAT rules, or reverse-charge mechanisms, dedicated accounting software may be more appropriate.

Q: How do I calculate tax on multiple items at different rates?

Calculate each tax-rate group separately. Group together the items that share the same tax rate, calculate the subtotal for each group, and then calculate tax on each subtotal using the appropriate rate. Finally, add together the net subtotals and the tax amounts to get the final totals. For example, if you have 80 pounds of items taxed at 20 percent and 30 pounds of zero-rated items, the total VAT is 16 pounds and the gross total is 110 pounds.

Calculate sales tax and total price instantly. Enter the amount and tax rate to see how much tax you pay and the final cost. Ideal for shopping, invoicing, budgeting, and business planning. Free, fast, and easy to use.

Inclusive of tax

Exclusive of tax

Result

Net Amount
Tax Rate
Gross Amount

Sales Tax Calculator

The Sales Tax Calculator computes the tax amount and total price for any given net or gross amount and tax rate. It operates in two modes: Exclusive of tax (add tax to a pre-tax price) and Inclusive of tax (extract tax from a tax-included total). Enter the amount and rate, select the mode, and click Calculate Tax. The result shows the net amount, tax amount, and gross amount.

Sales tax, VAT, GST, and equivalent consumption taxes are applied at different rates depending on the country, state, province, and goods or service category. The calculator handles any rate — enter the exact rate applicable to your location and transaction.

How to use the Sales Tax Calculator

Select the mode: Exclusive of tax if you know the pre-tax amount and want to calculate the total; Inclusive of tax if you know the total and want to extract the tax component.
Enter the amount in the first field.
Enter the tax rate as a percentage (e.g. 20 for 20% VAT, 8.25 for 8.25% state sales tax).
Click Calculate Tax. The result table shows the net amount, tax rate, and gross amount.

Exclusive of tax vs Inclusive of tax — the formulas and when to use each

The two modes solve different problems and use different formulas. Selecting the wrong mode produces an incorrect result — this is the most common source of calculation errors with tax tools:

	Exclusive of tax	Inclusive of tax
What you enter	The net price (before tax is added). The price the seller charges before tax.	The gross price (total including tax). The price the customer actually pays.
What the calculator does	Adds tax on top: Gross = Net × (1 + Rate/100). Shows the tax amount and the total price to pay.	Extracts the tax from the total: Net = Gross ÷ (1 + Rate/100). Shows the original net price and how much of the total is tax.
Formula (Tax amount)	Tax = Net × (Rate ÷ 100)	Tax = Gross − (Gross ÷ (1 + Rate/100))
Example at 20% tax	Net price: £100. Tax: £100 × 0.20 = £20. Gross total: £120.	Gross price: £120. Net: £120 ÷ 1.20 = £100. Tax: £120 − £100 = £20.
When to use it	You know the pre-tax price and want to calculate the final amount payable. Freelancer invoicing (adding VAT to fees), retail pricing (showing shelf price + tax), business cost estimation.	You know the total price already paid and want to find how much of it was tax. Expense reporting, verifying a receipt, bookkeeping for VAT-inclusive purchases.

The most common mistake is using Exclusive of tax when the price already includes tax. If a product is listed at £120 including 20% VAT and you enter £120 in Exclusive of tax mode, the calculator adds £24 of tax on top and returns £144 — which is wrong. The correct approach is Inclusive of tax mode: enter £120 and 20%, which correctly returns £100 net + £20 tax. Always confirm whether the price you are entering is before or after tax.

The formulas

Exclusive of tax — adding tax to a net price

Tax amount: Net × (Rate ÷ 100)

Gross total: Net × (1 + Rate ÷ 100)

Example at 20% VAT: Net = £100. Tax = £100 × 0.20 = £20. Gross = £100 × 1.20 = £120.

Inclusive of tax — extracting tax from a gross price

Net amount: Gross ÷ (1 + Rate ÷ 100)

Tax amount: Gross − (Gross ÷ (1 + Rate ÷ 100))

Example at 20% VAT: Gross = £120. Net = £120 ÷ 1.20 = £100. Tax = £120 − £100 = £20.

