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

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    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:

    • Understanding Input Tax Credit – Rules, Eligibility & Claims

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

    Other Tools You Might Find Useful

    BUSY offers more than just an ITC Calculator. Here are other essential tools for a complete tax and finance ecosystem:

    • GST Calculator – Calculate applicable GST for your invoices
    • HSN Code Finder – Find the correct HSN code & GST rate
    • TDS Calculator – Estimate tax deducted at source for various payments
    • Start Your Business Toolkit – From registration to compliance, simplify business setup

    Frequently Asked Questions

    • Can ITC be claimed on capital goods?
      Yes, input tax credit can be claimed on capital goods used in the course of business, provided they are not blocked under Section 17(5) of the CGST Act. This includes plant and machinery, but not motor vehicles for personal use.
    • Do I need to calculate IGST, CGST, and SGST credits separately?
      Yes. Each type of credit must be recorded and adjusted separately as per GST rules. BUSY’s calculator handles this automatically by adjusting each credit in the prescribed sequence.
    • Is the ITC Calculator suitable for small businesses?
      Absolutely. Whether you’re a startup, small trader, or freelancer, this calculator simplifies your GST compliance by showing you how to use your credits optimally without needing deep tax knowledge.
    View all FAQs
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