Texas uses a state sales tax rate of 6.25%. Local jurisdictions (cities, counties, and special districts) may add up to 2.00%, for a maximum combined rate of 8.25%. This calculator lets you enter the purchase amount and the exact local rate for your location to estimate the total sales tax and final price.
The math is straightforward. First, the taxable amount is calculated by applying the taxable portion percentage. Then the state and local tax amounts are computed using their respective rates. Finally, the total tax is added to the original purchase price to show the final total you would pay.
Formula: Taxable Amount = Purchase Amount × (Taxable Portion ÷ 100). Total Tax Rate = State Rate + Local Rate. Total Sales Tax = Taxable Amount × (Total Tax Rate ÷ 100). Final Total = Purchase Amount + Total Sales Tax.
Example: If a laptop costs $1,200 and your local rate is 2.00%, the total rate is 8.25%. The taxable amount is $1,200. The total sales tax is $1,200 × 0.0825 = $99.00. The final total becomes $1,299.00.
Use this calculator for budgeting purchases, estimating checkout totals, or comparing costs across Texas jurisdictions. If an item is partially exempt (such as certain tax-free items or discounts), adjust the taxable portion accordingly to see the impact on the total tax.
function formatMoney(num){
return "$" + num.toFixed(2);
}
function calculateTexasSalesTax(){
var purchaseAmount = parseFloat(document.getElementById("purchaseAmount").value);
var stateTaxRate = parseFloat(document.getElementById("stateTaxRate").value);
var localTaxRate = parseFloat(document.getElementById("localTaxRate").value);
var taxablePercent = parseFloat(document.getElementById("taxablePercent").value);
if (isNaN(purchaseAmount) || isNaN(stateTaxRate) || isNaN(localTaxRate) || isNaN(taxablePercent)) {
document.getElementById("result").innerHTML = '