A common error when reverse-calculating tax from an inclusive price is to calculate Net = Gross × (Rate ÷ 100) and subtract — this gives the wrong answer. For a £120 total at 20% VAT: 120 × 0.20 = £24, giving a net of £96 — incorrect. The correct formula divides by (1 + Rate/100): 120 ÷ 1.20 = £100 net, £20 tax. The tax was 20% of the net price (£100), not 20% of the gross (£120).

Common tax rates by country — reference

The calculator accepts any rate you enter. The table below provides a quick reference for standard rates in major markets. Rates vary by goods category, date, and jurisdiction — always verify the current rate applicable to your specific transaction:

Country / Region	Standard rate	Notes
United Kingdom	20% VAT	Value Added Tax. Standard rate 20%. Reduced rate 5% (domestic energy, children's car seats). Zero rate 0% (most food, children's clothing, books).
European Union (varies)	17–27% VAT	Each EU member state sets its own VAT rate. Germany: 19%. France: 20%. Italy: 22%. Ireland: 23%. Denmark: 25%. Luxembourg: 17% (lowest). Hungary: 27% (highest).
United States (varies by state)	0–10.25% Sales Tax	No federal sales tax. State-level tax ranges: Oregon, Montana, New Hampshire, Delaware — 0%. California — 7.25% state (highest base rate, local additions up to 10.25%). Most states: 4–7%. Some cities add a local surcharge on top of the state rate.
Canada	5–15% GST/HST	Federal Goods and Services Tax (GST): 5%. Combined Harmonized Sales Tax (HST) in participating provinces: 13–15%. Quebec, British Columbia, Saskatchewan, Manitoba add a separate provincial tax.
Australia	10% GST	Goods and Services Tax: 10% on most goods and services. Exempt categories include basic food, medical services, and education.
India	5–28% GST	Goods and Services Tax with multiple slabs: 0%, 5%, 12%, 18%, 28%. Rate depends on the specific goods or service category. Some items have additional cess on top of the 28% rate.
UAE / Saudi Arabia	5–15% VAT	UAE: 5% VAT. Saudi Arabia: 15% VAT (increased from 5% in 2020). Both introduced VAT in 2018 under GCC agreements.

Common use cases

Scenario	Use mode	How to calculate
Freelancer adding VAT to an invoice	Exclusive of tax	Enter your fee as the net amount and your country's VAT rate. The result shows the tax amount to add and the gross total to charge the client. Example: £500 fee + 20% VAT = £600 total invoice.
Verifying how much VAT is in a price you paid	Inclusive of tax	Enter the total price you paid and the tax rate. The result shows the net price and the tax component. Example: you paid £72 for a service with 20% VAT — enter £72 as the gross and the calculator shows £60 net + £12 tax.
Shopping — estimating the total at checkout	Exclusive of tax	Enter the shelf or listed price (pre-tax) and the applicable state/local sales tax rate. The result shows how much tax will be added and the total you will pay. Useful in US states where prices are displayed without tax.
Expense reporting — extracting VAT from receipts	Inclusive of tax	When claiming VAT on business expenses, enter the total on the receipt and the VAT rate to find the net amount and the VAT component. This is the figure to enter in the VAT reclaim section of your expense form or accounting software.
Setting retail prices to achieve a target net revenue	Exclusive of tax	Enter your target net revenue as the amount and the applicable tax rate. The result is the gross price to display on the product. Example: you want £50 net from a sale with 20% VAT → charge £60 gross.
Importing goods — estimating import duty and tax	Exclusive of tax	Customs and import duties are typically applied to the declared value of goods. Enter the declared value and the applicable tax rate to estimate the tax due. Note: import duty rates are set by the importing country's customs authority and vary by goods category.

Calculating tax on multiple items

For a purchase or invoice with multiple items, the correct approach depends on how tax is applied in your jurisdiction:

In most jurisdictions, calculate the subtotal of all items first, then apply the tax rate to the subtotal. This produces the total tax in one calculation. Example: three items at £40, £65, and £30 = subtotal £135. Tax at 20% = £27. Total = £162.
Some items may have different tax rates (e.g. UK: standard 20% on electronics but zero-rated on food). Calculate tax on each group separately at the applicable rate, then sum the totals.
Do not apply tax to individual items and round each one separately before summing — rounding individual item taxes can produce a different total than applying tax to the subtotal. Use the subtotal method for accuracy.

