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The Sales Tax Calculator can compute any one of the following, given inputs for the remaining two: before-tax price, sale tax rate, and final, or after-tax price.
A Sales Tax Calculator is a fast and reliable online tool that helps you determine the tax amount and final price on any product or service. Whether you’re a shopper, seller, or small business owner, this tool instantly shows how much tax you’re paying — or charging — based on your region’s tax rate.
It saves time, reduces errors, and is 100% free to use.
Calcnest’s Sales Tax Calculator works in 3 simple steps:
Enter the original price
Add the sales tax rate (e.g., 5%, 7.5%, 18%)
Click Calculate
You’ll instantly see:
Tax amount
Total price including tax
Price before tax (for reverse calculation)
No math, no stress — just instant accurate results.
Here’s what sets our tool apart:
Completely free — no ads or sign-up
Works on mobile, tablet, desktop
Supports global tax systems (USA, UK, Canada, India, etc.)
Reverse tax calculation available
Supports inclusive and exclusive tax pricing
Shopkeepers comparing prices with/without tax
Small businesses calculating final price
Freelancers and consultants issuing invoices
Students learning about taxation
Accountants verifying tax totals
International buyers calculating import tax
Our calculator uses this basic formula:
Tax Amount = Original Price × (Tax Rate ÷ 100)
Total Price = Original Price + Tax Amount
Reverse Calculation (Find Price Before Tax):
Original Price = Total Price ÷ (1 + Tax Rate ÷ 100)
Both forward and reverse tax calculations are supported.
Calcnest’s Sales Tax Calculator supports:
🇺🇸 United States – state-by-state tax rates (NY, CA, TX, etc.)
🇨🇦 Canada – GST, HST, PST
🇬🇧 United Kingdom – VAT at 20%
🇮🇳 India – GST (0%, 5%, 12%, 18%, 28%)
🇦🇺 Australia – 10% GST
🌐 Custom rates for any country
Want to know the original price before tax from a total amount?
Just click on “Reverse Calculation”, enter the total price and tax rate, and our tool instantly tells you the price before tax and the tax amount.
Our tool is built to rank for queries like:
“Sales tax calculator”
“Calculate sales tax online”
“Price with tax calculator”
“Sales tax inclusive vs exclusive”
“Reverse tax calculator”
“GST calculator online”
“How to calculate tax on product”
If you prefer to calculate tax yourself:
Multiply the product price by the tax rate (in decimal form)
Add the tax amount to the original price
That’s your total price!
Or just use our tool — it’s faster and avoids manual mistakes!
Tips include:
Buy during tax holidays
Shop online from tax-free states
Know your region’s threshold exemptions
Keep records for tax refunds
Whether you’re running a business, preparing invoices, shopping internationally, or just want to double-check a receipt, Calcnest’s Sales Tax Calculator gives you accurate, instant, and stress-free results. Try it now — and take control of your taxes!
Yes! It’s 100% free with no ads or hidden fees.
Absolutely! It’s designed for individuals, freelancers, and companies.
Yes! You can enter any tax rate, including GST, VAT, or custom tax values.
Yes, simply enter the total price and tax rate to find the pre-tax amount.
Calcnest.online is your go-to platform for accurate, fast, and free online calculators. From finance to fitness, we help simplify your daily calculations so you can focus on what matters most.