What an NPA Is (the 90-Day Rule)NPA
A loan turns NPA when interest or principal goes unpaid for more than 90 days.
Why you care
NPAs are what destroy the spread your bank works to build. The 90-day rule is precise and unforgiving — not a judgement call, a counter. In lending or collections, knowing exactly when day 91 hits keeps you from being blindsided at quarter-end.
Run the numbers
Miss an EMI on 5 Jan and stay unpaid; around day 91 (early April) the account flips to NPA (illustrative). From that moment the bank can no longer book its interest as income and must start providing against it.
Where this goes
The 90 days don't arrive without warning — the account passes through the SMA stress buckets first. Once it's an NPA, it starts down the asset-classification ladder and triggers provisioning that hits the P&L.
Why you care
A loan becomes a Non-Performing Asset (NPA) when the borrower has not paid interest or principal due on it for more than 90 days. That's the line at which a bank must officially admit a loan has stopped working.
NPAs are the single biggest thing that destroys the spread your bank works so hard to build. A loan that goes bad doesn't just stop earning — it forces the bank to set aside profit against it (provisioning) and to stop counting its interest as income. The 90-day rule matters because it's precise and unforgiving: it's not a judgement call, it's a counter. For anyone in lending, collections, or ops, knowing exactly when day 91 hits — and what it triggers — is the difference between managing stress and being blindsided by it at quarter-end.
Run the numbers
A borrower has a term loan with an EMI due on the 5th of each month (illustrative):
| Date | Status | Days Past Due (DPD) |
|---|---|---|
| 5 Jan | EMI due, not paid | 0 |
| 5 Feb | Still unpaid | 31 |
| 5 Mar | Still unpaid | 59 |
| 6 Apr | Still unpaid → crosses 90 | 91 → NPA |
On day 91 the account flips to NPA. From that moment the bank can no longer book the loan's interest as income (see IRAC), must classify it as sub-standard, and must start providing against it. One missed payment is a problem; ninety days of them is a balance-sheet event.
Where this goes
The 90 days don't arrive without warning — the account passes through the SMA stress buckets first, which is the window to act. Once it's an NPA, it starts down the asset-classification ladder and triggers provisioning that hits the P&L. This is where the spread starts to leak.