Sales Tax Calculator 計算機

此計算機用於 Estimate sales tax and total checkout price from a subtotal and tax rate.

Everyday 更新 2026-05-11

輸入

Subtotal ($) Tax rate (%)

Tax amount ($) 輸入數值後計算。

Total ($) 輸入數值後計算。

tax amount = subtotal x tax rate; total = subtotal + tax amount.

此計算機用於 Estimate sales tax and total checkout price from a subtotal and tax rate.

75 at 8.25% tax totals 81.19 before optional fees.

Use the combined state and local rate when both apply.

Shipping, tips, and service fees can have different tax rules.

What inputs does this calculator need?

Subtotal, Tax rate.

How should I round the result?

Keep extra digits while comparing values, then round for the final decision or report.

Can I reuse the result in another calculation?

Yes, but preserve the original inputs and units so the next calculation stays traceable.