Chartered Accountant · ICAI M.No. 153926 · FRN 136869W
What happens
Returns are sequential — an unfiled month blocks the next. Fees and 18% interest accrue, and your customers can’t claim ITC on your sales.
Cancellation risk
Continued non-filing leads to a cancellation notice and eventual cancellation of your GSTIN, which is disruptive to recover from.
From blocked filing to cancellation
The consequences escalate. Because returns are sequential, one unfiled month blocks the next, so fees and 18% interest accrue across a growing stack. Your buyers can’t see your invoices in their GSTR-2B until you file GSTR-1, so they lose — or reverse — the input credit on your sales, which strains customer relationships. The e-way bill facility can be blocked after two consecutive unfiled GSTR-3Bs, which can halt your dispatches. Continued default leads to a notice in REG-17 and, if unanswered, cancellation of the GSTIN; once cancelled, you must file a final return (GSTR-10) and you can’t issue tax invoices. Revival is possible — you apply for revocation of cancellation within the allowed window after filing all pending returns and paying the dues — but it’s disruptive and time-bound. The practical message is that the cost of catching up never falls by waiting: file the oldest pending return first, clear the dues, and restore current filing before the e-way bill block or a cancellation notice turns a fee problem into an operational one. Acting at the first missed month is far cheaper than after cancellation.