Rejected a Credit Note in IMS — Why Did Your Liability Go Up Next Month?
GSTZone Desk · Updated 2026
Short answer
Because a credit note is meant to reduce your input tax credit to match your supplier’s reduced output tax — rejecting it disrupts that intended adjustment, and the system’s reconciliation of that disruption often shows up as an increased liability or ITC reversal in your next return instead.
In detail
A credit note isn’t just a courtesy document — it’s a formal GST adjustment. When your supplier issues one (for a genuine sales return, a price correction, a discount), it reduces THEIR output tax, and correspondingly is meant to reduce YOUR input tax credit by the same amount, since the value of the underlying transaction has genuinely gone down.
Rejecting that credit note in IMS is effectively telling the system you disagree with it or that it doesn’t apply to you — but the underlying commercial adjustment (the return, the discount) may still be real and already reflected on the supplier’s side. The mismatch this creates between what the supplier has claimed and what you’ve accepted typically resolves itself through the system pushing the adjustment onto your liability in the following period, since your ITC wasn’t reduced the way the credit note intended.
This is why rejecting a credit note you’re not actually disputing on the merits — perhaps just because you didn’t immediately understand it, or clicked the wrong option — tends to backfire rather than protect you. It’s a genuinely different action from rejecting a purchase invoice, and worth treating with more care.
GSTZone tip
Only reject a credit note when you’re specifically disputing its validity (you don’t agree the return or price adjustment actually happened) — and follow that rejection up directly with the supplier immediately, rather than leaving it unresolved into the next filing cycle.
Related questions
What should I do instead if I genuinely disagree with a credit note?+
Reject it, but immediately raise the disagreement directly with the supplier to resolve outside the portal too — a rejection alone doesn’t settle the underlying commercial dispute, it just flags a mismatch in the system.
Does accepting a credit note automatically reduce my ITC that same month?+
Yes — accepting a valid credit note reduces your available ITC correspondingly in the period it’s accepted, reflecting the genuine reduction in the value of that original supply.
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