GSTR-2B Reconciliation & ITC Review Services

GSTR-2B Reconciliation & ITC Review is the core monthly control under Indian GST by which a taxpayer verifies that every rupee of input tax credit (ITC) claimed in GSTR-3B is backed by an eligible invoice appearing in the static, period-locked GSTR-2B statement. Under Section 16(2)(aa) of the CGST Act, 2017 and Rule 36(4) of the CGST Rules, a recipient can only claim ITC that is "communicated" to them through GSTR-2B — making 2B the single legal foundation of current-month ITC claims, not 2A, not books, not vendor invoices alone.

The review is equally critical on the quality side. Even when an invoice appears in 2B, ITC may still be ineligible under Section 17(5) (blocked credits like motor vehicles, personal consumption, CSR expenditure, food & beverages), restricted under Rule 42 / 43 (common credit apportionment between taxable and exempt supplies), or reversible under Rule 37 (non-payment to vendor within 180 days) and Rule 37A (vendor not paying GSTR-3B tax). An unreviewed ITC claim is therefore not just a reconciliation issue — it is a legal exposure that can surface in DRC-01C (Rule 88D) mismatch notices, scrutiny under Section 61, and full-blown demand proceedings under Sections 73 / 74.

We offer end-to-end GSTR-2B Reconciliation & ITC Review Services — from automated download of GSTR-2B from the GST portal, invoice-level matching with the purchase register, eligibility review under Section 17(5) and Rule 42 / 43, Rule 37 / 37A tracking, decision on ITC to claim / defer / reverse each month, DRC-01C defence, reclaim of past ITC within the Section 16(4) window, and year-end Table 8 build-up for GSTR-9 — so every eligible credit is captured, every ineligible credit is clearly isolated, and your ITC position is fully audit-ready month after month.

14th
2B generation, every month
Sec 16(2)(aa)
ITC conditional on 2B
Rule 36(4)
ITC only up to 2B
30 Nov
Cut-off for ITC claim
Laws & Frameworks We Work Under
CGST Act – Sec 16
CGST Act – Sec 17(5)
CGST Rules – Rule 36(4)
CGST Rules – Rule 37 / 37A
CGST Rules – Rule 42 / 43
CGST Rules – Rule 88C / 88D
Form GSTR-2B
Form DRC-01B / 01C

Two Pillars of a Complete ITC Review

Reconciliation

GSTR-2B Reconciliation

Invoice-level matching of GSTR-2B with the purchase register to confirm whether ITC is claimable at all.

  • Invoice-level matching
  • Missing & extra invoices
  • Value / tax differences
  • GSTIN & place of supply
  • CN / DN mapping
  • Claimable vs deferred ITC
Quality

ITC Eligibility & Quality Review

Legal review of each invoice for eligibility — even when present in 2B, credit may be blocked or restricted.

  • Section 17(5) blocked credits
  • Rule 42 / 43 apportionment
  • Rule 37 (180-day payment)
  • Rule 37A (vendor default)
  • Capital goods vs input split
  • RCM & self-invoice review

Sections of GSTR-2B We Review

Part A I

ITC Available – Inward

B2B invoices from regular suppliers eligible for ITC, auto-populated from suppliers' GSTR-1 / IFF.

B2B Regular
Part A II

Amendments to Invoices

Amendments made by suppliers to earlier B2B invoices, now reflected in the current period's 2B.

Amendments Table 9
Part A III

Debit Notes

Debit notes issued by suppliers that increase ITC available to the recipient for the period.

DN Increase
Part A IV

ISD Distribution

ITC distributed by Input Service Distributors through GSTR-6 — allocated to receiving GSTINs.

ISD GSTR-6
Part B

ITC NOT Available

Invoices where ITC is not available — time-barred, blocked, or from other ineligible sources.

Blocked Time-Barred
Part C

Reversal Section

Invoices and CNs from suppliers under Rule 37A or cancelled / default cases requiring ITC reversal.

Rule 37A Reversal

What Our 2B & ITC Review Engagement Covers

Match

Matching & Gap Analysis

Structured invoice-level matching between 2B, purchase register, and books of accounts.

  • GSTIN-wise matching
  • Invoice number / date match
  • Value & tax variance flags
  • Missing in 2B report
  • Extra in 2B investigation
  • Duplicate claim detection
Eligibility

Legal ITC Eligibility Review

Issue-level review of every high-value credit against Section 16, 17(5), and Rule 42 / 43 tests.

  • Section 17(5) blocked credits
  • Personal / CSR consumption
  • Common credit reversal
  • Capital goods eligibility
  • RCM invoice review
  • Import BOE matching
Monthly

Monthly ITC Decision

Clear monthly decisions on ITC to claim, defer, reverse, or re-avail — backed by documentation.

