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Advanced Financial Management · Interest Rate Risk Management

Interest Rate Risk and Its Types for CA Final AFM

Updated 5 October 2026 · Fact-checked

Interest rate risk is the chance that changes in market interest rates reduce your income, cash flows or value of assets and liabilities. Identify the source (price, reinvestment, basis, yield curve, repricing), quantify the gap or exposure, then choose a hedge: matching, FRAs, futures, swaps or options.

Understand Interest Rate Risk and Its Types

Interest rate risk is the risk that a firm's earnings or the value of its assets and liabilities change because market interest rates move. Every borrower, lender, bank and bond investor has it. You cannot remove rates from the economy, so you measure the exposure and then decide how much to keep.

The risk shows up in different ways, and the exam asks you to name the type from a case. Price risk (market value risk): when rates rise, the price of existing fixed-rate bonds falls. Reinvestment risk: when rates fall, coupons and maturity proceeds must be reinvested at lower rates. These two pull in opposite directions. Rising rates hurt price but help reinvestment. Falling rates raise price but hurt reinvestment.

Basis risk arises when your asset and liability are both floating but linked to different benchmarks, for example a loan priced on one reference rate and funded by deposits priced on another. The two rates do not move together, so the spread you expected changes. A hedge can also carry basis risk if the hedging instrument's reference rate differs from the exposure.

Yield curve risk arises when the shape of the yield curve changes, such as a steepening, flattening or twist, so that short and long rates move by different amounts. A position hedged for a parallel shift can still lose. Repricing (gap) risk arises when assets and liabilities reprice at different times, for example a bank funding long fixed-rate loans with short-term deposits. Call or prepayment risk arises when borrowers repay early after rates fall, forcing reinvestment at lower rates.

Management approaches are broad. Internally: match the repricing profile of assets and liabilities, choose between fixed and floating debt, and use gap or duration analysis. Externally: use derivatives such as forward rate agreements, interest rate futures, swaps, caps, floors and collars. The right choice depends on whether you want to lock a rate fully or keep some benefit from favourable moves.

Key rules to remember

Repricing gap
Gap = Rate Sensitive Assets (RSA) − Rate Sensitive Liabilities (RSL)
Measured for each time bucket. Positive gap means income rises when rates rise.
Change in net interest income
ΔNII ≈ Gap × Δi
Δi is the change in interest rate in decimal. Valid for the bucket over the period considered, assuming the rate change applies for the full period.
Price effect of rate change
ΔP ≈ −Modified Duration × Δy × P
Approximation for small changes in yield. Rates up, price down.
Direction of the two bond risks
Rates ↑: price ↓, reinvestment income ↑. Rates ↓: price ↑, reinvestment income ↓
Use this to classify the risk named in a case.
Basis
Basis = Rate A − Rate B (two different benchmarks)
Basis risk is the risk that this difference changes.

How to solve Interest Rate Risk and Its Types questions

Use this order for any theory or case question on interest rate risk.

  1. 1Read the case and list the assets, liabilities or investments, and whether each is fixed or floating.
  2. 2Note the benchmark for each floating item and the date it resets.
  3. 3Identify which rate move hurts you: a rise or a fall.
  4. 4Name the risk type: price, reinvestment, basis, yield curve or repricing gap. Give a one-line reason from the facts.
  5. 5If numbers are given, compute the gap or the effect on interest cost or income using the rate change and the period.
  6. 6Recommend a management approach: internal matching first, then the derivative that fits (FRA, futures, swap, cap, floor or collar).
  7. 7State any residual risk, such as basis risk in the hedge, and conclude.

Quickest way: Direction test for classifying the risk

When to use it: Use in MCQs and short case questions where you must name the risk in under a minute.

  1. Ask: fixed or floating on each side?
  2. Fixed-rate bond held and rates rise: price risk.
  3. Coupons or maturity proceeds to be reinvested and rates fall: reinvestment risk.
  4. Both sides floating but on different benchmarks: basis risk.
  5. Short and long rates move differently: yield curve risk.
  6. Assets and liabilities reset on different dates: repricing gap risk.

Common mistakes in Interest Rate Risk and Its Types

  • Treating basis risk and reinvestment risk as the same thing.

    Both involve floating or changing rates, so they look alike.

    Fix: Basis risk is about two different benchmarks moving unequally. Reinvestment risk is about reinvesting cash flows at a lower rate.

  • Saying a rate rise is bad for every bond holder.

