Questions, answered.

Under 2 minutes. You enter the GSTIN, complete a one-time NIC OTP verification, and we cache a session token. From there, books-vs-2B reconciliation runs automatically and your first return is staged within seconds.

No. If you use QwikBills, the books sync is automatic. If you use Tally, BUSY, Marg or any other accounting software, upload the GSTN sheet (sales register / purchase register) and we map it to GSTR sections. Or use our bulk Excel template.

GSTFiler is currently invite-only. Drop us a line on the Contact page (or email support@octetlogictech.com) — we set up your workspace, walk you through onboarding, and connect your first GSTIN on a quick call. From there, books-vs-2B reconciliation runs automatically and your first return is staged within seconds.

Inside India. All data — GSTINs, returns, books, audit logs — is stored on encrypted databases in Mumbai (ap-south-1). No data leaves Indian borders for storage or processing.

Via a GSTN-approved channel (Whitebooks GSP). Every API call is HTTPS over TLS 1.3, your session token is held server-side only, and we never see your GST portal password. You authorise the connection with an OTP.

Only users you invite. Role-based access controls let you decide who sees which client. The audit trail records every read and write — exportable any time.

Yes. Hand us your previously-filed GSTR-1 / 3B JSONs (the portal lets you download them) and we ingest them so your filing calendar lights up with the correct status. We can also pull from QuickBooks, Tally, BUSY exports.

IMS auto-accept rules are easy to recreate — they're a small number of patterns. Our team helps configure them on a 30-minute call once you sign up.