Effective Date: March 30, 2026
Website: https://usinvoicecalc.com
Support Email: support@usinvoicecalc.com
100% Local Browser Processing & Zero Server Data Retention.
Our application is engineered with a strict zero-backend architecture to guarantee maximum data privacy. We DO NOT upload, transmit, process, or store ANY user invoice data, financial records, vendor names, or locally parsed files on our servers.
To process large datasets efficiently, calculations utilize the user's local browser storage (IndexedDB) via client-side Web Workers. All data remains strictly confined to the user's physical device. We have absolutely zero visibility into your financial inputs, confidential documents, or the calculations performed.
Because the application operates entirely on your local machine, the only personal data we collect is your email address during the checkout process (facilitated via our Merchant of Record, Paddle). We use this email address exclusively for subscription management, license key delivery, and essential customer support. We do not process or store your payment details (e.g., credit card numbers); all financial transactions are handled securely by Paddle.