GST Rule 86B: The 1% Cash Rule That Trips Up High-Turnover Businesses

It was a routine GSTR-3B filing day for the finance team at a Delhi-based consumer goods distributor with a ₹12 crore monthly turnover. They had ample ITC balance — ₹38 lakhs sitting unused in the electronic credit ledger. The accountant went to offset the output liability with ITC as always. The portal rejected the filing. Reason: Rule 86B.

One rule. Introduced without fanfare in December 2020. And it cost them a cash outflow they had not budgeted for.

What Rule 86B Says

Rule 86B of the CGST Rules, 2017 mandates that a registered person whose taxable supply value exceeds ₹50 lakhs in a month must pay at least 1% of their output tax liability in cash — regardless of how much ITC balance they hold.

In plain terms: if your GSTR-3B output tax liability for the month is ₹10 lakhs, you cannot offset 100% of it with ITC. You must pay at least ₹10,000 in cash (1% of ₹10 lakhs) from your electronic cash ledger. The remaining ₹9.9 lakhs can come from ITC.

The rule applies to the total value of taxable supplies, not just B2B supplies — so distributors, traders, and manufacturers with high-volume, low-margin businesses are disproportionately affected.

The Exceptions

Rule 86B does not apply if:

• The registered person or any of their proprietor/partners/directors/karta has paid income tax exceeding ₹1 lakh in each of the last two financial years.
• The registered person has received a refund exceeding ₹1 lakh under GST in the preceding financial year on account of zero-rated supplies or inverted duty structure.
• The registered person has discharged more than 1% of GST liability through the electronic cash ledger in each of the last two months.
• The person is a government department, PSU, local authority, or statutory body.

The most practical escape hatch for most businesses is the income tax condition — if the proprietor/director has filed ITRs showing ₹1 lakh+ tax paid for the past two years, the rule does not apply.

A Real-World AAR Decision

In In re: Sai Siddhi Enterprises (AAR Maharashtra, 2022), a wholesale trader challenged Rule 86B on the basis that it impaired the seamless flow of ITC, a fundamental design principle of GST. The AAR held that Rule 86B is a valid anti-evasion measure, noting that the 1% threshold is minimal and the exceptions are sufficiently broad to protect genuine taxpayers.

Three Practical Takeaways

1. Check the exceptions first. Before assuming Rule 86B applies, verify whether your proprietor/directors qualify on the income tax payment criterion. Most established business owners will, but new businesses and startups often will not.
2. Maintain a small cash balance in your GST electronic cash ledger. If Rule 86B applies to you, keep a rolling minimum in the cash ledger so GSTR-3B filing is never blocked.
3. Track turnover monthly, not just at quarter-end. Rule 86B triggers on a month-by-month basis. A spike in one month — say, a large B2G invoice — can unexpectedly push you over ₹50 lakhs and trigger the rule for that month alone.

Quick Quiz

A trading company has monthly taxable turnover of ₹60 lakhs. Output GST liability: ₹10.8 lakhs. ITC balance: ₹15 lakhs. The proprietor has no income tax filing history. How much cash must be paid via the electronic cash ledger this month?

A) ₹0 (ITC can cover everything)    B) ₹10,800    C) ₹1,08,000    D) ₹6,000

Answer in the comments — full explanation next Thursday.