SOP 6 for ITC.pdf
Standard Operating Procedure No. 6 for Input Tax Credit (ITC)
Department of Posts
(PAF Wing)
STANDARD OPERATING PROCEDURE (“SOP”)
FOR INPUT TAX CREDIT (“ITC”)
INDEX
SL. No. Particulars Page No. 1 Brief Introduction 2
2 Eligibility of ITC in accordance with the GST Law 3-7
⮚ Section 16(1) & 16(2) of the CGST Act, 2017
⮚ Additional Conditions for Availing Input Tax Credit
⮚ Rule 36 – Documentary Requirements and Conditions for
Availing ITC
⮚ Section 38 - Communication of details of inward supplies
and input tax credit
3 Section 17(5) – Blocked Credits: 7-10 4 Place of Supply Rules and ITC Eligibility 10-11 5 ITC on Inputs or Input Services and its reversal: 11-14 6 ITC on Capital Goods and its reversal: 15-18
7 Disposal of Capital Assets – GST Treatment: 19
| 8 | Detailed Summary of the END-TO-END Process for Compliance under the Input Tax Credit Mechanism: | 20-25 |
|---|
Page 1 of 25
1. Brief Introduction:
Input Tax Credit (“ITC”), as envisaged under Sections 16 to 17 of the Central Goods and Services Tax Act, 2017 (“CGST Act”), read in conjunction with the corresponding provisions of the Central Goods and Services Tax Rules, 2017 (“CGST Rules”), constitutes the cornerstone of the GST framework by enabling every registered person, including Department of Posts (“DoP”), to legitimately offset the taxes paid on inward supplies of goods and services to the outward supply of goods or services or both, that are used or intended to be used in the course or furtherance of business, thereby avoiding the cascading and pyramiding effect of indirect taxation that existed in the pre-GST era.
In the context of Department of Posts, where operations span across numerous Circles, Divisions, PAOs, DDOs and functional units functioning under the “One State One GSTIN” framework, the precise, technically compliant, and meticulously documented availment, utilization, reconciliation, and year-end consolidation of ITC assume extraordinary importance, since any error, omission, or non-compliance whether originating from incorrect vendor invoicing, mismatch between books and GSTR-2B, delays in payment, or classification inaccuracies can lead to compulsory reversals, interest liabilities, audit objections, and undue financial burdens upon the Department.
Therefore, this Standard Operating Procedure (“SOP”) seeks to establish an exhaustive, unified, and coherently structured process that explains, in a comprehensive and sequential manner, the method by which ITC must be identified, verified, availed, reconciled, utilized, reversed, reclaimed, reported in monthly and annual GST returns, and preserved in documentary form so that Department of Posts remains fully compliant with the statutory requirements of the GST law while ensuring transparent, accountable, and financially prudent operations across all its units.
Page 2 of 25
2. Eligibility of ITC in accordance with the GST Law
In accordance with the provision of Section 16(1) of the CGST Act, every registered person including DoP shall be entitled to take credit of input tax charged on inward supply of goods or services or both, which are used or intended to be used in the course or furtherance of his business and the said amount shall be credited to the electronic credit ledger of such person.
However, this entitlement is subject to compliance with the conditions prescribed under Section 16(2) of the CGST Act, which include:
⮚ Possession of a valid tax invoice or debit note issued by a registered supplier, or other documents as mentioned in Rule 36 of the CGST Rules.
⮚ Details of the invoice or debit note furnished by the supplier in in Form GSTR-1 or Form GSTR-1A or via Invoice Furnishing Facility (“IFF”) and ITC details communicated to DoP in Form GSTR-2B.
⮚ Receipt of goods or services or both by the Department.
NOTE: DoP shall be deemed to have received goods or services where: Requirement Explanation
(i) Delivery of Goods
Goods are delivered by the supplier to: - The Department, or
- Any other person on the Department’s direction, before or during movement of goods, either by way of transfer of title documents or otherwise.
| (ii) Provision of Services | Services are provided by the supplier to any person on the Department’s direction and in the Department’s account. |
|---|
⮚ ITC has not been restricted under Section 38 of the CGST Act.
