Updated 8 November 2026

GSTCal uses a small number of cookies and similar technologies.

• Theme preference. Remembers whether you chose light or dark mode. This is stored in your browser and is not sent to us.

The calculators do not store or send what you type. Calculations run in your browser.

• Google AdSense. Shows advertising and sets cookies to measure ads and, with your consent where the law requires it, personalise them based on your visits to this and other websites. See how Google uses information from sites that use its services. You can turn off personalised ads in Google’s Ads Settings.
• Google Analytics, loaded through Google Tag Manager. Counts visits and shows which pages are used, in aggregate. You can opt out with the Google Analytics opt-out add-on.
• Cloudflare. Our hosting provider may set a strictly necessary cookie to protect the site from bots and attacks.

You can block or delete cookies in your browser settings. The calculators still work without them.

See our Privacy Policy for more about how information is handled.