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GST DRC-01B Notice: GSTR-1 vs GSTR-3B Liability Mismatch

Last reviewed: March 2025 · Sourced from official government portals

01

WHAT IS DRC-01B AND WHY DOES IT EXIST

From 2022-23 onwards, the GST system automatically compares your GSTR-1 (invoice-level outward supply details) with your GSTR-3B (self-assessed tax payment summary) for every month. If the taxable value or tax liability in GSTR-3B is less than what you declared in GSTR-1, the system automatically generates a DRC-01B intimation.

This is a system-generated notice - no human officer has specifically reviewed your case. But it still demands a response and carries real consequences if ignored.

Source: Rule 88C, CGST Rules 2017, inserted by Notification 26/2022-CT dated 26.12.2022.

02

THE MOST COMMON REASONS FOR A DRC-01B

The mismatch is almost always one of these:

  • Tax paid through DRC-03: You realised you had underpaid tax in a prior period and made a voluntary payment through DRC-03 (voluntary tax payment challan) but the GSTR-3B still reflects the original lower figure. This is legitimate but needs to be declared in DRC-01B Part B.
  • Timing difference: You raised invoices in GSTR-1 for advance received but the actual tax was paid in the next month's GSTR-3B. Common in construction and real estate.
  • Credit notes issued: You issued credit notes in a later period that reduced your actual liability from what GSTR-1 showed for the current period. This is not always reflected correctly in the system comparison.
  • Amendment in GSTR-1: You amended invoices in a subsequent month but the original period's comparison is being flagged.
  • Genuine underpayment: You made a mistake in GSTR-3B and actually did pay less tax than you were supposed to. In this case, you should pay the shortfall.
  • Nil-rated, exempted, or non-GST supplies declared in GSTR-1 but not in GSTR-3B: These categories can create apparent mismatches that are not actual tax dues.
03

THE TWO-PART RESPONSE STRUCTURE

DRC-01B has two parts and your response determines which path you go down.

  • DRC-01B Part A: This is the intimation the system sends you. It shows the specific period, the GSTR-1 declared liability, the GSTR-3B declared liability, and the difference.
  • DRC-01B Part B: This is where you reply. You must file Part B within 7 days of the Part A intimation.
  • In Part B, you select one of two responses: (a) "The difference is due to the following reasons" - you explain and provide details, or (b) "I am making payment of the difference" - you pay the shortfall.
  • If you select the explanation route, you must provide specific reasons. Vague reasons like "due to accounting treatment" are not sufficient - you need the specific transaction details.
04

WHAT HAPPENS AFTER YOUR PART B RESPONSE

The outcome depends on whether the officer accepts your explanation.

  • If your explanation is accepted: The matter closes here. No further action.
  • If your explanation is not accepted or you do not respond: The system/officer can initiate proceedings under Section 73 or 74 and issue a DRC-01. At that stage, the mismatch becomes a formal demand with penalties.
  • If you pay the shortfall: Part B closed with payment challan number. The matter closes for that period.
  • If the same mismatch recurs across multiple months: The officer may decide to initiate a comprehensive scrutiny or audit rather than handling them individually.

A DRC-01B is significantly easier and cheaper to resolve than a DRC-01. The incentive to resolve it here is strong.

05

HOW TO PREPARE YOUR PART B RESPONSE

A proper Part B response should include:

  • A clear statement of the reason for the mismatch with the specific transaction or period it relates to
  • DRC-03 challan details if the difference was paid voluntarily in a different period
  • A reconciliation table showing: GSTR-1 declared value, credit notes issued, amendments, advances adjusted, and the net taxable value matching GSTR-3B
  • Copies of relevant invoices, credit notes, or amendment records as supporting documents
  • If there was a genuine error, the payment of shortfall with interest under Section 50 (18% per annum from the original due date)
FAQ

Frequently Asked Questions

I received DRC-01B for a mismatch but I already paid the difference via DRC-03 voluntarily. What do I do?

This is exactly the right path. In your Part B response, select the explanation option, state that the difference was paid voluntarily through DRC-03, and provide the DRC-03 challan number and date. The system will verify this and close the matter.

The DRC-01B mismatch is just Rs. 500. Is it worth worrying about?

Yes. The amount does not determine whether the notice escalates. A non-response to DRC-01B can initiate formal DRC-01 proceedings regardless of the amount. Respond to every DRC-01B - even for small amounts.

I received DRC-01B notices for 6 different months simultaneously. Do I respond to each separately?

Yes, each DRC-01B is for a specific month and must be responded to individually in its own Part B. The reasons may be the same across months - in that case, your responses will be similar - but each Part B must be filed.

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