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ITC Utilization Calculator

Watch each credit ledger drain in the order the rules actually allow.

Liabilities for the period
Opening credit ledger balances

Enter liabilities and ledger balances to watch the credits drain in rule order.

How the calculation works

Watch each credit ledger drain exactly as the rules allow. Great for month-end planning: know your closing balances before you file.

  1. IGST legIGST credit first; balance may fund CGST & SGST
  2. CGST legRemaining IGST credit, then CGST credit
  3. SGST legRemaining IGST credit, then SGST credit
  4. ShortfallUncovered liability = cash challan required

Worked example

Dues: ₹8,000 IGST + ₹6,000 CGST + ₹6,000 SGST. Ledgers: ₹10,000 IGST + ₹4,000 CGST + ₹2,000 SGST.

You enter

Total dues₹20,000
Total credits₹16,000

You get

IGST ledger closes at₹0.00 (₹2,000 helped CGST leg)
Cash required₹4,000.00

Important points to keep in mind

  • Rule 88A ordering is sequential — later legs inherit whatever earlier legs leave behind.
  • Closing balances roll into next month; track them to avoid surprise challans.
  • Election of IGST-leftover priority (CGST-first vs SGST-first) changes individual balances, not total cash.

Frequently asked questions

Is the utilisation order mandatory?

Yes, the sequence within each head is fixed by rules; only the CGST-vs-SGST preference for spare IGST credit is elective.

Can unused credit expire?

No expiry — it carries forward indefinitely until used or refunded under qualifying conditions.

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Done estimating? Prepare the actual return.

GSTSelf walks you through your invoices, builds GSTR-1 and GSTR-3B data, and keeps everything on your device — no uploads, no account.

Part of GSTSelf · Free GST tools for India · Rules version tools-2026-08-v1