Overview
Overview
Differences between outward supplies reported in GSTR-1 and the liability discharged in GSTR-3B are a common trigger for notices.
We prepare both returns from a single reconciled dataset, track amendments and keep a monthly reconciliation that explains every difference.
Who this is for
- Businesses filing monthly returns
- Businesses with high invoice volumes
- Businesses that have received mismatch notices
Scope of work
The precise scope is confirmed in writing for each engagement. It typically includes:
- Invoice-level preparation of GSTR-1
- Liability and credit computation for GSTR-3B
- GSTR-1 vs GSTR-3B reconciliation
- Amendment tracking across periods
Documents usually required
- 01Sales register with invoice details
- 02Credit and debit notes
- 03Advance receipts
- 04Purchase register for credit computation
We share a checklist specific to your case. Please do not send identity or financial documents by email — existing clients can upload them securely through the client portal.
How we work
- 1
Initial discussion
We understand your situation, the period involved and what you need from the engagement.
- 2
Scope & document list
You receive a written scope and a checklist of the information we need.
- 3
Preparation & review
Our team prepares the work, which is then reviewed by a senior professional.
- 4
Your approval
We walk you through the outcome and obtain your confirmation before anything is filed or issued.
- 5
Completion & records
Filing or delivery is completed as applicable, and acknowledgements and working papers are shared or retained.
Frequently asked questions
Why do GSTR-1 and GSTR-3B differ?
Timing differences, amendments and errors can cause mismatches. We maintain a reconciliation so differences are explained and corrected in time.
Last updated 11 Oct 2026. This page is general information, not professional advice. Applicability depends on your facts and the law in force; we do not guarantee any particular outcome, saving, registration or approval.