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DRC-01C under Rule 88D is auto-issued when GSTR-3B ITC exceeds GSTR-2B ITC by more than ₹1 lakh or 20% (whichever is lower). Legitimate claims — IGST import ITC via ICEGATE, RCM self-invoiced credits, and amendments — look like excess claims to the portal unless the reply explains each delta within the seven-day window.
Gap classification splits the GSTR-3B minus GSTR-2B variance into IGST import (Bill of Entry), RCM self-invoice, ISD distribution, previous-period catch-up, or true excess. Each category maps to DRC-01C Part B option (a) payment, (b) eligible ITC with evidence, or (c) other reasons. IMS actions for the next period are adjusted to prevent repetition.
Rule 88D threshold monitor, ICEGATE Bill of Entry evidence fetcher for IGST imports, RCM self-invoice register link, and seven-day reply SLA with DRC-03 workflow for true excess.
DRC-01C Part B reply draft with category-wise variance explanation, ICEGATE and BoE evidence pack, DRC-03 payment for any confirmed excess, and root-cause ticket to adjust IMS actions or RCM booking for future periods.
DRC-01C is triggered when the ITC claimed in GSTR-3B exceeds the ITC available in GSTR-2B by more than ₹1 lakh or 20% of GSTR-2B ITC, whichever is lower. The GST system issues this auto-notice after each GSTR-3B filing, and you have seven days to reply on the GST portal. Ignoring it moves the matter toward a Section 73 or 74 demand.
What Is DRC-01C and the ITC Mismatch It Captures
DRC-01C is issued under Rule 88D of the CGST Rules. It is a system-generated notice, not a manual assessment — the GST portal compares your GSTR-3B Table 4 (ITC availed) against GSTR-2B (ITC available) after you file each month.
The notice is issued when: ITC claimed in GSTR-3B minus ITC in GSTR-2B is more than ₹1 lakh or 20% of GSTR-2B ITC, whichever is lower. From FY 2024-25, this comparison runs automatically for every GSTIN after each GSTR-3B submission.
DRC-01C does not mean you have made an incorrect claim. It means the GST system cannot auto-reconcile your claim to GSTR-2B. Your reply explains why.
Why ITC in GSTR-3B Is Higher Than GSTR-2B
| Reason | Legitimate? | DRC-01C Reply Option |
|---|---|---|
| IGST on imports (not in GSTR-2B, in ICEGATE) | Yes | Option (b) — specific eligibility |
| Transitional ITC (TRAN-1/TRAN-2) | Yes | Option (b) — transitional credits |
| Opening balance ITC from previous period | Yes | Option (b) — opening balance |
| IMS Pending invoices claimed before appearing in GSTR-2B | No | Option (a) — pay via DRC-03 |
| ITC on credit notes (supplier reduced invoice, ITC reversed in error) | Depends | Option (c) — with explanation |
| Supplier filed after GSTR-2B cutoff but ITC claimed same month | Marginal | Option (b) or (c) with evidence |
| ITC above GSTR-2B with no supporting explanation | No | Option (a) — pay via DRC-03 |
How to Access and Reply to DRC-01C on the GST Portal
Step 1: Log into the GST portal. Navigate to Services → Returns → DRC-01C.
Step 2: Select the GSTIN and tax period shown in the notice.
Step 3: Review the notice details — the portal shows the GSTR-2B ITC, the GSTR-3B claimed ITC, and the excess amount that triggered the notice.
Step 4: Click “Reply” to open DRC-01C Part B. Select the applicable reply option.
Step 5: Enter the relevant details — DRC-03 challan number if paying, or the specific ITC eligibility grounds if using option (b). Submit.
Step 6: Save the acknowledgement reference number generated after submission.
The seven-day reply window starts from the date on the notice. Filing a partial or incomplete reply is better than filing no reply — it creates a record that you engaged with the notice.
When Excess ITC Claim Is Legitimate: Imports, Opening Balance, Transitional ITC
Three categories of ITC routinely cause DRC-01C even when the claim is entirely correct:
IGST on imports: When you import goods and pay IGST at the port, that ITC does not flow through GSTR-1 and therefore does not appear in GSTR-2B. It must be claimed in GSTR-3B Table 4A(1) based on Bills of Entry. The gap between GSTR-2B and GSTR-3B for importers is structural, not an error. In the DRC-01C reply, provide Bill of Entry references and ICEGATE acknowledgements under option (b).
Opening balance ITC: ITC that was eligible but not claimed in prior periods (subject to Section 16(4) time limits) may be claimed in a later period. If the opening balance credit exceeds the GSTR-2B ITC for the current month, the difference causes a DRC-01C trigger. The reply should document the prior-period invoice references and the reason for delayed claim.
