GST · Advanced Compliance

GST Interest Working File: Delayed Payment, ITC Reversal and RCM

Finin2min GST Desk·June 2026·7 min readINTEREST

Interest computation is often treated as an afterthought. Build a working file that identifies period, reason, tax amount, payment date, ledger use and approval.

Interest trigger table

Trigger	Working required
Delayed output tax payment	Tax period, due date, payment date and amount.
Excess ITC claim	Credit claimed, reversal date and eligibility facts.
Late RCM payment	RCM liability, payment and ITC claim timing.
Notice/mismatch correction	Tax and interest computation by issue.
Annual true-up	Month-wise liability and payment bridge.

Evidence file

Return/challan downloads.
Tax computation sheet.
Interest rate/legal basis note.
Ledger set-off and payment proof.
Approver sign-off before filing/reply.

Finin2min warning

Interest should not be guessed. Compute issue-wise and preserve the logic.

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Official sources used

This article is intentionally source-limited to official GST / CBIC / India Code material. Verify final filing positions with the latest Act, Rules, notifications, circulars and GST portal advisories before publishing.

FAQs

When is GST interest working needed? ▾

Delayed tax payment, excess ITC, late RCM or notice corrections can require interest review.

Should interest be approved? ▾

Yes. Material interest workings should be reviewed before payment/reply.

Why keep workings? ▾

They support notices, audit and management review.