GST Input Tax Credit Calculator

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.

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.