Transitional ITC (TRAN-1/TRAN-2): Legacy credits brought in under the GST transition mechanism may still be available for eligible taxpayers who filed TRAN returns. These credits predate the GSTR-2B system and will always show as GSTR-3B ITC without a corresponding GSTR-2B source.
When You Must Pay Back the Excess ITC: DRC-03 Voluntary Payment
If the ITC claimed in GSTR-3B genuinely exceeds what is available under any eligible category, the correct resolution is to pay the excess back via DRC-03 with interest at 18% per annum from the original claim date.
DRC-03 payments for DRC-01C must be made in the Electronic Cash Ledger — they cannot be offset against the Electronic Credit Ledger. The DRC-03 challan reference number is then entered in the DRC-01C Part B reply under option (a).
Do not delay making the DRC-03 payment to contest the notice under option (c) if the underlying ITC claim is not supportable. Interest accrues daily at 18% per annum from the date the excess ITC was availed, and contesting an ineligible claim typically results in the same payment obligation plus a penalty.
DRC-01C and IMS: How IMS Actions Prevent These Notices
A significant portion of DRC-01C notices arise from ITC being claimed in GSTR-3B on invoices that are still Pending in IMS and therefore absent from GSTR-2B. This is the most preventable category.
The mechanism: a finance team claims ITC from the purchase register without completing IMS actions. Several invoices are in Pending status — not yet Accepted in IMS and therefore not yet in GSTR-2B. The GSTR-3B ITC includes these invoices. GSTR-2B does not. The difference triggers DRC-01C.
The prevention: complete IMS Accept actions before filing GSTR-3B. The GSTR-3B ITC should be derived from GSTR-2B, not from the purchase register directly. Any invoice not yet Accepted in IMS should not be claimed in GSTR-3B for that month — it should be deferred to the month it appears in GSTR-2B after IMS acceptance.
The full IMS-to-GSTR-2B-to-GSTR-3B workflow is covered in the GSTR-2B reconciliation guide and the GST IMS reconciliation workflow article.
Consequences of Non-Response to DRC-01C
The seven-day response window on DRC-01C is not advisory — it carries specific escalation consequences that compound if missed.
GSTR-1 filing blockage. From FY 2024-25, non-response to a DRC-01C notice within the seven-day window can trigger a filing blockage on GSTR-1 for subsequent periods. The GST portal prevents the taxpayer from filing outward supply returns until the DRC-01C Part B reply is submitted. For businesses that rely on timely GSTR-1 filing to maintain customer ITC flow, this blockage creates a downstream compliance chain reaction — your customers cannot claim ITC on your invoices until your GSTR-1 is filed.
Rule 21(e) registration cancellation risk. Where the ITC claimed in GSTR-3B exceeds 105% of the ITC available in GSTR-2B — and the taxpayer does not respond to DRC-01C or file a satisfactory explanation — the proper officer may initiate proceedings under Rule 21(e) to cancel the GST registration. Registration cancellation is a severe action that requires a fresh registration application and renders all interim invoices non-compliant.
Section 73/74 demand proceedings. Unanswered DRC-01C notices escalate to formal demand proceedings. Under Section 73 (applicable where there is no fraud or suppression), the demand includes the excess ITC amount, interest at 18% per annum from the date the ITC was availed, and a penalty of 10% of the tax due. Under Section 74 (applicable where fraud, wilful misstatement, or suppression of facts is alleged), the penalty rises to 100% of the tax due. In cases involving tax evasion exceeding specified thresholds, Section 132 criminal prosecution provisions may also apply, carrying imprisonment of up to five years. Responding to DRC-01C within the seven-day window — even with a partial or interim explanation under option (c) — preserves the opportunity to resolve the matter before it escalates to adjudication.
How Systematic Reconciliation Eliminates DRC-01C Exposure
The pre-filing check that prevents DRC-01C is: does GSTR-3B Table 4 ITC equal GSTR-2B ITC, adjusted only for legitimate categories (imports, opening balance, transitional ITC) that are documented and supportable?
Organisations that run this check before each GSTR-3B filing catch the DRC-01C trigger before the notice is issued. Those that discover the mismatch only after receiving the notice then face the seven-day reply window under time pressure.
Purpose-built GST reconciliation software that runs the GSTR-2B vs GSTR-3B ITC comparison as part of the monthly close workflow — and flags excess ITC claims before filing — converts DRC-01C from a reactive compliance task into a preventable event. For businesses managing multiple GSTINs, import ITC, and complex ITC reversal scenarios, reconciliation software built for India that handles all three ITC streams in a single workflow reduces the coordination effort that manual reconciliation requires.