GST ITC Set-Off & Utilization Calculator
Compute statutory Input Tax Credit (ITC) offset hierarchy, minimize cash payment in GSTR-3B, and track carry-forward balances.
Outward Tax Liability (Output Tax) GSTR-3B Table 3.1
Available ITC (GSTR-2B + Ledger) Table 4(A)
Rule 88A strictly mandates that IGST credit must be 100% exhausted before utilizing CGST or SGST credit.
Total Liability Settled via ITC
Rule 88A Offset Matrix Automatic Optimal Allocation
| Liability Head | Output Tax | Set-Off via ITC | Cash Payable |
|---|---|---|---|
| IGST | ₹60,000 | ₹60,000 | ₹0 |
| CGST | ₹30,000 | ₹30,000 | ₹0 |
| SGST | ₹30,000 | ₹30,000 | ₹0 |
| Total | ₹1,20,000 | ₹1,20,000 | ₹0 |
GST Input Tax Credit (ITC) Utilization Hierarchy Under Rule 88A
To prevent unwarranted cash tax outflows and maintain liquidity for Indian enterprises, the Central Board of Indirect Taxes and Customs (CBIC) enacted Rule 88A of the CGST Rules, 2017 (read with Sections 49, 49A, and 49B of the CGST Act). This rule governs the mandatory statutory order in which Input Tax Credit must be set off against output tax liabilities in monthly GSTR-3B filings.
Step 1: Complete Exhaustion of IGST Credit
Rule 88A mandates that IGST credit must be utilized 100% first:
- First, against Output IGST liability.
- Remaining IGST credit can be utilized towards Output CGST and Output SGST/UTGST in any order and in any proportion chosen by the taxpayer.
Step 2 & 3: CGST & SGST Utilization
Only after IGST credit is fully zeroed out:
- CGST Credit: First against CGST liability, then remaining against IGST. (Never against SGST).
- SGST Credit: First against SGST liability, then remaining against IGST. (Never against CGST).
- Cross-utilization between CGST and SGST is strictly prohibited.
Statutory ITC Set-off Matrix Under Section 49 / Rule 88A
| ITC in Credit Ledger | 1st Priority Set-Off | 2nd Priority Set-Off | 3rd Priority Set-Off | Prohibited Cross Set-Off |
|---|---|---|---|---|
| IGST Credit | Output IGST (100%) | Output CGST (Any %) | Output SGST (Any %) | None (Universal) |
| CGST Credit | Output CGST | Output IGST | N/A | Cannot set-off against SGST |
| SGST Credit | Output SGST | Output IGST | N/A | Cannot set-off against CGST |
Frequently Asked Questions on ITC Utilization
Why does GST portal require 100% IGST credit exhaustion first?
Section 49A inserted by the CGST (Amendment) Act mandates that no taxpayer can utilize CGST or SGST credit until the entire credit balance available in IGST is exhausted. Rule 88A provides relief by allowing taxpayers to distribute excess IGST credit across CGST and SGST in any proportion.
Can I set off CGST credit against SGST liability?
No. Under the federal taxation structure of GST in India, CGST belongs to the Union Government and SGST belongs to the State Government. Consequently, CGST input credit can never be used to settle SGST output liability, and vice versa.
What happens if my available ITC exceeds output tax liability?
Any unutilized balance in your Electronic Credit Ledger is carried forward indefinitely to subsequent tax periods to offset future output liabilities. There is no expiry date for accumulated ITC balances.