2026-09-24 · 5 min read
GSTR-2B ITC Mismatches: What SME Owners Should Check
A plain-language guide to GSTR-2B vs books — why mismatches happen and when to get help before GSTR-3B.
GSTR-2B is the system view of ITC available for a period. If your purchase register does not match 2B, GSTR-3B becomes a guess — and guesses create notices.
Common causes: supplier not filed, wrong GSTIN on invoice, credit notes not posted, or bills sitting on WhatsApp instead of Tally/Zoho.
Before 3B: list open mismatches, chase suppliers for the ones that matter, and document why any ITC is deferred. Do not “plug” a number to make tax payable look neat.
Our retainers include basic GSTR-2B mismatch checks within package volume bands. WhatsApp a health check if you are already behind this month.