A Non-Performing Asset (NPA) is a loan or advance where the borrower has stopped making interest or principal payments for a specified period.
An asset becomes an NPA when it stops generating income for the lender.
In India, as per guidelines of the Reserve Bank of India, a loan is classified as NPA if interest or principal remains overdue for more than 90 days.
"If a borrower fails to pay EMI for more than 90 days, the loan becomes an NPA."