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To find the tax amount and total transaction price, multiply the net price by the combined local sales tax rate.
Sales Tax = Net Price × Sales Tax Rate; Total Price = Net Price + Sales TaxDetermines the pre-tax price of an item when you only know the gross price paid including sales tax.
Pre-Tax Price = Gross Price ÷ (1 + Sales Tax Rate)Most sales taxes consist of state, county, city, and district taxes added together.
Combined Sales Tax Rate = State Rate + County Rate + City RateUpdated: July 2026
Buying electronics worth $1,200 in Los Angeles County, which has a combined sales tax rate of 9.5%.
→ Sales tax: $114; Total price: $1,314
Purchasing a $1,500 laptop in Oregon, one of the five US states without a general sales tax.
→ Sales tax: $0; Total price: $1,500
A hotel bill or purchase total of $537.50 in a city with an 7.5% sales tax rate to find the pre-tax base cost.
→ Pre-tax base price: $500; Sales tax portion: $37.50
Sales tax in the US is determined by a combination of state, county, and municipal tax rates. This calculator determines the total tax amount and final purchase price of goods and services, or extracts pre-tax prices from gross transactions.