Privacy policy

Calculator

The calculator runs entirely in your browser. The numbers you enter are not sent to or stored on our server.

Access logs and analytics

Our hosting provider (Cloudflare) may record standard access information such as IP address, browser type and pages visited, to operate and protect the site. We use Google Search Console to see how the site appears in search results; it does not identify individual visitors.

Advertising

This site may show ads from Google AdSense. Google and its partners use cookies to show ads based on your visits to this and other websites. You can turn off personalised ads in Google's Ads Settings (adssettings.google.com). Learn more at policies.google.com/technologies/ads.

Accuracy

We base the content on official sources and check it regularly, but we do not guarantee it is complete or up to date. We are not responsible for any loss arising from use of this site. For decisions, check the official pages or ask the Japan Pension Service, your tax office, or a professional.

Changes

This policy may be updated. The date of the last check is shown below.

Last checked: 2026-11-04