  • Net claimable ITC working
  • Reversal schedule
  • Deferred ITC tracker
  • Re-avail working (Rule 37)
  • Vendor follow-up letters
  • Audit-ready working papers

Our GSTR-2B & ITC Review Services

01

Monthly 2B Reconciliation

End-to-end monthly 2B vs purchase register reconciliation before GSTR-3B filing cut-off.

02

Section 17(5) Review

Legal review of blocked credits — motor vehicles, food, CSR, employee welfare, personal consumption.

03

Rule 42 / 43 Apportionment

Computation of common credit reversal for businesses with taxable and exempt supplies.

04

Rule 37 180-Day Tracker

Tracking payment to vendors within 180 days to prevent Rule 37 ITC reversal with interest.

05

Rule 37A Vendor Default

Monitoring vendor GSTR-3B filing status to identify ITC exposure under Rule 37A.

06

Vendor-Wise MIS

Dashboards showing defaulting vendors, ITC at risk, and suggested follow-up actions.

07

DRC-01C & 88D Defence

Drafting replies to Rule 88D (DRC-01C) notices on GSTR-2B vs 3B ITC mismatches.

08

Annual Table 8 & 9C Support

Year-end Table 8 reconciliation for GSTR-9 and alignment with GSTR-9C on ITC disclosures.

High-Risk ITC Areas We Target

Motor Vehicles & Insurance

ITC on motor vehicles, their repairs, insurance, and leasing — heavily restricted under Sec 17(5).

Food, Catering & Outdoor Events

Food, beverages, outdoor catering, and club membership — generally blocked for ITC.

Works Contracts & Civil

Works contract and construction services for immovable property — often ineligible.

CSR Expenditure

Goods and services used for CSR activities where ITC is specifically restricted.

Employee Welfare

Gifts, rewards, medical insurance, personal benefits to employees — fact-specific ITC restrictions.

Exempt & Non-Business Use

Common credit used for taxable, exempt, and non-business purposes — Rule 42 / 43 apportionment.

RCM & Import of Services

RCM on legal, GTA, import of services — common ITC errors and timing mismatches.

Import of Goods (BOE)

Matching IGST paid on Bill of Entry with ICEGATE data and GSTR-2B import tables.

Businesses That Need Strong ITC Review

Industry

Large Manufacturers

Factories with high input, capital goods, and services consumption needing tight credit control.

Inputs CapEx
Trading

Distributors & Traders

High-volume trading businesses with large vendor base and quick ITC turnover.

Volume Vendors
Services

IT, ITES & Consulting

Service exporters using LUT / refund route where ITC quality directly drives refund amount.

Exports LUT
EPC

Construction & EPC

Works contract businesses with complex input mix and heavy Sec 17(5) restrictions.

EPC WCT
E-commerce

E-Commerce & Marketplaces

Aggregators and marketplace sellers with multi-state GSTINs and platform-based input flows.

E-Com Multi-State
Finance

BFSI & NBFCs

Banks, NBFCs, and insurers with largely exempt outward supplies and heavy Rule 42 / 43 impact.

BFSI Rule 42
Realty

Real Estate & Hospitality

Builders, hotels, and chains navigating special ITC restrictions and blocked credit rules.

RERA Hospitality
Pharma

Pharma & FMCG

Sector with heavy R&D, promotional spend, free samples, and CSR ITC considerations.

Promo Samples

Information & Data Needed for the Review

Portal & Return Data

  • GSTR-2B for the period
  • GSTR-2A for the period
  • GSTR-1 / 3B filed
  • ITC & cash ledger
  • Prior DRC-01C / 88D notices
  • ICEGATE BOE details
  • GSTIN / portal access

Books & Register Data

  • Purchase register (invoice level)
  • Vendor master with GSTIN
  • ITC register / journal
  • Capital goods register & WDV
  • Ineligible ITC list
  • Common credit turnover data
  • CN / DN register

Policy & Supporting

  • Revenue split (tax / exempt)
  • CSR policy & spend
  • Employee welfare policies
  • Import / RCM self-invoices
  • Long contracts / high-value POs
  • Vendor payment ageing
  • Prior working papers

Our End-to-End 2B & ITC Review Approach

1

Data Download

Pulling GSTR-2B, ICEGATE, and purchase register data in a structured, match-ready format.

2

Line-Level Match

Matching 2B to purchase register at invoice level and flagging every mismatch bucket.

3

Eligibility Review

Testing each high-value credit against Section 16, 17(5), and Rule 42 / 43 legal filters.

4

Monthly Decision

Finalising ITC to claim, defer, reverse, and document monthly ITC working with explanations.

5

MIS & Follow-up

Sharing monthly MIS, vendor-wise dashboards, and corrective actions for the next cycle.