Page 3 of 25
⮚ Tax charged on the supply has been actually paid to the Government, either in cash or through utilization of admissible ITC.
⮚ Filing of returns under Section 39 of the CGST Act by the Department.
Additional Conditions for Availing Input Tax Credit
Provision Description
Goods received in lots or instalments
Payment within 180 days
Depreciation on tax component
ITC on goods covered under an invoice can be availed only upon receipt of the last lot or instalment.
If DoP fails to pay the supplier (other than RCM supplies) the value of supply along with tax within 180 days from the invoice date:
- ITC availed shall be reversed along with interest under Section 50 of the CGST Act. - ITC can be reclaimed upon subsequent payment.
Where depreciation is claimed on the tax component of capital goods under the Income-tax Act, 1961, ITC on such tax component shall not be allowed.
| Time limit for availing ITC | ITC cannot be availed on any invoice or debit note after 30th November following the end of the financial year to which it pertains, or furnishing the annual return, whichever is earlier. For instance, ITC pertaining to FY 2025–26 can be claimed up to November 2026, i.e., in Form GSTR-3B for October 2026, which is due on 20th November 2026, provided the annual return has not been filed earlier. |
|---|
Page 4 of 25
However, if Form GSTR-3B for October 2026 is filed after 20th November 2026 but on or before 30th November 2026 (with applicable late fees), ITC is still eligible, provided the annual return has not been filed earlier. |
|---|
Rule 36 – Documentary Requirements and Conditions for Availing ITC
Sub Rule
Provision Description
36(1) Basis for Availment of
ITC
ITC shall be availed by a DoP (including ISD) on the basis of any of the following documents:
(a) Invoice issued by the supplier of goods/services in accordance with Section 31 of the CGST Act. (b) Self-invoice for RCM issued under Section 31(3)(f) of the CGST Act, subject to payment of tax. (c) Debit note issued by the supplier under Section 34 of the CGST Act. (d) Bill of Entry or similar document prescribed under the Customs Act, 1962 for assessment of IGST on imports.
(e) ISD invoice or ISD credit note issued in accordance with Rule 54(1) of the CGST Rules.
36(2) | Mandatory Particulars | ITC can be availed only if the document contains all particulars specified under Chapter VI. Provided that if the document lacks some particulars but includes: - Amount of tax charged |
|---|
Page 5 of 25
36(3) Restriction on Fraudulent Tax
- Description of goods/services
- Total value of supply
- GSTIN of supplier and recipient
- Place of supply (for inter-State supply)
ITC may still be availed.
No ITC shall be availed in respect of tax paid pursuant to any order confirming demand on account of fraud, willful misstatement, or suppression of facts under Section 74 of the CGST Act.
36(4) | Matching Requirement | No ITC shall be availed in respect of invoices or debit notes unless: (a) Details furnished by the supplier in Form GSTR-1 or Form GSTR-1A or via Invoice Furnishing Facility (“IFF”). (b) ITC details communicated to in Form GSTR-2B. |
|---|
Section 38 - Communication of details of inward supplies and input tax credit
Sub
Section
Provision Description
38(1) Availability of Details
The details of outward supplies furnished by registered supplier in Form GSTR-1 or Form GSTR 1A or via Invoice Furnishing Facility (“IFF”), shall be made available electronically to Department in Form GSTR-2B.
| 38(2) | Contents of Statement | Form GSTR-2B shall include: |
|---|
Page 6 of 25
(a) Eligible ITC Details of inward supplies in respect of which ITC may be available to the Department.
