Built to Make Tax Math
Simple for Everyone
ReverseSalesTax.com is a free tool platform that helps individuals, students, and small business owners calculate sales tax instantly — no sign-up, no fees, no confusion.
Why We Built This
Sales tax calculations can be frustrating — especially when you already know the final price and need to work backwards. We built ReverseSalesTax.com because we couldn’t find a clean, fast, mobile-friendly tool that just worked. So we made one.
Our goal is simple: give anyone — a shopper, a freelancer, an accountant — a free, accurate, and beautifully simple tool they can use in seconds from any device.
What We Stand For
Speed First
Our tools load instantly, work offline-ready, and give results the moment you type. No waiting, no loading spinners.
Accuracy You Can Trust
Every formula is verified. Our reverse sales tax and break-even calculations are based on standard financial math — not guesswork.
Privacy Respected
We don’t collect your inputs. Nothing you type into our calculators is stored, tracked, or sold. Your data stays yours.
Mobile-First Design
Built for thumbs as much as keyboards. Our tools are fully optimized for smartphones, tablets, and desktops.
Always Free
No premium plans, no paywalls, no email required. Our tools are free because we believe financial math should be accessible to everyone.
Education-Focused
Beyond the calculator, we explain the formulas, show worked examples, and help you understand the math behind the numbers.
What We Offer
ReverseSalesTax.com currently offers two powerful, free calculators:
Reverse Sales Tax Calculator
Enter the final price and tax rate — we instantly calculate the original pre-tax price and the exact tax amount. Perfect for shoppers, resellers, and accountants.
Try the Calculator →Break-Even Calculator
Calculate exactly how many units you need to sell to cover your costs. Essential for entrepreneurs, small business owners, and students.
Try the Calculator →Have a Question or Suggestion?
We love feedback. If something isn’t working or you’d like to see a new tool, reach out to us directly.
Contact Our Team →