Sales Tax Calculator
Add sales tax to a price or work backward from a tax-inclusive total. Your work stays on this device whenever possible.
How to use Sales Tax Calculator
- Choose a Calculation Mode: "Add Sales Tax (Tax-Exclusive / Net to Gross)", "Extract Sales Tax (Tax-Inclusive / Gross to Net)" or "Find Tax Rate (from Net and Gross prices)".
- Type the price in Amount ($), then the State / Primary Tax Rate (%) and, if applicable, the Local / City / County Tax Rate (%, optional).
- Or click a preset such as "Preset: Texas (8.25%)" or "Preset: UK VAT (20%)"; it fills both rate boxes and recalculates.
- In Find Tax Rate mode, put the pre-tax price in Amount and the tax-inclusive price in the State / Primary Tax Rate box.
- Press "Calculate sales tax" and use "Copy Result" to keep the summary.
What Sales Tax Calculator does
Add sales tax to a price or work backward from a tax-inclusive total.
Sales Tax Calculator is built to add sales tax to a price or work backward from a tax-inclusive total.
Worked example
Choose Extract mode, Amount 214.00, State 5.5% and Local 1.5%. The combined rate is 7%, so net = 214.00 ÷ 1.07 = 200.00 and tax = 14.00. That tax is split in proportion to the two rates: state 14.00 × 5.5 ÷ 7 = 11.00 and local 3.00. The summary lists pre-tax 200.00, tax 14.00 and total 214.00.
When Sales Tax Calculator is the right tool
- Finding how much tax is hidden inside a tax-inclusive receipt total.
- Adding state and city tax to a quote before sending it to a customer.
- Working out the effective tax rate from a net and gross invoice amount.
How to verify the result
The final Sales Tax Calculator output should visibly match this goal: Add sales tax to a price or work backward from a tax-inclusive total.
Important limitations
Sales tax rates and exemptions vary by tax jurisdiction, postal code, and product category (e.g. prepared food vs groceries). Confirm specific local rules with your state revenue agency.
A free Sales Tax Calculator alternative
People looking for Sales Tax Calculator often compare products such as Calculator.net, WolframAlpha. ToolkitPoint is not affiliated with those services. This page keeps add sales tax to a price or work backward from a tax-inclusive total free and available without an account; features, limits, and policies on other products can change, so compare their current product pages before choosing.
Frequently asked questions
What is the difference between add and extract?
Add multiplies a pre-tax price by the combined rate to get a total. Extract works backward from a tax-inclusive price by dividing by one plus the rate, which is the correct way to find tax inside a receipt total.
Are the presets exact?
They are approximate combined rates for illustration. Local rates change and depend on address and product type, so confirm the current rate with the relevant tax authority or invoice.
How is tax split between state and local?
In add mode each rate is applied to the net price. In extract mode the total tax is shared in proportion to the two rates. Rates are not compounded on each other.
How does UK VAT fit this tool?
Use the UK VAT preset with 20% as the primary rate and 0 local, then extract mode to strip VAT from a gross price, or add mode to add it. It does not handle reduced rates or reverse-charge rules.
Why does Find Tax Rate look odd?
That mode reuses the primary-rate box for the gross price. The result gives the effective rate as (gross − net) ÷ net, and refuses a gross price lower than the net price.