| (b) | Ineligible ITC | Details of supplies in respect of which ITC cannot be availed, wholly or partly, including cases where: i. Supplier furnished details period of taking registration. ii. Supplier defaulted in tax payment for a prescribed period. iii. The output tax payable declared by the Supplier exceeds the output tax paid by him during prescribed limits. iv. Supplier availed excess ITC beyond permissible limit. v. Supplier defaulted in discharging liability under Section 49(12) of the CGST Act. vi. Any other prescribed class of persons. |
|---|
3. Section 17(5) – Blocked Credits:
In accordance with Section 17(5) of the CGST Act, 2017, certain categories of ITC are expressly disallowed, irrespective of their use in the course or furtherance of business. Accordingly, for the Department, ITC shall not be available on the following goods and services:
Clause Description Exceptions / Conditions Where ITC is Allowed
| (a) | Motor vehicles for transportation of persons having approved seating capacity ≤ 13 (including driver) | Allowed when used for: (A) Further supply of such motor vehicles (B) Transportation of passengers |
|---|
Page 7 of 25
(C) Imparting training on
driving such motor vehicles
(aa) Vessels and aircraft Allowed when used for:
(i) Further supply of such
vessels or aircraft
(ii) Transportation of
passengers
(iii) Training on navigating
vessels or flying aircraft
(iv) Transportation of goods
(ab) Services of general insurance, servicing, repair & maintenance relating to motor vehicles, vessels or aircraft referred in clause (a) or (aa)
(b)(i) Food & beverages, outdoor catering, beauty treatment, health services, cosmetic & plastic surgery, leasing/renting/hiring of motor vehicles/vessels/aircraft referred in clause (a) or (aa) (except when used for purposes in (a)/(aa)), life insurance & health insurance
Allowed when:
(i) Vehicles/vessels/aircraft used for purposes specified in (a) or (aa)
(ii) Received by manufacturer of such vehicles /vessels/ aircraft (iii) Received by supplier of general insurance services for such vehicles/vessels/aircraft insured by him
Allowed when inward supply is used for making outward taxable supply of same
category or as part of
composite/mixed supply and allowed only if obligatory under any law
| (b)(ii) | Membership of club, health & fitness centre | Allowed only if obligatory under any law |
|---|
Page 8 of 25
(b)(iii) Travel benefits extended to employees on vacation (e.g., leave or home travel concession)
(c) Works contract services for construction of immovable property (other than plant & machinery)
(d) Goods/services received for construction of immovable property (other than plant & machinery)
(e) Goods/Services on which tax paid under Section 10 of the CGST Act (Composition Scheme)
(f) Goods/services received by non resident taxable person (“NRTP”) (except goods imported)
(fa) Goods/services used for Corporate Social Responsibility (“CSR”) obligations under Companies Act, 2013
(g) Goods/services used for personal consumption
(h) Goods lost, stolen, destroyed, written off, or disposed of by way of gift or free samples
Allowed only if obligatory under any law
Allowed only when used for further supply of works
contract service
Not allowed even if used in course or furtherance of business
No exceptions
No exceptions
No exceptions
No exceptions
No exceptions
| (i) | Tax paid under Section 74 (fraud, misstatement, suppression) | No exceptions |
|---|
Explanation 1 – Construction
For clauses (c) and (d), “construction” includes reconstruction, renovation, additions, alterations, or repairs, to the extent of capitalization in books of accounts.
Page 9 of 25
Explanation 2 – Plant and Machinery
“Plant and machinery” means apparatus, equipment, and machinery fixed to earth by foundation or structural support used for making outward supply of goods/services and includes such foundation and structural supports but excludes:
● Land, building, or civil structures
● Telecommunication towers
● Pipelines laid outside factory premises
4. Place of Supply Rules and ITC Eligibility:
Aspect Explanation
Principle ITC eligibility must be determined based on Place of Supply (“POS”) provisions under Section 12 of the IGST Act, 2017.
Key Rule If the Location of Supplier (“LOS”) and Place of Supply (“POS”) are in the same State, but the Location of Recipient (“LOR”)
is in a different State, ITC on that invoice is not available.
Reason CGST and SGST are State-specific taxes. If the recipient is not registered in the State where POS occurs, ITC cannot be
availed.
| Example | A DoP employee from Chennai (Tamil Nadu) travels to Mumbai (Maharashtra) for official work. The hotel in Mumbai issues an invoice addressed to the Chennai office and charges CGST + SGST, since POS in that case is location of immovable property or location of hotel i.e., Maharashtra. ⮚ The service (hotel accommodation) is performed and consumed in Maharashtra. ⮚ GST law mandates CGST/SGST for intra-State supply, even if the recipient’s address is in another State. As the LOS and POS both are in Maharashtra. |
|---|
Page 10 of 25
⮚ The invoice will appear in GSTR-2B but marked as
“Ineligible – POS different from Recipient State”.
