Investment Classification in Banks: HTM, AFS & HFT (IIBF)

Investment classification in banks is one of the highest-yield topics in the IIBF Treasury, Investment and Risk Management (TIRM) paper, because it decides how every security a bank owns is valued, where its gains and losses land, and how much regulatory capital the bank must set aside. Get the classification right and the rest of the treasury syllabus, valuation, mark-to-market accounting, duration and the government-securities market, falls neatly into place. Get it wrong, and you will misread half the numerical questions the examiner sets.

This guide walks you through the investment categories, the valuation rule attached to each, the duration concept examiners love, and the way the whole portfolio plugs into the G-Sec market and the Statutory Liquidity Ratio. Throughout, treat any specific threshold, percentage or transfer rule as time-sensitive: the broad logic below is stable, but always confirm current figures against the latest released IIBF notification and RBI master direction before the exam.

Why investment classification in banks matters

A bank's investment book is rarely a passive store of value. It is an active balance-sheet engine that earns interest, meets statutory liquidity requirements, parks surplus funds, and takes calculated bets on the direction of interest rates. Investment classification in banks is the rulebook that tells the treasury how each of those holdings must be accounted for.

The reason the IIBF tests it so heavily is that classification sits at the crossroads of three disciplines at once: accounting (how the security is carried in the books), regulation (how much capital it consumes), and market risk (how its value swings as yields move). A single misclassification can flatter or understate reported profit, distort capital ratios, and hide the true interest-rate risk a bank is carrying. That is why the rules on classifying a security at the moment of acquisition, and on shifting it later, are deliberately strict.

The three investment categories explained

Traditionally, Indian banks sorted their entire investment portfolio into three buckets, and that mental model is still the fastest way to learn the topic.

• Held to Maturity (HTM) covers securities the bank intends to hold until they mature. They are carried at acquisition cost, with any premium over face value amortised over the remaining life, and are not marked to market. Interest-rate swings therefore do not disturb their book value, which gives the bank earnings stability.
• Available for Sale (AFS) covers securities the bank may sell before maturity but is not actively trading. These are marked to market, but the valuation changes are routed through a reserve in equity rather than the profit and loss account.
• Held for Trading (HFT) covers positions taken specifically to profit from short-term price movements. These are marked to market with gains and losses flowing directly to profit and loss.

Under the revised RBI framework, which aligns Indian practice with global accounting standards, the portfolio is reorganised into HTM, Available for Sale (AFS) and Fair Value Through Profit and Loss (FVTPL), with HFT becoming a sub-category of FVTPL. The category a security falls into now depends on the bank's business model for managing it and the nature of its contractual cash flows, not merely on management's stated intent. Because moving a security between categories is tightly restricted, getting the classification right at acquisition is half the battle. You can drill the distinctions on realistic portfolio scenarios using our TIRM practice tests.

Valuation and mark to market: the rule behind each bucket

Here is the single most important idea in the whole topic: valuation flows directly from investment classification. Once you know the category, you know exactly how the security is valued and where any gain or loss appears.

HTM securities are held at amortised cost. The premium paid over face value is written down across the remaining life, and the holding is shielded from mark-to-market. AFS securities are revalued to market, but the swing in value is parked in an AFS reserve inside equity, so the bank's capital reflects market movements without distorting reported profit. FVTPL and HFT securities are marked to market with every gain and loss running straight through the profit and loss account, which makes reported earnings sensitive to market volatility.

Mark to market simply means revaluing a security at its current market price. Where a liquid market price is not available, banks fall back on yield-to-maturity curves published by recognised agencies. Two examiner favourites live here: the requirement to provide for depreciation on a portfolio, and the treatment of net appreciation versus net depreciation, which is a recurring numerical. You should also be able to explain, in one clean sentence, why a rise in interest rates lowers bond prices and therefore drags down the marked-to-market value of AFS and FVTPL holdings while leaving HTM untouched. Lock in the valuation vocabulary with our treasury terms match game.

Comparison: how the three categories behave

The table below is the kind of side-by-side comparison you should be able to reproduce from memory on exam day.

Duration, interest-rate risk and the trading book

Because marked-to-market portfolios rise and fall with interest rates, treasuries need a way to measure exactly how sensitive their holdings are. That measure is duration. Duration is the weighted-average time to receive a bond's cash flows, and it neatly approximates the percentage change in a bond's price for a one-percent change in yield. Modified duration refines the measure, and the rule to remember is simple: a higher duration means greater price sensitivity.

This is where classification meets strategy. A treasury that expects interest rates to rise will deliberately shorten the duration of its trading book to limit mark-to-market losses, while a treasury expecting rates to fall may lengthen it to amplify gains. If you want a deeper, worked treatment of this single idea, our dedicated guide on bond duration explained for CAIIB TIRM is the natural next read.

The trading book also carries a market risk capital charge under the Basel norms, computed across interest-rate, equity, foreign-exchange and other positions. Two precision metrics often appear alongside it: PV01, the change in price for a one-basis-point move in yield, and Value at Risk (VaR), which quantifies the potential loss over a horizon at a given confidence level. To smooth the impact of mark-to-market swings on the AFS and FVTPL books, banks maintain an Investment Fluctuation Reserve, which acts as a cushion for the profit and loss account. These risk metrics turn up as both theory and numerical questions, and you can build a fuller picture of how they fit together across the syllabus on the TIRM course hub.

