Sales tax · USD
United States
State-level examples only: California CDTFA and Texas Comptroller sales/use tax guidance.
The global calculator uses a percentage you enter. Selecting United States sets the currency, not the tax rate. Use the official references below to check the treatment applicable to your transaction.
Official references
- Know your sales and use tax rate California Department of Tax and Fee AdministrationOfficial reference. Check current applicability and any exceptions.
- Sales and use tax Texas Comptroller of Public AccountsOfficial reference. Check current applicability and any exceptions.
Important considerations
These two states do not constitute national coverage. Build a state-by-state source register, transaction-date and sourcing rules, product taxability and location resolution. IRS deduction tools are not checkout-rate authorities; ZIP-only lookup is insufficient.
Choosing the applicable treatment
Tax treatment can depend on location, transaction date, the goods or services supplied and the tax base. Check effective dates, exceptions and rounding requirements in the relevant guidance. These references are informational; independent professional validation of country rules is not yet complete.
Calculation method
For a single proportional percentage, add tax using net × rate ÷ 100. To extract included tax, divide the total by (1 + rate ÷ 100). This manual method does not determine whether that percentage legally applies.
Read the calculation and rounding limitations