Impact ITC cannot be claimed for such expenses, even if incurred for business purposes, because the recipient is not registered in the State where POS occurs.
Applicable Scenarios
Hotel accommodation, exhibitions, events, training sessions, seminars, conferences etc., where services are performed and consumed at a specific location.
| Compliance Solution | To avail ITC, the Department must quote the GSTIN of the State where the service is consumed (e.g., Maharashtra GSTIN for Mumbai hotel stay). This ensures POS aligns with recipient registration, making ITC eligible. |
|---|
5. ITC on Inputs or Input Services and its reversal:
As per Section 16 of the CGST Act, 2017, DoP is entitled to claim ITC on all the inputs or input services procured for use in the course or furtherance of business.
However, in accordance Section 17(1) and 17(2) of the CGST Act, 2017, where input and input services are partly used for business and partly for non-business purposes, or partly for taxable (including zero-rated) supplies and partly for exempt supplies, the ITC shall be attributed and reversed as per Rule 42 of the CGST Rules, 2017 using the following formula:
i. ITC Attribution and Reversal Formula
Let:
● T = Total ITC on inputs and input services in a tax period
● T1 = ITC exclusively for non-business use
● T2 = ITC exclusively for exempt supplies
● T3 = ITC not available under Section 17(5)
Page 11 of 25
● C1 = ITC credited to electronic credit ledger = T−(T1+T2+T3) ● T4 = ITC exclusively for taxable or zero-rated supplies (exclusive use) ● C2 = Common credit = C1−T4
● D1 = ITC attributable to exempt supplies = (E/F)×C2
● D2 = ITC attributable to non-business use = 5% of C2
● C3 = Eligible ITC = C2−(D1+D2)
Where:
⮚ E = Aggregate value of exempt supplies during the tax period ⮚ F = Total turnover in the State during the tax period
Note: If turnover data is unavailable for the current month, use the last available tax period’s data.
ii. Definition of “Turnover in State/UT” (Section 2(112), CGST Act)
“Turnover in State” or “Turnover in Union Territory” means the aggregate value of:
● Taxable supplies (excluding inward supplies under RCM)
● Exempt supplies
● Exports of goods/services
● Inter-State supplies made from the State/UT
Excludes:
Central tax, State tax, UT tax, Integrated tax, and Cess
iii. Clarification for Exempt Turnover
The value of exempt supply shall include:
Page 12 of 25
⮚ Supplies on which the recipient is liable to pay tax under reverse charge
⮚ Transactions in securities
⮚ Sale of land and building
Exempt supply shall not include:
⮚ Activities or transactions specified in Schedule III (except sale of land/building and supply of warehoused goods before clearance for home consumption)
⮚ Services related to accepting deposits, extending loans or advances where consideration is interest or discount
⮚ Supply of Duty Credit Scrips (Notification No. 35/2017-Central Tax (Rate), dated 13th October 2017)
iv. Reporting and Compliance
Component Reporting Form Remarks
T1, T2, T3, T4 Form GSTR-3B Declared at summary level
D1, D2, C3 Form GSTR-3B or GST DRC-03
Computed separately for CGST, SGST, UTGST, IGST
| Reversal Amount (D1 + D2) | Reversed by DoP in Form GSTR-3B or through Form GST DRC-03 | On a monthly basis |
|---|
v. Illustration
Consider the following scenario for the month of December 2022 in relation to supplies made in Delhi Office:
⮚ Total ITC available (T): ₹1,50,000
⮚ ITC on inputs used for personal use (T1): ₹7,500
⮚ ITC on inputs used exclusively for exempt supplies (T2): ₹18,000 ⮚ Blocked credits under Section 17(5) (T3): ₹4,000
⮚ ITC on inputs used exclusively for taxable supplies (T4): ₹1,00,000
Page 13 of 25
⮚ Aggregate value of exempt supplies (E): ₹3,00,000 ⮚ Total turnover in Delhi Office (F): ₹30,00,000
Step-by-Step Computation:
