Sales tax is a government-imposed tax added to the price of goods and services. The vendor collects it from the buyer at the time of purchase and forwards it to the government. Different regions apply different tax rates, making it difficult to manually calculate sales tax. With our online sales tax calculator, you can instantly compute the exact tax amount without errors. It works for state sales tax, local sales tax, VAT and GST.

Using our sales tax calculator online is simple and quick. Just follow these steps:

1. Enter the amount of your purchase in the given box.
2. Choose whether the price is GST Inclusive or GST Exclusive.
3. Enter the sales tax rate (or select your state, ZIP code and country to fetch the local rate).
4. Click on the “Calculate Sales Tax” button to get instant results.

The tool will display the tax amount, the net price and the total cost including sales tax.

GST Inclusive: The final price already includes sales tax. The calculator helps you separate the tax from the total.

GST Exclusive: The given price does not include sales tax. The calculator adds the tax amount to show the final cost.

To get accurate results, simply enter:

• Amount: The purchase price of the product or service.
• Sales Tax Rate: The applicable percentage (varies by location).
• ZIP Code, City & Country: To calculate sales tax by ZIP code or local rules.

Our tool uses the formula:

Sales Tax = Purchase Amount × (Tax Rate ÷ 100)

It then adds the calculated tax to the original price if you’ve chosen GST Exclusive, or extracts it if GST Inclusive is selected. This ensures accurate, error-free and instant results for any state or country.

Sales tax rates vary widely:

• United States: State and local sales taxes differ; some states have no sales tax.
• Canada: Uses GST, PST, or HST depending on the province.
• European Union: VAT (Value Added Tax) applies instead of sales tax.
• Other Countries: Many apply GST or VAT at national levels.

Our sales tax calculator by ZIP code adapts automatically to regional differences, saving you time and effort.

Manual tax calculations can be tedious and prone to mistakes, especially with different regional tax rules. Our calculator solves this problem by giving instant, accurate and free results. It is perfect for:

• Shoppers: Know the final price before purchasing.
• Business Owners: Calculate accurate billing with sales tax included.
• Freelancers & Online Sellers: Add correct tax rates for invoices.
• Travelers: Estimate shopping costs in different states or countries.

✔ Free & Unlimited Use — no sign-up required.
✔ Works Worldwide — calculate sales tax by ZIP code, city, or country.
✔ Handles GST Inclusive & Exclusive values.
✔ Fast & Accurate results within seconds.
✔ Cross-Platform — works on desktop, mobile, iOS android, Windows and Mac.

Yes, your privacy is fully protected. The online sales tax calculator doesn’t store or request personal information. All calculations are done instantly on your device without saving any data. You can use it freely with full confidence.

Purchase Amount: $100
Sales Tax Rate: 8%
Calculation: 100 × (8 ÷ 100) = $8
Final Price (GST Exclusive): $108
          

This shows how our calculator works in real scenarios — no manual effort, just instant answers.