BYTETOOLS

Sales Tax Calculator

Add sales tax to a net price or extract tax from a gross price at any rate. See the net, tax and gross amounts instantly for receipts and invoices.

$100.00
Net (before tax)
$8.25
Tax amount
$108.25
Gross (with tax)

Breakdown

A 8.25% tax on $100.00 adds $8.25, for a total of $108.25.

Estimates only. Check your local tax rate — rates vary by region and product.

  • Add tax to a net amount or extract it from a gross amount
  • Shows net, tax and gross together
  • Works with any tax or VAT-style rate
  • Plain-English breakdown of the result
  • Any currency symbol, calculated locally
  • Private and free; estimates only, verify local rates

How to use the Sales Tax Calculator

  1. 1

    Choose your currency and select add or extract mode.

  2. 2

    Enter the amount (net for adding, gross for extracting).

  3. 3

    Enter the sales tax rate as a percentage.

  4. 4

    Read the net, tax and gross figures with a plain breakdown.

About the Sales Tax Calculator

The ByteTools Sales Tax Calculator handles tax both ways. Switch on 'add tax' to apply a rate to a net price, or 'extract tax' to pull the tax out of a gross, tax-inclusive price. Either way, it shows the net amount, the tax amount and the gross total clearly.

It is useful for shoppers checking a receipt, freelancers preparing invoices and sellers pricing products for a given tax rate. Because rates differ by region and product, you enter the exact percentage that applies to you.

All calculations run locally in your browser with nothing uploaded. The results are estimates — confirm your local rate — and are not tax or financial advice.

Frequently asked questions

How do I add sales tax to a price?

Multiply the net price by the tax rate and add it back on. For an 8% tax on a $100 net price, the tax is $8 and the gross is $108. Use the add mode and the calculator does this for you.

How do I work out the tax from a tax-inclusive price?

Divide the gross price by (1 + rate ÷ 100) to get the net, then subtract to find the tax. For a $108 gross at 8%, the net is 108 ÷ 1.08 = $100 and the tax is $8. The extract mode handles this automatically.

What sales tax rate should I use?

Use the combined rate that applies where the sale happens, which can vary by state, county, city and product type. Sales tax, GST and VAT rates differ widely, so check your local authority and enter that exact percentage.

Is sales tax the same as VAT or GST?

They are similar consumption taxes but work differently. Sales tax is charged once at the final sale, while VAT and GST are collected in stages along the supply chain. This calculator's add and extract modes work for any of them at a single rate.

Are my amounts kept private?

Yes. The tool runs entirely in your browser and never uploads your figures, so your prices and totals stay private.

Related tools