Inputs and local storage
The calculator requires no account, name or bond serial number. Inputs are processed in your browser. Its bond list uses localStorage key sbc-bonds-v1, storing series, format, amount and dates. We do not upload this list to a server.
“Clear list” removes the stored list. Browser site-data controls can also remove it. If storage is blocked, the list stays in memory for the current visit and displays a notice. CSV downloads create files on your device; Print uses the browser’s print function.
Shared URLs and hosting
Shareable URLs contain calculation inputs. Recipients can read those inputs, but no owner identity or serial number is included. Value files are requested from the hosting service. The provider may process ordinary request information, such as an IP address, to serve and protect the site.
Advertising cookies
Google AdSense is not connected in this development build. If ads are enabled later, Google may use cookies for advertising and personalization. Read how Google uses partner-site data. Control personalization in Google Ad Settings or industry opt-out tools.
For the European Economic Area, United Kingdom and Switzerland, a certified consent platform must be configured before applicable advertising begins. A Privacy settings link appears when that platform is connected and applicable; it stays hidden otherwise. Any required “Do Not Sell or Share My Personal Information” controls will be reviewed before ads begin.
Email and changes
A mailto link uses your email provider and the project’s mailbox. Do not send account details or identifying documents. Direct privacy questions to Contact. The update date changes when this policy’s text changes.
Content updated 2026-10-03. Information only; not financial or tax advice.