i. Eligible Common Credit (C1):
C1=T−(T1+T2+T3)
C1=₹1,50,000−(₹7,500+₹18,000+₹4,000) = ₹1,20,500
ii. Common Credit (C2):
C2=C1−T4
C2=₹1,20,500−₹1,00,000 = ₹20,500
iii. Credit Attributable to Exempt Supplies (D1): D1=(EF)×C2
D1=(₹3,00,000/₹30,00,000)×₹20,500 = ₹2,050
iv. Credit to be Reversed as per Rule 42 (D2): D2=5% of C2
C2=5% of ₹20,500=₹1,025
v. Net Common Credit Eligible (C3):
C3=C2−(D1+D2)
C3=₹20,500−(₹2,050+₹1,025) = ₹17,425
Final ITC Credited to Electronic Credit Ledger: ● Exclusive Taxable Supply Credit (T4): ₹1,00,000 ● Net Common Credit (C3): ₹17,425
● Total Credited: ₹1,17,425
Reversals Required:
● Credit attributable to exempt supplies (D1): ₹2,050 ● Credit reversal under Rule 42 (D2): ₹1,025
Page 14 of 25
6. ITC on Capital Goods and its reversal:
As per Section 16 of the CGST Act, 2017, DoP is entitled to claim ITC on capital goods procured for use in the course or furtherance of business.
However, in accordance Section 17(1) and 17(2) of the CGST Act, 2017, where capital goods are partly used for business and partly for non-business purposes, or partly for taxable (including zero-rated) supplies and partly for exempt supplies, the ITC shall be attributed and reversed as per Rule 43 of the CGST Rules, 2017 using the following formula:
I. ITC Eligibility Scenarios
Usage Type ITC Eligibility Action Required
Exclusively for exempt supplies
Exclusively for
taxable/zero-rated supplies
Not eligible Do not avail ITC Fully eligible Avail full ITC
| Common use for both taxable and exempt supplies | Partially eligible | Avail full ITC initially, then reverse proportionate amount monthly |
|---|
II. Reversal Formula for Common Capital Goods
Let:
● A = Total ITC as per invoice (credited to electronic credit ledger) ● Tc = Amount of ‘A’ credited to ledger
● Useful life = 60 months (5 years)
● Tm = Monthly ITC attributable = Tc/60
● Te = Monthly ITC attributable to exempt supplies = (E/F)xTm Where:
⮚ E = Value of exempt supplies during the tax period
Page 15 of 25
⮚ F = Total turnover in the State during the tax period
Note: If turnover data is not available for the current month, use the last available tax period’s data.
III. Definition of “Turnover in State/UT” (Section 2(112), CGST Act)
“Turnover in State” or “Turnover in Union Territory” means the aggregate value of:
● Taxable supplies (excluding inward supplies under RCM) ● Exempt supplies
● Exports of goods/services
● Inter-State supplies made from the State/UT
Excludes:
● Central tax, State tax, UT tax, Integrated tax, and Cess
IV. Clarification for Exempt Turnover
The value of exempt supply shall include:
⮚ Supplies on which the recipient is liable to pay tax under reverse charge
⮚ Transactions in securities
⮚ Sale of land and building
Exempt supply shall not include:
⮚ Activities or transactions specified in Schedule III (except sale of land/building and supply of warehoused goods before clearance for home consumption)
⮚ Services related to accepting deposits, extending loans or advances where consideration is interest or discount
⮚ Supply of Duty Credit Scrips (Notification No. 35/2017-Central Tax (Rate), dated 13th October 2017)
Page 16 of 25
V. Monthly Compliance
● Te (ITC attributable to exempt supplies) must be added to output tax liability every month.
● Interest may apply if reversal is delayed.
VI. Special Cases of Transition Between Usage Types Scenario Action Required
Capital goods earlier used exclusively for exempt supplies, now used for common purposes
Credit ‘A’ to ledger, but reverse Tie = 5% per quarter of ineligible period
Capital goods earlier used for taxable supplies, now used for common purposes | Add earlier ITC to Tc and apply Rule 43 formula going forward |
|---|
Note: Tie must be calculated separately for CGST, SGST, UTGST, and IGST, and reported in Form GSTR-3B.
