NPA classification & Provisioning Norms Explained (CAIIB)

NPA classification is one of the highest-yield. Most exam-tested topics in CAIIB, and a concept every working banker must master because it sits at the heart of RBI's prudential discipline. Whether you are studying for Advanced Bank Management (ABM) or simply trying to make sense of why a perfectly good-looking loan suddenly shows up in a "stressed assets" report.

Understanding how a Non-Performing Asset is identified, graded and provided for is non-negotiable. This pillar guide walks you through the complete NPA classification framework — the 90-day rule. The Special Mention Account (SMA) early-warning stages, the four asset categories, RBI's provisioning percentages, and the traps that trip up candidates in the exam hall.

What Is an NPA? The Core Definition

A loan or advance becomes a Non-Performing Asset when it stops generating income for the bank. The governing framework is RBI's Master Circular on Prudential Norms on Income Recognition, Asset Classification and Provisioning (IRACP). Under these norms, an asset is treated as non-performing when interest and/or principal instalment remains overdue for a period of more than 90 days. "Overdue" simply means any amount due to the bank that has not been paid on the due date fixed by the bank.

The 90-day rule that anchors NPA classification applies differently across product types, and the exam loves these distinctions:

• Term loans: NPA when interest or principal instalment is overdue for more than 90 days.
• Cash credit / overdraft: NPA if the account is "out of order" — the outstanding balance remains continuously in excess of the sanctioned limit/drawing power for 90 days, or there are no credits for 90 days, or credits are insufficient to cover the interest debited during the same period.
• Bills purchased/discounted: NPA when the bill remains overdue for more than 90 days.
• Agricultural advances: A short-duration crop loan is NPA if instalment/interest remains overdue for two crop seasons; a long-duration crop loan after one crop season.

SMA: The Early-Warning Stage Before NPA

Before an account turns into an NPA, RBI requires banks to flag incipient stress through Special Mention Account (SMA) categories. This is a frequent objective-type question, so commit the day-buckets to memory. For loans other than revolving facilities, the classification is based on principal/interest overdue:

• SMA-0: overdue up to 30 days but the account shows early signs of stress.
• SMA-1: principal or interest overdue between 31 and 60 days.
• SMA-2: principal or interest overdue between 61 and 90 days.

The moment overdues cross 90 days, the account migrates from SMA-2 to NPA. RBI clarified through its November 2021 asset-classification circular that tagging happens at the day-end process — an account is tagged SMA-1 on completing 30 days continuously overdue and SMA-2 on the date that marks 60 days overdue. For revolving facilities like cash credit. The same buckets apply based on how long the account stays "out of order." Understanding this continuum is essential because the entire NPA classification system is really a story of how long money has stayed unpaid.

The Four Asset Classification Categories

Once an asset is non-performing, banks must classify it into one of three NPA sub-categories (the fourth, Standard, being the healthy bucket). This grading drives how much capital the bank must set aside and is the backbone of NPA classification.

1. Standard Asset

An asset that is not an NPA and carries only normal business risk. It is performing, but RBI still mandates a general provision on it.

2. Sub-Standard Asset

An account that has remained an NPA for a period up to 12 months. Here the borrower's net worth or the security value is no longer enough to fully assure recovery. And there is a distinct possibility of the bank sustaining some loss.

3. Doubtful Asset

An account that has remained sub-standard for 12 months — i.e., it has been an NPA for more than 12 months. Recovery is highly questionable. Doubtful assets are further sub-classified by age into Doubtful-1 (up to 1 year), Doubtful-2 (1 to 3 years) and Doubtful-3 (more than 3 years), each attracting steeper provisioning.

4. Loss Asset

An asset where loss has been identified by the bank, internal/external auditors, or RBI inspection, but the amount has not been fully written off. The asset is considered uncollectible and of such little value that its continuance as a bankable asset is not warranted.

Provisioning Norms: How Much Banks Must Set Aside

Provisioning is the capital cushion a bank books against expected losses, and it follows directly from NPA classification. The percentages below reflect RBI's IRACP framework and are a perennial favourite in CAIIB numericals. Note that provisions differ on the secured versus unsecured portion of the exposure.

