Sales-tax calculation
Multiply the taxable subtotal by the tax rate expressed as a decimal, then add the tax to the subtotal. Some locations combine state, county and city rates.
Why the checkout amount may differ
- Some products or services may be exempt
- Shipping and discounts may be treated differently
- Marketplace and destination rules can affect the rate
- Rounding may occur per item or per transaction
Educational estimate only; not tax advice.