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Sales Tax Calculator

Plan a purchase, quote a customer, or check a receipt with this US sales tax calculator. It handles quantity, so it works for single items and bulk orders.

Formula / method: Subtotal = Price x Quantity. Sales tax = Subtotal x Tax rate. Total = Subtotal + Sales tax.

Enter your figures and click Calculate.

How to Use

  1. Enter the price per item.
  2. Enter the quantity.
  3. Enter the sales tax rate for the buyer's location.
  4. Click Calculate Sales Tax.
  5. Check the subtotal, tax, and total before you pay or quote.

Why This Matters

US sales tax is not one national rate. It varies by state, county, and city, and some items are exempt in some places. A price tag that shows $50 can become $54 or more at checkout, which surprises customers and breaks budgets. For sellers, quoting a total without tax leads to disputes and lost margin. Calculating tax by location before the sale keeps quotes honest and helps buyers compare the true cost of buying online versus in a local store.

Frequently Asked Questions

Why does sales tax differ between states?

Each state, and often each city or county, sets its own rate. Some states charge no sales tax at all, while combined local rates in other places are much higher.

Is shipping taxable?

It depends on the state and the type of sale. Some states tax shipping, others do not, and some tax it only in certain cases. Check the rules for the delivery state.

Are all products taxed the same?

No. Groceries, medicines, and clothing are exempt or taxed differently in some states, while most other goods are fully taxable.

Should I use the seller's or buyer's tax rate?

For most online sales, tax is based on the delivery address, but rules vary by state and seller size. Confirm the rule that applies to your sale.

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