GST compliance looks straightforward on paper, but small errors compound quickly into notices, blocked credit, and penalties. A handful of mistakes show up again and again.
The most frequent issue is invoice mismatch between GSTR-1 and GSTR-3B, usually caused by manual data entry across disconnected systems. Reconciling both before filing catches this early.
A close second is missing the input tax credit window entirely. Many businesses simply forget to claim credit they're legally entitled to, effectively overpaying tax every cycle.
Late filing is the most avoidable of all. Setting a compliance calendar with reminders, or handing filings to a dedicated team, removes the risk almost entirely.
Getting the fundamentals right consistently is worth more than any single optimisation.