Combined rates vary by city and county; check your state revenue department.
Adding and removing tax
Total = price × (1 + rate). $80 at 8.25% is $86.60. To find the pre-tax price from a total, divide: $86.60 ÷ 1.0825 = $80.00.
Which rate to use
Most US purchases pay a state rate plus county and city rates. Alaska, Delaware, Montana, New Hampshire and Oregon have no statewide sales tax, though some Alaska towns charge a local one. Your receipt or your state revenue department shows the combined rate for your address.
Frequently asked questions
How do I remove sales tax from a total?
Divide by 1 + rate: $108.25 ÷ 1.0825 = $100.
Do you pay sales tax on online orders?
Usually yes; since the 2018 Wayfair decision, most states require larger online sellers to collect it.
Is tax charged on tips?
A voluntary tip is generally not subject to sales tax; mandatory service charges often are.