VII. Illustration
DoP’s Haryana Office acquired various capital goods in July 2025, with the following ITC details:
Capital Goods and ITC Allocation:
Machine Usage Description ITC Amount (₹)
Credited to Electronic
Ledger?
| Machine M | Used exclusively for exempt supplies | ₹1,50,000 | Not credited |
|---|
Page 17 of 25
Machine N Used exclusively for taxable supplies
Machine O Used exclusively for non-business purposes
₹9,00,000 Credited ₹20,000 Not credited
| Machine P | Used partly for taxable and exempt supplies | ₹4,50,000 | Credited (subject to reversal) |
|---|
Output Supplies in July 2025:
● Turnover from exempt supplies (E): ₹20,00,000
● Turnover from taxable supplies (F): ₹80,00,000
Step-by-Step Computation:
i. ITC not credited to electronic ledger:
● Machine M + Machine O = ₹1,50,000 + ₹20,000 = ₹1,70,000 ii. ITC credited to electronic ledger:
● Machine N = ₹9,00,000
● Machine P = ₹4,50,000
iii. Monthly ITC reversal on Machine P:
● Tc (Total ITC on Machine P) = ₹4,50,000
● Tm (Monthly ITC) = Tc ÷ 60
Tm = ₹4,50,000 ÷ 60 months = ₹7,500
● ITC to be reversed for July 2025 (Te) = (E÷F) x Tm
Te = (Rs. 20,00,000 ÷ Rs. 80,00,000) × Rs. 7,500 = Rs. 1,875
Summary:
● Total ITC credited to electronic ledger (July 2025): ₹9,00,000 (Machine N) + ₹4,50,000 (Machine P) = ₹13,50,000
● ITC reversed for July 2025: ₹1,875
Page 18 of 25
7. Disposal of Capital Assets – GST Treatment:
Section 18(6), CGST Act, 2017: When capital goods or plant and machinery on which ITC has been availed are disposed off, the registered person must pay:
Higher of:
⮚ ITC attributable to remaining useful life, or
⮚ GST on transaction value (as per Section 15)
Rule 44, CGST Rules, 2017: Prescribes the method for computing ITC attributable to remaining useful life.
a) Calculation Method
Illustration:
● Useful life = 5 years or 60 months
● Capital goods used for 4 years, 6 months, 15 days → Remaining life = 5 months (ignore part of month)
● ITC taken on capital goods = C
Formula:
● ITC attributable to remaining life = C×5/60
● Compare this with GST on transaction value (as per Section 15) ● Pay the higher amount as output tax liability.
● Report in Form GSTR-1.
b) Special Case – Scrap Disposal
Refractory bricks, moulds and dies, jigs and fixtures supplied as scrap:
● GST is payable only on the transaction value (as per Section 15) ● No need to compute ITC reversal.
Page 19 of 25
8. Detailed Summary of the END-TO-END Process for Compliance under the Input Tax Credit Mechanism:
A. Identification of ITC Eligibility at the Time of Receipt of Inward Supply
The Drawing and Disbursing Officer (“DDO”) must, at the time of receipt of every inward supply of goods or services or both, undertake a detailed and substantive assessment of the nature, purpose, end-use, and contractual or operational characteristics of the supply in order to determine whether such supply satisfies the statutory conditions prescribed under Section 16 of the CGST Act, which requires, among other things, that the recipient must be in possession of a valid tax invoice issued by a registered supplier, that the goods or services have indeed been received, that the tax charged on such supply has been actually paid to the Government by the supplier through his GSTR-3B filing, and that the recipient himself has furnished his own GST returns for the relevant period.
Furthermore, the DDO must also ensure that the supply does not fall within any category enumerated under Section 17(5) of the CGST Act, commonly referred to as “blocked credits,” which include, among other items, motor vehicles meant for transportation of persons (except in limited circumstances), goods and services used for personal consumption, membership of clubs or health facilities, works contract services not used for further supply of works contract services, goods destroyed or disposed of by way of gifts or free samples, and several other exclusions that the law explicitly prohibits from being claimed as ITC, such that any inadvertent or erroneous inclusion of such supplies in the ITC ledger may otherwise result in mandatory reversals, penal consequences, or adverse audit findings.
