Effective 20 September 2026. This policy describes the current CalcGST website, operated by Star Shop com (ABN 83 443 122 821). Privacy enquiries: [email protected].
Calculator inputs
GST, bulk and margin calculations run in your browser. We do not upload the amounts you enter to a CalcGST server. The ABN format checker runs locally; opening its official lookup link sends the number to the Australian Business Register.
Saved document drafts
The invoice, quote and receipt makers save one draft each in this browser’s local storage. A draft can include business and customer names, ABNs, contact details, line items, dates and any payment or bank details you enter in the notes. It is not encrypted by CalcGST and can be accessible to other people using the same browser profile.
Use “Clear saved draft” inside the tool to remove that draft, or clear this site’s data in your browser settings. Clearing browser data, private browsing and device changes can remove or prevent saving drafts. We cannot recover them. Downloaded PDFs and CSV files remain on your device until you delete them.
Website delivery
Cloudflare hosts and delivers the website. Network requests necessarily include technical information such as an IP address, browser details and requested URLs. Cloudflare may process these for delivery, security and abuse prevention under its privacy policy. Do not put private information in page URLs.
Contact emails
If you email us, we receive your email address and whatever you include. Contact mail is routed through Cloudflare to our Gmail inbox so we can respond and investigate issues. We use those messages for the enquiry and related records. Ask us by email about access, correction or deletion; some records may need to be retained for legitimate business or legal reasons.
Google Analytics and your choice
With your permission, we load Google Analytics 4 to understand visits and how the website is used. Google may process information such as pages visited, interactions, browser and device information, and approximate location. Analytics uses cookies, including _ga cookies, to distinguish visits. Network requests to Google also include your IP address. See Google’s privacy policy and how Google uses information from partner sites.
Analytics does not load until you choose “Allow analytics”. “No thanks” leaves it off and all tools remain available. Use “Analytics choices” in the footer to change or withdraw your choice. Withdrawal stops further collection on this browser and removes our Google Analytics cookies; it does not delete information already processed by Google. You can also use Google’s browser opt-out add-on.
We store your choice on this browser for up to 180 days. Clearing site data removes it. Our tag sets analytics cookies to expire after 180 days, with expiry renewed during use. We disable Google signals and advertising personalisation in the tag, and omit query strings and URL fragments from the page address passed to Analytics. We do not configure analytics events to send calculator amounts or document contents. Google may process analytics information outside Australia.
Advertising
Google AdSense is not enabled. If we introduce advertising, we will update this policy and the relevant consent controls before it loads.
External links and changes
External services have their own privacy practices. We may revise this policy when features or providers change and will update the effective date. Contact us if you have a question or concern about the handling of your information.