The battle, launched from Sharma's small shop in the northern city of Agra and now involving more than 120 lawyers, has the central bank and government struggling to defend what was meant to be a helping hand.
The problem, as the other borrowers see it, is that they must pay additional interest on their skipped repayments during the moratorium, which they call "interest-on-interest."
The borrowers - including a leading real estate industry group, power utilities, shopping malls and small businesses - says the scheme unfairly hits them even as many have been financially devastated by the pandemic, that the banks must forgive the interest and compound interest that accrued while their payments were suspended.
Sharma, a voluble man with a thick moustache and a crop of dark hair, says the six-month reprieve, which ended on Aug. 31, increased his debt load because of the extra interest. He is also paying monthly instalments on a $21,700 business loan, for which he did not seek a moratorium.
"I realized this scheme was not to give us relief, but to give us more grief," he told Reuters in his shop, where idols of Hindu deities compete for space with Ray Ban and Prada sunglass displays.
BANKS CAUGHT IN THE MIDDLE
After Prime Minister Narendra Modi's government imposed the world's strictest COVID-19 lockdown in March, Sharma saw no customers for months, though he had to keep paying his $2,700 in monthly recurring costs.
Across this nation of 1.3 billion people, companies say they are struggling to keep up with their loans as the lockdown has choked business and consumer spending. The economy collapsed a record 23.9% in the April-June quarter from a year earlier.
Now, even with the moratorium, "the interest-on-interest will result in winding up various real estate and other companies," said Utsav Trivedi, a lawyer representing one group of Sharma's fellow complainants.
In a typical case, a homeowner with 15 years remaining on a roughly $40,000 loan would pay an additional $6,000 in interest due to the moratorium, an extra 16 months' worth, explains SBI, India's top state-run bank.
Citing Sharma's case, the finance ministry last week ordered a panel to analyse the impact of withdrawing interest and the compounding levy.
The Supreme Court appears sympathetic to the borrowers on the extra interest. During the most recent hearing on Sept. 10, Justice Ashok Bhushan said the court was "inclined to pass an order" that banks forgive the additional levies.
India's banks, too, are reeling from the pandemic, and the industry fears a major judicial setback, given that the court has previously overturned government decisions in ways that hit sectors from coal mining and telecommunications.
Banks already have bad loans of over $120 billion, much of it on the books of state-run lenders, which dominate India's banking landscape, and the non-performing debt is set to surge in coming months. Any deterioration in their books would force the government, itself deeply indebted, to set aside billions of dollars to recapitalise the banks.
Combined annual profits at private banks and state-owned banks is some 3.2 trillion rupees ($43 billion), "so a waiver of interest will be totally destabilising," said analyst Anil Gupta at credit rating agency ICRA.
The Reserve Bank of India told the court an "interest-free" moratorium would cut the sector's income by at least 2 trillion rupees ($27 billion), or 1% of India's GDP. "There would be huge consequences for the stability of the banking system," the central bank said.
The finance ministry told the court last month what waiving what it says is standard compound interest would be "against the basic canons of finance", adding it was crucial to protect the more than 1.9 billion deposit accounts that earn interest income.
The central bank and ministry did not respond to requests for comment.
Sharma, while performing his daily Hindu prayers, said he remains hopeful he will get relief.
"With faith in God I've thought of ways to come out of this muddle," he said about his case, which will next be heard on Sept. 28.
(Reporting by Aftab Ahmed in Agra and Nupur Anand in Mumbai; Graphic by Gaurav Dogra; Editing by Aditya Kalra and William Mallard) ((email@example.com; +91-11-49548021; Twitter @adityakalra;))