Sales Tax Calculator
Calculate sales tax amounts, pre-tax item prices, and final purchase totals.
About Sales Tax Calculator
The Sales Tax & VAT Calculator computes tax-inclusive and tax-exclusive pricing, calculating the exact sales tax amount, subtotal, and total invoice cost with customizable state, provincial, and national VAT/GST rates.
How to Use Sales Tax Calculator
Step 1
Enter the item amount.
Step 2
Enter the tax percentage rate (e.g. 8.25% or 20%).
Step 3
Select calculation mode (Add Tax or Extract Tax).
Step 4
Review the computed net price, tax amount, and gross total.
Practical Use Cases for Sales Tax Calculator
E-Commerce & Retail Invoice Billing
Calculate sales tax amounts on retail merchandise and generate gross invoice figures for online checkout transactions.
Reverse Tax Calculation (Tax-Inclusive Pricing)
Extract the net base price and embedded tax portion from gross tax-inclusive prices (common in European VAT and Australian GST).
Input & Output Examples
Calculating 8.25% Sales Tax on $250.00 Item
Price: $250.00, Tax Rate: 8.25%
Tax Amount: $20.63 | Total Price: $270.63 | Formula: 250 × 0.0825
Key Features & Performance
- ✓Modes: Add Sales Tax (Exclusive) and Extract Sales Tax (Inclusive / Reverse VAT).
- ✓Preset tax rates for US states, Canadian GST/PST/HST, UK/EU VAT, and Australia GST.
- ✓Step-by-step mathematical breakdown for accounting audits.
- ✓100% Client-Side computation.
- ✓1-Click Copy calculation summary.
Key Terminology & Definitions
Tax-Exclusive Price
The base price of a product or service before sales tax is added at the point of sale.
Tax-Inclusive Price (VAT/GST)
A retail price that already includes the government sales tax or Value Added Tax within the displayed sticker price.