Privacy Policy

Privacy Policy

Last updated: October 31, 2026

This policy explains what data Tax Invoice Billing collects and how it's used, whether you're using the web app or the mobile app — both connect to the same account and the same backend.

What we collect

• Account details Email address, and phone number if you provide one. Passwords are stored as salted hashes — we never store or can see your actual password.
• Firm/company details Your business name, address, GSTIN, bank account labels, and any logo, signature, or UPI QR image you upload — used to generate your invoice PDFs.
• Your customers' details Names, contact info, addresses, and GSTIN that you enter for the customers you bill — this is your business data, entered by you, not collected directly from your customers by us.
• Invoices, estimates & payments Line items, amounts, GST calculations, and payment records (cash/bank, amounts received) that you create.
• Basic usage data Standard web server logs (IP address, request timestamps) and login sessions, used for security and troubleshooting — not for tracking or advertising.

How we use it

Solely to provide the service: generating GST-compliant invoice/estimate PDFs, calculating tax breakdowns, tracking payments, powering your dashboard, and — if you use it — building the WhatsApp share link and Excel exports you request.

How we store it

Your data lives in our database, accessible only through your authenticated account. Uploaded images (logo, signature, UPI QR) are stored either on our servers or on Amazon S3, depending on configuration — in both cases, access is gated behind your account's authentication. All connections to the app use HTTPS encryption. Mobile app API access uses a token stored securely in your device's Keychain (iOS) or Keystore (Android), not in plain text.

Third parties

We don't sell or share your data with third parties for marketing. If you upgrade to a paid plan, payment processing for your own subscription is handled by Razorpay — we don't store your card details. If S3 storage is enabled for your account, Amazon Web Services stores your uploaded images on our behalf, under our access control.

Data retention & your rights

Your data is retained for as long as your account is active. Deleting an invoice or estimate removes that record from our database (though, as noted elsewhere in the app, it doesn't reduce your plan's lifetime usage count). To request a copy of your data, contact us using the details below. To delete your account, visit billtrack.arinasolutions.com/account/delete — this works whether or not you still have the app installed, and confirms by email before anything happens.

Children

Tax Invoice Billing is a business tool and isn't directed at children. We don't knowingly collect data from anyone under 18.

Changes to this policy

If this policy changes, we'll update the "last updated" date above. Continued use of the app after a change means you accept the updated policy.

Contact us

Questions about this policy or your data — email arinahpt@gmail.com.