ReturnPilot prioritizes user data privacy. All GST return data generation, PDF downloads, Excel compilation, and JSON operations execute 100% locally on the user's device inside the browser. No GST portal credentials, financial data, or taxpayer invoices are ever collected, transmitted, or stored on external servers. For subscription validation, only the user's license key and status are verified with https://kasyhq.com. Full policy available at: https://kasyhq.com/privacy