GST has entered its 9th year — and despite reforms, the same problems keep causing notices, penalties, and blocked returns for thousands of small businesses. This post covers the 7 most common GST issues we see across India in 2026, with plain-language explanations and practical fixes. Issue #1 — ITC Mismatch Between GSTR-2B and GSTR-3B (Most Reported) This is the single biggest source of GST notices in India. Your supplier files GSTR-1 late, or not at all — and your ITC in G