Free Trial

GST Input Tax Credit Calculator

Enter tax payable and ITC credits available to calculate Input Tax Credit under IGST, CGST & SGST.

Tax Type
Tax Payable
Input Tax Credit
IGST
CGST
SGST
Tax Credit Summary
Category IGST CGST SGST
Gross Tax Payable 0 0 0
Remaining ITC 0 0 0
IGST used for CGST 0 0 0
IGST used for SGST 0 0 0
Net Tax Payable 0 0 0

India’s No.1 GST Billing &
Accounting Software

check_circleLightning-Fast Billing with Barcode scanning

check_circleAuto E-Way Bill & E-Invoicing

check_circleMobile App

check_circleComplete Accounting

check_circleAdvanced Inventory Management

check_circleAuto Payment Reminders

check_circle1-Click GST Filing & Reconciliation

check_circle24*7 support

Book A Demo



BUSY Input Tax Credit (ITC) Calculator

Accurate calculation and adjustment of Input Tax Credit (ITC) is one of the most crucial parts of GST compliance for businesses in India. Whether you're a manufacturer purchasing raw materials, a service provider procuring digital tools, or a retailer handling both interstate and intrastate supplies-getting your ITC calculations right directly impacts your net GST payable and cash flow efficiency.

With BUSY’s ITC Calculator, you can instantly estimate your eligible input credits under CGST, SGST, IGST, and apply them correctly against your tax liabilities. This tool is especially helpful for businesses filing GSTR-3B and planning their GST payments. It ensures you're not underutilising available credits or overpaying GST due to incorrect adjustments.

Forget the confusion of manual tables and spreadsheets. BUSY’s calculator gives you a clear picture of how to adjust your available ITC in compliance with Section 49 of the CGST Act-starting with IGST and flowing down correctly to CGST and SGST in the prescribed order.

How to Use BUSY’s ITC Calculator?

BUSY’s ITC Calculator is designed for ease, speed, and compliance. Here’s how you can calculate your input credit adjustment within seconds:

  1. Enter Your Tax Payable:
    • Add the total payable tax under IGST, CGST, and SGST from your GSTR-3B or billing summary.
  2. Enter Available ITC:
    • Input the available credit under IGST, CGST, and SGST-these are usually auto-populated from GSTR-2B but can be entered manually for estimation.
  3. Click 'Calculate ITC Adjustment':
    • The tool will automatically apply ITC in the correct order:
      • IGST Credit → Adjusts IGST, then CGST, then SGST
      • CGST Credit → Adjusts only CGST
      • SGST Credit → Adjusts only SGST
  4. View Final Output:
    • The tool will display your net GST payable (if any) after ITC is adjusted
    • It will also show unused ITC (if excess) for future use

Whether you're estimating before filing or double-checking entries, the tool keeps you compliant with GST norms and saves time every return cycle.

Types of Input Tax Credit Calculated

Understanding the types of taxes under GST is essential to calculate ITC correctly. Here's a simple breakdown:

  • IGST (Integrated GST): Applied on interstate transactions or imports. IGST credit is the most flexible-it can be used to pay off IGST, CGST, or SGST liabilities in that order.
  • CGST (Central GST): Charged on intra-state supplies along with SGST. CGST credit can only be used to pay CGST liability.
  • SGST (State GST): Collected by state governments on intra-state supplies. It can only be used to pay SGST liability and not be cross-utilized with CGST.
  • UTGST (Union Territory GST): Applied instead of SGST in union territories like Chandigarh, Daman & Diu, etc.

Example:

If your business made sales in your state (Delhi) and also imported raw material from another state (Maharashtra), you'd likely have IGST on imports and CGST+SGST on your sales. BUSY’s ITC calculator ensures that your IGST credit gets utilized fully first, before using CGST or SGST credits-exactly as per GST rules.

Example of ITC Calculation with Adjustment

Let’s walk through a real-world example:

Tax Payable (Output GST):

  • IGST = ₹12,000
  • CGST = ₹10,000
  • SGST = ₹10,000

Input Tax Credit (Available):

  • IGST Credit = ₹18,000
  • CGST Credit = ₹3,000
  • SGST Credit = ₹4,000

Adjustment Process:

  1. Use IGST Credit to pay:
    • IGST: ₹12,000 → Balance IGST credit = ₹6,000
    • CGST: ₹10,000 → Use remaining ₹6,000 of IGST → Balance CGST payable = ₹4,000
  2. Use CGST Credit:
    • CGST: Remaining ₹4,000 → Use CGST credit ₹3,000 → Final CGST payable = ₹1,000
  3. Use SGST Credit:
    • SGST: ₹10,000 – ₹4,000 = Final SGST payable = ₹6,000

Final Payable:

  • IGST = ₹0
  • CGST = ₹1,000
  • SGST = ₹6,000

This structured adjustment helps you minimize outflow and maximize credit utilization-BUSY’s ITC Calculator does this instantly and accurately.

Explore Relevant Guides

To master GST credits and stay fully compliant, check out this expert guide:

This blog dives deeper into ITC eligibility, blocked credits under Section 17(5), documentation rules, and practical tips to avoid mismatches during reconciliation.

Frequently Asked Questions

  • Who can use the Income Tax Calculator?
    Anyone earning an income in India, be it a salaried employee, business owner, freelancer, or retiree, can use this calculator to estimate their tax liability.
  • What inputs are required to calculate income tax?
    You'll need to provide details like gross income, deductions (under 80C, 80D, etc.), exemptions (HRA, LTA), and choose the applicable tax regime.
  • Does the calculator consider standard deductions and exemptions?
    Yes. BUSY's calculator automatically applies the standard ₹50,000 deduction and allows for other common deductions and exemptions applicable in your tax scenario.