People in Japan type "tax calculator", "japan sales tax calculator" and "japan tax calculator for foreigners shopping" into Google. For the first of these, Google has been showing the Hub's salary calculator, which does not help someone looking at a price tag. So I built a consumption tax calculator, in the Hub's seven languages.
A price, a receipt
Type a price before tax or with tax and pick 10 % or 8 %. You get the other price, the tax, and the same price at the other rate: the difference between eating at a convenience store's tables and taking the food away. Add more prices and you get a receipt split by rate. The tax is rounded once on each rate's total, as on a qualified invoice. On the National Tax Agency's own example that gives 2,389 and 1,786 yen of tax, where rounding item by item gives 2,388 and 1,785.
Tax-free from 1 November
From 1 November 2026 a visitor pays the full price with tax, and the shop pays the tax back once customs has confirmed the goods are leaving Japan, within 90 days counted from the day after the purchase. Enter the day of purchase and the card shows what the till charges, what comes back and the last day for customs. For a purchase before 1 November it shows the rules that still apply: the price before tax at the till.
Who can use it
Tax-free is for visitors on a short stay. With a residence card you pay the price with tax like everyone else, but family and friends who come to see you can shop tax-free with their own passport. Below the calculator the page explains which goods pay 8 %, what price tags must show, the new rules step by step, and the four National Tax Agency documents it follows.
