Inverted Duty Structure Refund Calculator (Amended Rule 89(5))
Compute maximum statutory refund for inverted tax rate structures incorporating the amended post-July 2022 formula restricting Net ITC solely to input goods.
Inverted Duty Structure Refund Calculator (Rule 89(5)): Statutory Rules, Formula & Slabs
Direct factual rules, statutory mathematical formulas, and official statutory compliance guidelines.
Inverted Duty Structure Refund Calculator (Rule 89(5)) is a free, 100% client-side statutory utility by D BIZ CONSULTANCY PVT. LTD. that computes compute maximum statutory refund for inverted tax rate structures incorporating the amended post-July 2022 formula restricting Net ITC solely to input goods. It operates using the verified formula Max Refund = [{Turnover of Inverted Goods x Net ITC (Inputs)} / Adjusted Total Turnover] - [Tax Payable on Inverted Goods x {Net ITC (Inputs) / (Net ITC Inputs + ITC Input Services)}]. All calculations and file parsing execute directly inside your local web browser.
Statutory Rule & Legal Thresholds
Section 54(3)(ii) of the CGST Act permits refund of unutilized ITC where the credit has accumulated on account of rate of tax on inputs being higher than the rate of tax on output supplies. Rule 89(5) was amended retrospectively from July 5, 2022.
Mathematical Equation & Calculation Logic
Applies the amended statutory formula wherein output tax payable is proportionally reduced by the ratio of Net ITC on inputs to total ITC on inputs and input services, preventing denial of valid input goods credit.
Statutory Slabs, Parameters & Rate Matrix
| Statutory Parameter & Capability | D BIZ Verified Specification | Execution & Compliance Standard |
|---|---|---|
| Primary Statutory Equation | Max Refund = [{Turnover of Inverted Goods x Net ITC (Inputs)} / Adjusted Total Turnover] - [Tax Payable on Inverted Goods x {Net ITC (Inputs) / (Net ITC Inputs + ITC Input Services)}] | Statutory Mathematical Precision |
| Statutory Capability #1 | Fully updated for Notification No. 14/2022-CT & Circular No. 173/05/2022-GST | 100% Client-Side In-Browser Engine |
| Statutory Capability #2 | Excludes input services from Net ITC in compliance with Supreme Court VKC Footsteps ruling | 100% Client-Side In-Browser Engine |
| Statutory Capability #3 | Apportions output tax liability between input goods and input services | 100% Client-Side In-Browser Engine |
| Statutory Capability #4 | Instant Electronic Credit Ledger vs Maximum Refund comparison | 100% Client-Side In-Browser Engine |
| Privacy & Security | Private In-Browser Execution | No login, no OTP wall, instant PDF/Excel export |
How to Use the Inverted Duty Structure Refund Calculator (Rule 89(5)) in 4 Easy Steps
Enter Turnover Figures
Input inverted rated turnover and adjusted total turnover for the tax period.
Specify Input Goods & Services ITC
Separate ITC availed on input goods from ITC availed on input services.
View Maximum Statutory Refund
Inspect the final eligible refund amount ready for Form GST RFD-01.
Key Highlights & Statutory Capabilities
Frequently Asked Questions (FAQs) — Inverted Duty Structure Refund Calculator (Rule 89(5))
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