B. Ensuring Accurate Communication and Verification of the Correct GSTIN on Vendor Invoices
The DDO must ensure, prior to procurement and certainly before receipt of the invoice, that the correct State-specific GSTIN of Department of Posts is formally
Page 20 of 25
communicated to the vendor, and the vendor is explicitly instructed to issue all invoices, credit notes, debit notes, delivery challans, and related documents strictly in the correct legal name and GSTIN of the Department, since any deviation or error in this regard such as the use of an incorrect GSTIN, incorrect place of supply, or mismatched details would legally impair the Department’s ability to claim ITC, given that the GST portal automatically rejects credits that do not align with the recipient’s correct GSTIN.
Accordingly, every invoice must be verified by the receiving unit to ensure that it contains the mandatory particulars prescribed under Rule 46 of the CGST Rules, including but not limited to the proper GSTIN of the supplier and the recipient, the invoice number and date, the place of supply, the HSN or SAC code, the taxable value, the applicable tax components (CGST, SGST or IGST), and the total invoice value, so that the invoice stands legally valid and capable of being reflected in GSTR-2B, thereby enabling the Department to legitimately avail ITC without any future disputes or reversals.
C. Comprehensive Vendor Compliance Verification Prior to Availment of ITC
Before any Input Tax Credit is availed, the Accounts Wing of PAO must undertake a thorough and systematic examination to verify that the vendor has fulfilled his statutory obligations by filing his GSTR-1 for the relevant tax period and correctly uploading all invoice details, such that the said invoices appear in the Department’s auto-generated GSTR-2B, which is the legally recognized and final document for determining the ITC that can be claimed in a given month.
The PAO must also ensure that the vendor has discharged the tax liability through his GSTR-3B, because Section 16(2)(c) of the CGST Act unequivocally stipulates that ITC shall be allowed only when the tax charged in respect of the supply has been actually paid to the Government. Consequently, if any invoice fails to appear in GSTR-2B, is delayed by the vendor due to non-filing of GSTR
1, or is incorrectly uploaded with errors in GSTIN, tax amount, HSN code, or
Page 21 of 25
place of supply, the PAO must withhold the availment of ITC for such invoices until such time as the vendor rectifies the discrepancy, since availing ITC on non compliant invoices exposes the Department to mandatory reversals with interest.
D. Availment of ITC in the Books of Accounts in Strict Conformity with GSTR 2B
The Accounts Wing of PAO must avail ITC strictly on the basis of the invoices reflected in the monthly GSTR-2B, and no invoice shall be considered for ITC unless it appears in that month’s 2B statement, irrespective of whether the invoice is physically available, entered in the purchase register, or received within the accounting period, because the GST law treats GSTR-2B as the definitive source of eligible ITC for each tax period.
Furthermore, the PAO must maintain separate and clearly distinguishable ledger classifications for eligible ITC, ineligible ITC, ITC reversals, reclaimed ITC, blocked credits, and disputed credits, ensuring that the ledger reflects the true and legally compliant status of each credit entry, and must also retain, in both physical and digital formats, all supporting documents including vendor invoices, approval notes, payment advice, work completion certificates, debit or credit notes, and internal authorizations to ensure audit-readiness and legal sufficiency at all times.
E. Mandatory Reversal of ITC Under Rule 37, Rule 42, Rule 43 and Section 17(5)
The Department must reverse ITC in all circumstances prescribed under law, including situations where payment to the vendor is not completed within 180 days, where inputs or input services are used partly for business and partly for other purposes, where the supply is used partly for taxable and partly for exempt activities, where goods are lost or destroyed, or where the supply is subsequently determined to fall under any of the categories of blocked credits under Section 17(5) of the CGST Act.
Page 22 of 25
These reversals must be made promptly in the month in which the event triggering reversal occurs, and they must be reflected accurately in Table 4B of GSTR-3B, accompanied by the computation sheets, internal notes, reconciliation summaries, and approval records, so that the Department is able to demonstrate full legal compliance in the event of internal, statutory, or CAG audits, and so that there is no accumulation of unadjusted mismatches that could complicate future reconciliations.
