Sales Tax Calculator
Add or remove sales tax from any price.
Enter your values
Enter the amount in $.
Enter the sales tax rate in %.
Choose one of: Add tax to this amount, Remove tax from this total.
Results update instantly as you type — no submit needed. Your values are remembered on this device, and the shareable link reopens the calculator with exactly these numbers.
- Total with tax
- $97.41
- Tax amount
- $7.42
- Price before tax
- $89.99
Quick answer
Sales tax added is price × rate; to remove tax from a total, divide by (1 + rate).
Total = price × (1 + rate); Net = total ÷ (1 + rate)
At a glance
| What it does | Add or remove sales tax from any price. |
|---|---|
| Category | Finance |
| Inputs needed | Amount, Sales tax rate, Mode |
| Main output | Total with tax |
| Formula | Total = price × (1 + rate); Net = total ÷ (1 + rate) |
| Cost | Free — no sign-up, no download |
How to use the Sales Tax Calculator
- 1Enter the amount you have.
- 2Enter your local sales tax rate.
- 3Choose whether to add tax or strip it out.
Inputs explained
- Amount($)
- Enter the amount in $.
- Sales tax rate(%)
- Enter the sales tax rate in %.
- Mode
- Choose one of: Add tax to this amount, Remove tax from this total.
Worked example
Using the values the calculator loads with:
Inputs
- Amount89.99 $
- Sales tax rate8.25 %
- ModeAdd tax to this amount
Results
- Total with tax$97.41
- Tax amount$7.42
- Price before tax$89.99
Frequently asked questions
How do I find my local rate?
Combine the state rate with county and city rates — total rates in the US range from 0% to over 10%.
What is reverse sales tax?
Working backwards from a tax-inclusive total to find the original price, done by dividing by 1 plus the rate.
What do I need to enter into the Sales Tax Calculator?
Just 3 values: amount, sales tax rate, mode. Every field starts with a realistic example, so you can change one number at a time and watch the result update instantly.
How does the Sales Tax Calculator work out the answer?
Sales tax added is price × rate; to remove tax from a total, divide by (1 + rate). It applies the formula Total = price × (1 + rate); Net = total ÷ (1 + rate) and shows the working so you can check each step by hand.
Is the Sales Tax Calculator free, and do I need an account?
It is completely free with no sign-up, no download and no usage limit. Everything is calculated in your browser, so the numbers you type never leave your device.
Results are estimates for general information. For medical, legal, structural or financial decisions, confirm with a qualified professional.