• Standard assets: a general provision of 0.40% for most categories, with higher rates for sensitive sectors (for example, 1% for commercial real estate, 0.75% for commercial real estate – residential housing, and 0.25% for agriculture and SME). These provisions are shown separately and are not netted from gross advances. Verify the latest sector rates on rbi.org.in, as RBI revises them periodically.
• Sub-standard assets: 15% of the outstanding on the secured portion. The unsecured portion attracts an additional 10%, taking it to 25%; advances classified as sub-standard where the exposure was unsecured from the outset carry that higher 25% rate.
• Doubtful assets — unsecured portion: 100%.
• Doubtful assets — secured portion: 25% for D-1 (up to 1 year), 40% for D-2 (1 to 3 years), and 100% for D-3 (more than 3 years).
• Loss assets: 100% — the entire outstanding should be written off or fully provided if it remains on the books.

For a worked numerical, candidates must split the exposure into secured and unsecured slices, apply the correct percentage to each, and then sum. Mixing up the secured/unsecured rates is the single most common arithmetic error in this topic. RBI's broader prudential framework and definitions are published on rbi.org.in; always verify the latest percentages there, as RBI periodically refines them through Master Directions.

Key Linked Concepts You Must Connect

NPA classification rarely appears in isolation. The CAIIB syllabus expects you to link it with several related ideas:

• Income recognition: Once an account is NPA, interest cannot be booked on accrual basis — it is recognised only on actual realisation. Any unrealised interest previously booked must be reversed.
• Borrower-wise, not facility-wise: All facilities of a borrower (and the investment in that borrower's securities) are classified as NPA if any one facility becomes NPA. This "borrower-wise classification" rule is heavily tested.
• Upgradation: An NPA can be upgraded to Standard only if the entire arrears of interest and principal are paid — partial payment does not upgrade. RBI tightened this to require clearing all overdues.
• Gross NPA vs Net NPA: Net NPA = Gross NPA minus provisions held. The Provision Coverage Ratio (PCR) measures the cushion against gross NPAs.
• Restructured accounts and resolution: Restructuring of advances and the framework for resolution of stressed assets carry their own asset-classification consequences.

Common CAIIB Exam Traps

Examiners design questions to catch surface-level reading. Watch for these NPA classification traps:

• "More than 90 days" vs "90 days": The threshold is more than 90 days overdue, not exactly 90.
• Sub-standard period: An asset stays sub-standard for up to 12 months — many candidates wrongly write 90 days or 18 months.
• Doubtful sub-categories: The up-to-1-year, 1-to-3-year and over-3-year buckets each have distinct secured-portion provisions (25%/40%/100%).
• Out of order vs overdue: "Out of order" is the test for cash credit/overdraft; "overdue" applies to term loans and bills. Using the wrong test changes the answer.
• SMA buckets: SMA-1 is 31 to 60 days, SMA-2 is 61 to 90 days — easy to swap under time pressure.
• Provision on standard assets: Students often forget standard assets also need provisioning.

A Smart Study Approach

Treat this chapter as a flowchart, not a paragraph. Draw the NPA classification timeline once: due date → SMA-0/1/2 → 90 days → NPA → 12 months sub-standard → doubtful (D1/D2/D3) → loss. Beside each node, pencil in the provisioning percentage. Revising from this single diagram beats re-reading pages of text. Then drill numericals until the secured/unsecured split becomes automatic.

Pair your reading with structured practice. Work through the official scheme on the CAIIB syllabus for 2026 so you know exactly which paper carries IRACP weight, then attempt timed sets on our free CAIIB mock tests to expose your weak spots under exam conditions. Our full CAIIB course bundles Hinglish and English video classes, PDF notes and thousands of MCQs covering NPA classification and the entire ABM paper, while the tests section lets you benchmark progress chapter by chapter.

Bringing It Together

NPA classification is ultimately a disciplined accounting response to a simple question: how long has the borrower not paid, and how recoverable is the money? Once you internalise the timeline — overdue. SMA stages, the 90-day cut-off, the 12-month migration to doubtful, and the matching provisioning percentages — both the conceptual MCQs and the numericals become predictable points. Keep RBI's IRACP Master Circular as your single source of truth. Verify any percentage or date on rbi.org.in before the exam, and rehearse with realistic question banks rather than passive reading.

Ready to lock this topic in? Start free on iibf.store — explore sample CAIIB classes, attempt a mock, and download the NPA classification notes today. Build your confidence one chapter at a time and walk into the exam knowing this high-weightage topic is firmly in your control.