Sales Tax Calculator — Compute Price, Rate & Total Instantly

Our Sales Tax Calculator is the most versatile sales tax tool available. Unlike basic calculators that only compute after-tax totals, this tool can solve for any one of three unknowns given the other two — making it useful for both consumers and retailers.

Three Solve Modes

1. Before-Tax Price (Reverse Lookup)

Know the final receipt total and the tax rate? Work backwards to find the original pre-tax price. Essential for bookkeeping, expense reports, and VAT/GST invoice reconciliation.

2. Tax Rate

Have both the pre-tax and final price but not sure what rate was applied? The calculator computes the effective tax rate instantly — great for auditing invoices or understanding mixed-rate purchases.

3. After-Tax Price (Standard)

The classic mode: enter your pre-tax price and local tax rate to get the exact final amount due.

US State Sales Tax Rates (All 50 States + DC)

Our built-in quick-fill selector covers every US state and DC with current state-level base rates, so you don't need to look anything up. Just pick your state and the rate populates automatically.

Note: Local and county taxes may add additional percentages on top of state-level rates.

Advanced Features

• Discount (%): Apply a percentage discount before tax is calculated.
• Tip (%): Add a gratuity on top of the final price (ideal for restaurant checks).
• Quantity: Multiply results across multiple identical items for a single grand total.
• Grand Total View: See both the per-item total and the combined total for your quantity.

Visual Breakdown

The interactive doughnut chart shows you exactly where every dollar of your payment goes — clearly separating the pre-tax price, tax, tip, and any discount applied.

Disclaimer: US state rates shown are state-level base rates only. Local/county surcharges are not included. Always verify with your local tax authority.