Consumption Tax Calculator and Discount Calculation App

■ App Features

The Consumption Tax Calculator & Discount Calculator is a simple tax calculation app developed for staff working at supermarkets and retail stores.

Simply enter a price and the app instantly displays the consumption tax amount and the tax-inclusive price. No need for tedious mental arithmetic.

■ Main Features

【Consumption Tax Calculation】
・Supports both standard tax rate (10%) and reduced tax rate (8%)
・Bidirectional calculation: tax-exclusive to tax-inclusive and vice versa
・Accurate calculations with rounding down for fractional amounts

【Discount Calculation】
・Set discount rates from 5% to 50% with a single tap
・Automatically calculates consumption tax on the discounted amount
・Discount amount is displayed at a glance

【Calculation History】
・Calculation results are automatically saved
・View past calculations anytime

■ Recommended For

・Supermarket and retail store staff
・Those who want to quickly check tax-inclusive prices at the register
・Those who want to calculate tax-inclusive prices during discount sales
・Those who struggle with reduced tax rate calculations

■ Free to Use

Available free for up to 10 times per day.
In-app purchase (¥100, one-time purchase) removes the usage limit.

■ Privacy

We do not collect any personal information.
Calculation data is stored only on your device.