Rule 86B Decoded: 6 Essential Exceptions to the 99% ITC Limit under GST

What is Rule 86B under CGST Rules?

Inserted via Notification No. 94/2020 – Central Tax (effective January 1, 2021), Rule 86B of the CGST Rules, 2017 places a cap on the maximum utilization of the Electronic Credit Ledger (Input Tax Credit) for discharging output tax liability.

In practice, this means that even if a taxpayer holds sufficient ITC balance, they are forced to discharge at least 1% of their output tax liability in cash through the Electronic Cash Ledger. However, to prevent genuine businesses and high-taxpaying entities from facing unnecessary liquidity strains, the legislature provided six specific carve-outs.

The 6 Statutory Exceptions to Rule 86B Restrictions

If a registered person meets any single condition among the six exceptions listed below, the 99% ITC restriction is lifted, allowing 100% utilization of eligible ITC to clear output tax liabilities for that tax period.

1. Income Tax Payment Threshold Exception

The restriction under Rule 86B does not apply if key managerial personnel or the entity itself has paid significant income tax in recent years. Specifically, the exemption applies if the specified persons have paid more than ₹1 Lakh as Income Tax in each of the last two financial years for which the due date to file return under Section 139(1) of the Income Tax Act, 1961 has expired.

Who qualifies as a specified person?

• The registered person (entity itself)
• Proprietor (in case of a Sole Proprietorship)
• Karta (in case of a Hindu Undivided Family - HUF)
• Managing Director (in case of a Company)
• Any two Partners (in case of a Partnership Firm / LLP)
• Whole-time Directors (in case of a Public/Private Company)
• Members of the Managing Committee of an Association / Board of Trustees

2. Refund on Account of Zero-Rated Supplies [Section 54(3)(i)]

If the registered person has received a refund of more than ₹1 Lakh in the preceding financial year on account of unutilized Input Tax Credit arising from zero-rated supplies (such as physical exports or supplies to Special Economic Zone units/developers) made without payment of tax under a Letter of Undertaking (LUT) or Bond, Rule 86B will not apply.

3. Refund under Inverted Duty Structure [Section 54(3)(ii)]

Businesses operating under an inverted duty structure—where the tax rate on inputs is higher than the tax rate on output supplies—frequently accumulate unutilized ITC. If the entity received a refund of exceeding ₹1 Lakh in the preceding financial year under Section 54(3)(ii), they are fully exempt from the 1% cash payment restriction.

4. Cumulative 1% Cash Payment Discharge Exception

Rule 86B provides relief to taxpayers who consistently discharge output tax via cash. If the registered person has cumulatively paid output tax in cash exceeding 1% of total output tax liability, applied cumulatively up to the relevant month in the current financial year, the restriction ceases to apply for that month.

Example: If your total cumulative output tax liability from April to September is ₹1 Crore, and you have already paid ₹1.25 Lakhs (1.25%) in cash cumulatively during these months, you are not mandated to pay 1% cash for October, even if turnover exceeds ₹50 Lakhs.

5. Specified Exempt Entities

Certain public institutions and public sector entities are completely exempted from the purview of Rule 86B. The rule does not apply to:

• Government Departments
• Public Sector Undertakings (PSUs)
• Local Authorities
• Statutory Bodies

6. Retail Sale Price (RSP) Carve-Out under Rule 31D

A registered person (other than a manufacturer) is exempt from Rule 86B specifically in respect of goods covered under Rule 31D, where GST output tax liability has been paid by the supplier based on the Retail Sale Price (RSP) declaring obligations under the Legal Metrology Act, 2009.

Commissioner's Overriding Discretionary Powers

Compliance Checklist for CFOs and Tax Practitioners

To avoid unnecessary cash outflows and safeguard compliance standing during monthly GSTR-3B filings, finance teams should follow this step-by-step audit workflow:

1. Check Monthly Taxable Turnover: Exclude exempt supplies and zero-rated supplies. Does the remaining value exceed ₹50 Lakhs for the tax period?
2. Evaluate Income Tax Records: Have the key managerial personnel/proprietor paid > ₹1 Lakh IT in each of the last 2 relevant financial years?
3. Review Previous FY Refund History: Did the entity receive > ₹1 Lakh refund under Section 54(3)(i) or 54(3)(ii) in the prior financial year?
4. Calculate Cumulative Cash Ratio: Has the entity paid > 1% of total cumulative output tax in cash up to the current month of the current FY?
5. Verify Entity Classification & Goods Type: Is the entity a PSU/Govt department, or dealing in Rule 31D specified retail goods?

Practical Impact & Final Takeaway

Rule 86B is not a blanket 1% mandatory cash levy on all large businesses. It is a targeted anti-evasion mechanism designed to curb fake invoicing networks and shell entities. Legitimate businesses with active tax filing histories, refund credentials, or consistent cash tax payments can comfortably utilize 100% of their available Input Tax Credit without locking up working capital.

Tax practitioners must build automated validation rules within their ERP/GST compliance systems to test for these exceptions before generating monthly GSTR-3B liability statements.