SimpleTax Sales Tax Calculator

Know the exact price before or after Tax—in seconds. SimpleTax is a fast, precise Sales Tax Calculator for shopping, retail price checks, invoicing, and budgeting. Enter the values you know and instantly calculate Before Tax, Tax Rate, Tax Amount, or Total. CALCULATE IN ANY DIRECTION • Add Tax to a Before Tax price • Reverse-calculate the Before Tax price from a Tax-included Total • Find the Tax Rate from a price and Total • See the Tax Amount at a glance • Enter any custom Tax Rate ACCURATE MONEY RESULTS • Precise, currency-aware calculations • Commercial half-up rounding • Support for currencies with 0, 2, or 3 decimal places • Optional currency increments, including CHF 0.05 • Before Tax + Tax always equals Total MADE FOR EVERYDAY USE • Quick, easy entry for percentage-based Tax calculations • Fast numeric keypad • Multiple currencies • Light, dark, and system appearance • Custom themes • Optional haptic feedback • Designed for iPhone and iPad PRIVATE BY DESIGN SimpleTax works entirely on your device. No account, no tracking, no analytics, and no data collection. Your latest calculation and preferences stay locally on your device. Perfect for checking a final shopping price, preparing an invoice, comparing Tax Rates, or working backward from a Tax-included Total. Download SimpleTax and get a clear, reliable answer whenever you need it.