Why Choose Us for 2B & ITC Review

Sharp Section 17(5) interpretation
Strong Rule 42 / 43 working
Automated high-volume matching
Rule 37 / 37A risk tracking
DRC-01C defence experience
Multi-GSTIN reconciliation
Audit-ready working papers
Protected, not just claimed, ITC

FAQs on GSTR-2B Reconciliation & ITC Review

How is GSTR-2B different from GSTR-2A?
GSTR-2B is a static, period-locked statement of available ITC, auto-generated by the GST portal on the 14th of the month following the relevant tax period. It reflects invoices, CNs, DNs, and ISD credits filed by suppliers within a defined cut-off and categorises each entry as "ITC available" or "ITC not available". GSTR-2A, on the other hand, is a dynamic statement that keeps updating as suppliers file or amend returns, and does not have a fixed cut-off. Legally, Rule 36(4) and Section 16(2)(aa) tie the recipient's monthly ITC claim to GSTR-2B — so while 2A is useful for historical / annual review, 2B is the document on which real-time ITC decisions are made.
Why is 2B reconciliation not enough on its own?
Matching an invoice to 2B only confirms that the portal has accepted the invoice as "available" — it does not automatically mean the ITC is eligible. Several legal filters still apply — Section 17(5) blocks ITC on specific categories like motor vehicles, food, CSR, and personal consumption; Rule 42 / 43 require apportionment where supplies are partly taxable / exempt; Rule 37 requires reversal if the vendor is not paid within 180 days; Rule 37A requires reversal if the vendor has not paid tax through GSTR-3B. A robust ITC review overlays these legal filters on top of the 2B reconciliation so that only genuinely eligible credit is claimed.
What is the impact of Rule 88D and DRC-01C on ITC review?
Rule 88D of the CGST Rules introduces a system-generated mismatch check — where ITC claimed in GSTR-3B exceeds the ITC available as per GSTR-2B by a prescribed threshold, the system issues an intimation in Form DRC-01C asking the taxpayer to either pay the differential with interest or explain the mismatch. If the reply is not satisfactory, the officer may proceed under Sections 73 / 74. Monthly 2B reconciliation, combined with a strong ITC review working paper, is the most effective way to pre-empt DRC-01C notices — and where notices do arrive, those working papers become the primary defence.
What happens if we do not pay a vendor within 180 days?
Rule 37 of the CGST Rules requires the recipient to reverse ITC claimed on invoices where payment to the vendor has not been made within 180 days from the date of the invoice, along with interest under Section 50. The reversal is done in GSTR-3B of the month immediately following the 180-day breach. Once payment is finally made, the recipient can re-avail the ITC without any time-bar. Our workflow maintains a continuous 180-day payment tracker at the vendor / invoice level so that every potential reversal is surfaced well in advance — giving the business a chance to pay or plan a controlled reversal.
What kind of credits are commonly blocked under Section 17(5)?
Section 17(5) of the CGST Act lists specific categories where ITC is not allowed even if the underlying supply is otherwise eligible — including motor vehicles used for personal purposes (with limited exceptions), food and beverages, outdoor catering, beauty treatment, health services, club / fitness memberships, rent-a-cab, life and health insurance for employees, works contract and construction services for immovable property (except plant and machinery), CSR expenditure, and goods / services used for personal consumption. Each of these has nuances, and many large taxpayers lose meaningful ITC by not structuring procurement carefully around these rules.
How do Rule 42 and Rule 43 affect ITC for us?
Rule 42 deals with apportionment of common credit on inputs and input services used partly for taxable (including zero-rated) supplies and partly for exempt or non-business purposes — the ineligible portion has to be reversed every month and finally trued up at year-end. Rule 43 deals similarly with common credit on capital goods, apportioned over the useful life (typically 60 months). For BFSI, real estate, healthcare, and diversified groups with both taxable and exempt lines, Rule 42 / 43 working can run into crores — and small errors can materially distort P&L. We build the working on a monthly basis and reconcile it at year-end.
Can ITC missed in 2B of earlier months be claimed later?
Yes, within the Section 16(4) time limit. ITC of a particular financial year can generally be claimed up to 30 November of the following financial year or the date of filing the annual return, whichever is earlier. During the year, if an eligible invoice shows up in 2B of a subsequent month because the vendor filed late, the ITC is typically claimed in the month it appears in 2B (subject to other conditions being met). Our review workflow tracks these late-appearing invoices separately and ensures no eligible credit slips past the cut-off date unnoticed.
Who should outsource GSTR-2B and ITC review to experts?
The bigger the ITC pool and the more complex the business profile, the more value expert 2B and ITC review adds. Large manufacturers, distributors, e-commerce companies, EPC / construction firms, hotels and chains, real estate developers, BFSI players, and multi-state groups with 5+ GSTINs typically benefit the most — both in terms of protected credit value and in terms of reduced litigation exposure. Smaller businesses with simple input mixes may continue with in-house reviews but often still benefit from an annual independent ITC health-check to catch structural gaps before they become a problem.

Claim the Right ITC, Every Month — Backed by Real Legal Review

Partner with our specialists for end-to-end GSTR-2B Reconciliation & ITC Review Services — matching, Section 17(5), Rule 42 / 43, Rule 37 / 37A, and DRC-01C defence — all under one roof.

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