The G-Sec market and the SLR linkage

Most of a bank's investment portfolio sits in government securities (G-Secs), which simultaneously help the bank meet its Statutory Liquidity Ratio (SLR). Understanding this market completes the picture the TIRM paper demands.

G-Secs are issued through RBI auctions on the e-Kuber platform, traded on the Negotiated Dealing System, and settled with a guarantee from the Clearing Corporation of India. The market spans several instruments:

• Treasury bills cover short maturities up to one year and are issued at a discount.
• Dated securities run for longer tenors and pay periodic coupons.
• State Development Loans (SDLs) are dated securities issued by state governments.

The yield on G-Secs forms the risk-free benchmark for pricing across the financial system, so a move in the benchmark ten-year yield ripples into loan rates, deposit rates and the valuation of every marked-to-market holding. A treasury therefore manages its SLR portfolio, its trading positions and its liquidity together, balancing return against interest-rate and liquidity risk. Linking investment classification to valuation, duration and the G-Sec market is exactly the joined-up understanding examiners reward, and our companion guide on investment classification and G-Sec valuation under RBI norms drills into the prudential detail.

A practical study plan for this topic

Theory alone will not carry you through a paper that is increasingly application-led. Use a short, deliberate plan instead.

1. Build the spine first. Learn the three categories and the one valuation rule attached to each until you can reproduce the comparison table from memory in under two minutes.
2. Layer on the risk metrics. Once the categories are automatic, add duration, modified duration, PV01 and VaR, and practise the standard appreciation-versus-depreciation provisioning sums.
3. Tie in the market. Connect the portfolio to G-Secs, the SLR and the risk-free yield so you can answer cross-topic questions that span accounting and markets.
4. Convert to scenarios. Attempt timed mocks where every concept arrives inside a short case, then review every wrong answer before moving on.

Browse the full set of explainers and revision notes for this paper on the complete TIRM guide library, and pair your reading with the broader treasury management guide covering forex, money market and ALM for context on where the investment book sits in the wider treasury.

Common mistakes to avoid

• Memorising definitions you cannot apply. The examiner routinely wraps HTM, AFS and FVTPL, the valuation rules and duration inside a short case. Practise translating each concept into a worked example rather than reciting it.
• Confusing the AFS reserve with the profit and loss route. AFS gains and losses sit in equity; only FVTPL and HFT flow through profit and loss. Mixing these up corrupts an entire numerical.
• Forgetting that HTM is insulated from rate moves. A favourite trap is asking how a yield rise hits an HTM holding, the answer is that it does not, because HTM is carried at cost.
• Misreading negatively phrased stems. Options such as "which is NOT marked to market" catch even strong candidates. Read each stem twice and flag the negative word.
• Ignoring recent regulatory changes. The paper increasingly tests the revised framework alongside core theory, so always sanity-check current rules against the latest IIBF notification and RBI direction.

Frequently asked questions

What are the three investment categories under the revised framework?

The three categories are Held to Maturity (HTM), Available for Sale (AFS) and Fair Value Through Profit and Loss (FVTPL). Under the revised RBI framework, Held for Trading (HFT) is treated as a sub-category of FVTPL. Classification now turns on the bank's business model for the security and the nature of its cash flows.

Are HTM securities marked to market?

No. HTM securities are carried at amortised acquisition cost and are not marked to market. Any premium over face value is written down over the remaining life of the security. This shields the bank's book value from interest-rate fluctuations and keeps reported earnings stable.

Where do AFS valuation gains and losses appear?

AFS securities are marked to market, but the resulting gains and losses are routed through a reserve in equity, often called the AFS reserve, rather than the profit and loss account. This lets the bank's capital reflect market movements without distorting reported profit. By contrast, FVTPL and HFT gains and losses flow straight through profit and loss.

What does duration measure, and why does it matter?

Duration measures a bond's price sensitivity to changes in interest rates, expressed roughly as the percentage change in price for a one-percent change in yield. A higher duration means a larger price swing for the same yield move. Treasuries use it to position the trading book, shortening duration when they expect rates to rise and lengthening it when they expect rates to fall.

How do rising interest rates affect bank investments?

Rising interest rates lower bond prices, which reduces the marked-to-market value of AFS and FVTPL holdings. AFS losses appear in the equity reserve, while FVTPL and HFT losses hit profit and loss directly. HTM securities are unaffected on the books because they are carried at amortised cost rather than market value.

How are G-Secs linked to the SLR and the rest of this topic?

Government securities make up most of a bank's investment portfolio and are the primary instruments used to meet the Statutory Liquidity Ratio. Their yields set the risk-free benchmark for pricing across the financial system, so movements in G-Sec yields drive the mark-to-market value of the AFS and FVTPL books. This is why classification, valuation, duration and the G-Sec market must be studied as one connected topic.

Conclusion

Investment classification in banks is the thread that ties together valuation, mark-to-market accounting, duration and the G-Sec market. Master which category is valued how, then layer on duration and the Basel market-risk charge, and the numerical questions stop feeling like guesswork. These distinctions surface in almost every TIRM session, so commit the comparison table to memory, practise applying it inside short cases, and confirm any time-sensitive figure against the official source before you sit the paper. Put in that focused work and this high-weightage topic becomes one of your surest sources of marks. For the authoritative regulatory position, you can also consult IIBF's official website.

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