Usage limits

Account type	Daily calculations
Guest	25 per day
Registered	100 per day

Related tools

Percentage Calculator — the percentage calculator includes 'X plus P% is what?' and 'What plus P% is Y?' formulas that perform the same calculations as exclusive and inclusive tax modes. Use it for more complex percentage operations alongside tax calculations.
Discount Calculator — calculate sale prices, savings, and original prices from percentage discounts.
Average Calculator — calculate average transaction values, average tax rates across multiple transactions, or mean costs from a set of purchases.

Frequently asked questions

What is the difference between Exclusive of tax and Inclusive of tax mode?

Exclusive of tax mode takes a net (pre-tax) price and adds the tax on top — use it when you know what a product costs before tax and want to calculate the total to charge or pay. Inclusive of tax mode takes a gross (tax-included) total and extracts the tax component — use it when you know the total price already and want to know how much of it is tax and how much is the net price. Selecting the wrong mode produces an incorrect result.

How do I calculate VAT on an invoice?

Select Exclusive of tax mode. Enter your fee or service amount as the net price. Enter your country's VAT rate (20% for the UK, 19% for Germany, etc.). Click Calculate. The result shows the VAT amount to add and the gross total to invoice your client. Example: a £500 design fee with 20% UK VAT → VAT amount £100, total invoice £600. Your invoice should show the net price, the VAT rate, the VAT amount, and the gross total.

How do I find the VAT amount in a price that already includes VAT?

Select Inclusive of tax mode. Enter the total tax-included price. Enter the VAT rate. Click Calculate. The result shows the net price and the VAT component. Example: you paid £96 for a service with 20% VAT → enter £96 and 20% in Inclusive mode → net £80, VAT £16. The common mistake is to multiply the total by the rate (£96 × 20% = £19.20) — this gives the wrong answer because the tax percentage is calculated on the net price, not the gross.

How do I calculate US sales tax at checkout?

Sales tax in the United States is applied at checkout on top of the listed price — not included in the displayed price. Select Exclusive of tax mode. Enter the item's listed price. Enter the combined state and local sales tax rate for your location (e.g. 8.875% for New York City, which combines state, city, and MTA surcharge). Click Calculate. The result shows the tax amount and the total to pay.

What tax rate should I enter?

Enter the rate that applies to your specific transaction, goods or service category, and location. Common rates include: UK VAT 20%, EU VAT typically 17–27% (varies by country), US sales tax 0–10.25% (varies by state and city), Australia GST 10%, Canada GST 5% to HST 15%. Some goods are taxed at reduced or zero rates — food, medical supplies, and educational materials commonly receive exemptions or reductions. Always verify the current applicable rate with your tax authority or accountant for any official calculation.

Can I use this calculator for business invoicing?

Yes — for calculating the tax amount to add to your fees and the total to charge clients. For UK and EU VAT-registered businesses, invoices must show: the net amount, the VAT rate applied, the VAT amount, and the gross total. The calculator provides all four figures in Exclusive of tax mode. For more complex invoicing needs (multiple tax rates, international VAT rules, reverse-charge mechanisms), use dedicated accounting software such as Xero, QuickBooks, or Free Agent.

How do I calculate tax on multiple items at different rates?

Calculate each tax-rate group separately. Group the items that share the same tax rate, calculate the subtotal for each group, then calculate tax on each subtotal using the applicable rate. Sum the net subtotals and tax amounts for the final totals. Example: £80 of standard-rated items at 20% VAT (tax: £16) plus £30 of zero-rated items (tax: £0) → gross total £110, total VAT £16.

Is the Sales Tax Calculator free?

Yes. The calculator is free within the daily usage limits shown above. Guest users can perform 25 calculations per day without creating an account. Registering a free ToolsPiNG account increases the daily limit to 100 calculations per day.