This tool helps you quickly calculate the total cost of an item including Arizona sales tax.

## Arizona Sales Tax Calculator

This calculator helps you estimate the total cost of a purchase including the sales tax based on the amount and the tax rate you enter.

### How to Use

- Enter the amount of your purchase in the “Amount” field.
- Enter the tax rate in the “Tax Rate” field. The default tax rate for Arizona is pre-filled (8.4%).
- Click the “Calculate” button to see the total cost including tax in the “Result” field.

### Calculation Explanation

The calculator works by taking the purchase amount and adding the estimated sales tax based on the provided tax rate. The formula used is:

`Total = Amount + (Amount * (Tax Rate / 100))`

### Limitations

Please note the following limitations:

- The calculator does not account for any exemptions or special rates that may apply in certain cases.
- The tax rate entered should be in percentage (e.g., for 8.4% tax rate, enter 8.4).
- The calculator requires valid numerical input to function correctly.