GST Rule 86B: Understanding ITC Utilisation Restrictions, Applicable Exceptions, and Real-World Implications
Background and Legislative Context
The GST framework is fundamentally built on the principle of seamless Input Tax Credit (ITC) flow across the supply chain. This mechanism ensures that taxes paid at each stage are available as credit, thereby eliminating the cascading effect of taxation. However, widespread incidents of fraudulent invoicing and systemic misuse of ITC compelled the Government to introduce a targeted restriction mechanism.
Rule 86B was inserted into the CGST Rules through Notification No. 94/2020 – Central Tax dated 22.12.2020, forming part of the CGST (Fourteenth Amendment) Rules, 2020. This rule came into force on 01.01.2021 and operates as a deliberate anti-evasion safeguard designed to ensure a minimum level of cash outflow toward GST liability, thereby protecting Government revenue against ITC-based fraud.
What Does Rule 86B Prescribe?
At its core, Rule 86B imposes a restriction on the extent to which a registered person can offset their output tax liability using accumulated ITC.
The rule mandates that:
Where the value of taxable supplies — excluding exempt supplies, nil-rated supplies, and zero-rated supplies — exceeds ₹50 lakh in a given month, the registered person shall not utilise ITC beyond 99% of the total output tax liability. The remaining minimum 1% must be discharged in cash.
In practical terms, this means that regardless of how much ITC is available in the electronic credit ledger, at least 1 paise per rupee of GST output liability must be paid in cash whenever the monthly taxable turnover crosses the ₹50 lakh threshold.
How the Restriction Works: A Numerical Illustration
To understand the operational mechanics of Rule 86B, consider the following scenario:
Illustration — Mr. Sharma, a Works Contractor:
| Parameter | Amount |
|---|---|
| Output Tax Liability for the Month | ₹1,25,000 |
| ITC Available in Credit Ledger | ₹1,25,000 |
Without Rule 86B: The assessee could utilise the entire ₹1,25,000 as ITC, with zero cash outflow.
With Rule 86B Applied:
- Maximum ITC Utilisation Permitted: 99% of ₹1,25,000 = ₹1,23,750
- Mandatory Cash Payment: 1% of ₹1,25,000 = ₹1,250
Even though sufficient ITC exists to cover the full liability, the assessee is legally obligated to discharge ₹1,250 in cash. This is the essence of the restriction — it is not about ITC availability but about enforcing minimum cash contribution to the exchequer.
Threshold for Applicability
Rule 86B is not a blanket restriction applicable to all registered persons. Its activation is conditioned on a specific turnover threshold being crossed.
When Does Rule 86B Apply?
The rule becomes operative when:
- The registered person makes taxable supplies (i.e., supplies attracting GST)
- The aggregate value of such taxable supplies in a single calendar month exceeds ₹50 lakh
- This computation excludes:
- Exempt supplies
- Nil-rated supplies
- Zero-rated supplies (including exports)