F. Reclaiming Reversed ITC Upon Fulfilment of Statutory Conditions
Any ITC that has been reversed due to temporary non-fulfilment of conditions such as delays in vendor uploading, delayed payment to the supplier, or temporary classification disputes must be reclaimed only when the original condition giving rise to reversal has been fully satisfied, and such reclamation must be properly documented and declared in Table 4D(1) of GSTR-3B so that the Department maintains a transparent audit trail reflecting when ITC was reversed, how long it remained reversed, and under what circumstances it was reclaimed.
G. Utilization of ITC in the Statutorily Mandated Order Prescribed Under Section 49(5)
The Department must utilize the Input Tax Credit in compliance with the legally binding sequence prescribed in Section 49(5), which requires that IGST credit be exhausted first towards IGST, then CGST, and then SGST/UTGST liabilities. The CGST credit be utilized next for CGST and thereafter for IGST but never for SGST/UTGST and that SGST/UTGST credit be used for SGST/UTGST and thereafter for IGST but never for CGST, ensuring that the Department remains fully compliant with the credit utilization hierarchy built into the GST law and embedded into the GSTN system.
H. Monthly ITC Reconciliation Between Books, GSTR-2B, and GSTR-3B
Every month, the PAO must conduct a meticulous and comprehensive three-way reconciliation between (a) the purchase register maintained in the books of accounts, (b) the auto-drafted Input Tax Credit reflected in GSTR-2B, and (c) the
Page 23 of 25
ITC actually availed in GSTR-3B, so that any discrepancies arising from vendor non-compliance, invoice mismatch, tax rate errors, duplicate entries, or internal data-entry mistakes are promptly identified, categorized, communicated, and resolved.
The reconciliation process must be supported by discrepancy registers, vendor follow-up reports, mismatch classifications, internal notes, and rectification trackers so that the Department maintains complete transparency and procedural rigor in the management of ITC credits.
I. Filing of Monthly GST Return (Form GSTR-3B) Reflecting Accurate ITC Data
The PAO must ensure that all eligible ITC (as per GSTR-2B), all reversals (as per Rule 37, 42, 43, and blocked credit provisions), all reclaims, and all ineligible credits are accurately reflected in the appropriate tables of GSTR-3B, particularly Tables 4A, 4B, 4C, and 4D, and that the filing is completed strictly within the statutory timelines so that the Department avoids interest, penalties, and the suspension of GSTIN due to non-compliance.
J. Annual ITC Reconciliation and Reporting in GSTR-9 and GSTR-9C
At the end of each financial year, the PAO must perform a consolidated and highly detailed reconciliation of all ITC claimed from April to March, comparing the books of accounts with GSTR-2B, GSTR-3B, and the financial statements to prepare the data for annual return i.e., GSTR-9 and reconciliation statement i.e., GSTR-9C, ensuring that all mismatches, pending reversals, missed credits, blocked credits, and classification issues are comprehensively addressed and documented, so that the annual returns present a complete, accurate, and legally compliant summary of the Department’s ITC activity.
K. Record Retention and Documentation Requirements
The Department must maintain all ITC-related records including invoices, ledgers, reconciliation statements, correspondence with vendors, payment evidence, approval notes, and internal working sheets for a period of 72 months from the due date of filing the annual return for the relevant financial year, so that these documents remain available for scrutiny by statutory auditors, internal auditors, GST authorities, or other oversight bodies.
Page 24 of 25
L. Internal Controls, Monitoring Mechanisms, and Compliance Oversight
The Department must implement a robust, perpetual, and multi-layered internal control mechanism that ensures monthly verification of vendor compliance, correctness of GSTIN usage, accuracy of invoice details, completeness of GSTR 2B matching, timeliness of reversals and reclaims, consistency of classification between eligible and ineligible credits, and overall adherence to the statutory provisions governing ITC, thereby ensuring that Department of Posts remains fully compliant with GST requirements across all operational units and jurisdictions.
Page 25 of 25