Resolving GSTR-2A vs 2B Mismatches Like a Pro

By Swarnjeet Singh Rooprha • July 1, 2026 • 8 min read

The introduction of GSTR-2B completely changed the Input Tax Credit (ITC) landscape in India. While GSTR-2A is dynamic, GSTR-2B is static, locking in ITC eligibility based on strict cut-off dates.

Why do mismatches occur?

Mismatches primarily happen when suppliers file their GSTR-1 late (after the 11th of the following month). The invoice will reflect in the dynamic 2A immediately, but won't appear in 2B until the next month's static generation.

This creates a reconciliation nightmare. Claiming ITC based on 2A without checking 2B leads to notices. Conversely, forgetting to claim ITC next month when it finally hits 2B costs the client money.

Automating the Tracking

The best practice is maintaining a rolling ITC ledger. If an invoice is in the purchase register but not in 2B, it must be parked in a temporary ledger. ClarityCA automates this process by tagging invoices with "ITC Deferred - Pending 2B" statuses, allowing you to instantly roll them over to the next month's filing without manual spreadsheet tracking.