Tax & Pricing
Sales Tax Calculator
Add sales tax to a pre-tax price, or extract the original pre-tax amount from a tax-inclusive total, with quick presets for common US and international rates.
🔒 All calculations happen instantly in your browser. No data is sent to any server.
How the Sales Tax Calculator Works
Adding Tax:
Tax Amount = Pre-Tax Price × (Tax Rate ÷ 100)
Total = Pre-Tax Price + Tax Amount
Removing Tax:
Pre-Tax Price = Gross Price ÷ (1 + Tax Rate ÷ 100)
Tax Amount = Gross Price − Pre-Tax Price
Example (add): $49.99 + 8.5% = $49.99 × 1.085 = $54.24 (tax: $4.25)
Example (remove): $54.24 ÷ 1.085 = $49.99 pre-tax (tax extracted: $4.25)
Sales Tax Calculator Insights & Strategic Planning
Good estimates help you plan your money with confidence. Use the numbers from the Sales Tax Calculator to set realistic goals, cut extra costs, and make smart financial decisions.
Planning Ahead
Small changes add up fast over time. Checking your numbers often helps you stay on track and build strong savings habits.
Smart Budgeting
Always pair your calculations with real daily spending needs. Keeping an emergency fund gives you peace of mind and flexibility.
Sales Tax Calculator Frequently Asked Questions
What is the average US sales tax rate?
The US average combined state + local sales tax rate is approximately 7.12%. It ranges from 0% (Oregon, Montana, New Hampshire, Delaware, Alaska) to over 10% in some Louisiana and Tennessee jurisdictions.
How do I back-calculate the pre-tax price from a receipt?
Switch to 'Remove tax from price', enter the receipt total, and enter the tax rate. The formula is: Pre-tax = Total ÷ (1 + rate). For a $54.24 total at 8.5%: $54.24 ÷ 1.085 = $49.99.
Is VAT the same as sales tax?
Functionally similar to the consumer, but structurally different. Sales tax is collected only at the final sale. VAT is collected at each stage of production but businesses reclaim what they paid, end consumers pay the full rate. Use the same formula for final-price calculations.
Which US states have no sales tax?
Oregon, Montana, New Hampshire, Delaware, and Alaska have no statewide sales tax. Alaska allows local jurisdictions to levy sales tax, so some Alaskan municipalities do charge it.
Do online purchases require sales tax?
Since the 2018 South Dakota v. Wayfair Supreme Court ruling, online sellers can be required to collect sales tax in states where they have economic nexus, even without a physical presence. Most major online retailers now collect state sales tax.
Are the numbers I enter into this calculator saved or tracked?
No. Every calculation runs right inside your browser using local code. Your salary, debts, and loan numbers stay completely private. Nothing is ever saved or sent to any server.
How should I account for taxes, inflation, and unexpected fees?
Most formulas show baseline estimates. In real life, keep local taxes, inflation, and bank fees in mind so your budget matches your actual costs.
Financial Calculation Disclaimer
The results from the Sales Tax Calculator are for general informational and educational use only. They are based on standard mathematical formulas and the numbers you enter.
BeYourTools is not a bank, lender, or financial advisor. This tool does not provide official tax or legal advice. Real rates and fees depend on your lender and local rules. For major financial decisions, please speak with a qualified professional. Read our complete Financial & Legal Disclaimer.