    Students remember only the price fall.

    Fix: A rise lowers price but raises reinvestment income. Which dominates depends on the holding period and duration.

  • Confusing yield curve risk with a simple parallel rate change.

    Both are described as rates moving.

    Fix: Yield curve risk is about a change in shape or slope, with different tenors moving by different amounts.

  • Getting the sign of the gap effect wrong.

    Students apply Gap × Δi without checking whether the gap is positive or negative.

    Fix: Positive gap gains when rates rise and loses when they fall. Negative gap is the opposite.

  • Recommending a derivative without stating the exposure first.

    Students jump to swaps or FRAs from memory.

    Fix: First state which rate move hurts and for what period, then match the instrument to that exposure.

  • Ignoring that a hedge can leave residual risk.

    Hedging is assumed to remove all risk.

    Fix: Mention basis risk, mismatch of dates or amounts, and cost of the hedge in your conclusion.

Worked examples

Example 1

A finance company has rate sensitive assets of ₹80 crore and rate sensitive liabilities of ₹100 crore in the 0 to 1 year bucket. Interest rates are expected to rise by 1% (100 basis points) for the whole year. Find the gap, the expected change in net interest income and state the risk and a suitable response.

Show the solution
  1. Gap = RSA − RSL = 80 − 100 = −₹20 crore.
  2. ΔNII ≈ Gap × Δi = −20 × 0.01 = −₹0.20 crore.
  3. The gap is negative, so more liabilities than assets reprice within the year. A rate rise increases funding cost more than income.
  4. The risk is repricing (gap) risk.
  5. Response: shift some liabilities to fixed rate or longer tenor, increase floating-rate assets, or use a pay-fixed interest rate swap or buy a cap on the floating liabilities.

Answer: Gap is −₹20 crore. Net interest income falls by about ₹0.20 crore (₹20 lakh). It is repricing gap risk, managed by matching repricing or by a pay-fixed swap or cap.

Example 2

Company A has a ₹50 crore loan at a floating rate linked to Benchmark X, resetting every six months. It funds the entire loan with deposits priced on Benchmark Y, also floating, for the full year. The spread X − Y was 2.5% earlier. Now X − Y has narrowed to 1.8%, and assume this 1.8% spread applies for the whole year. Identify the risk and compute the effect on annual spread income.

Show the solution
  1. Both sides are floating, but on different benchmarks. This is basis risk.
  2. Assumption: the entire ₹50 crore is funded by Y-linked deposits for the full year, and the 1.8% spread applies for the whole year.
  3. Spread fell from 2.5% to 1.8%, a fall of 0.7% (0.007 in decimal).
  4. Effect on annual income = ₹50 crore × 0.007 = ₹0.35 crore.
  5. Management: link borrowing and lending to the same benchmark where possible, or use a basis swap to exchange one floating rate for the other.

Answer: This is basis risk. Under the stated assumptions, annual spread income falls by ₹0.35 crore (₹35 lakh). Reduce it by matching benchmarks or using a basis swap.

Exam tips

  • In case-scenario MCQs, name the risk from the direction test before reading the options.
  • In written answers, define the risk in one line, apply it to the facts, then conclude with the hedge. This is the provision-facts-conclusion pattern.
  • Always show the sign of the gap and what it means for income.
  • Mention that hedges carry costs and may leave residual basis risk. Examiners reward this.
  • Learn the instrument details in the separate FRA, futures, swap and option topics, because numerical questions are built on them.

Practice questions from Interest Rate Risk Management

Interest Rate Risk and Its Types in other exams

The same ground in other exams, if you are preparing for more than one or want another angle on it.

Interest Rate Risk and Its Types: frequently asked questions

What are the main types of interest rate risk for CA Final AFM?

The main types are price risk, reinvestment risk, basis risk, yield curve risk and repricing (gap) risk. Call or prepayment risk is also mentioned. Classify each from the case facts.

What is the difference between basis risk and reinvestment risk?

Basis risk comes from two floating rates linked to different benchmarks moving by different amounts. Reinvestment risk comes from having to reinvest coupons or proceeds at a lower rate than expected. One affects the spread, the other affects reinvestment income.

How is interest rate risk managed?

Internally, you match the repricing of assets and liabilities and choose fixed or floating borrowing wisely. Externally, you use FRAs, interest rate futures, swaps, caps, floors and collars. The choice depends on the exposure and how much upside you want to keep.

Does a rate rise always hurt a bond investor?

No. Existing fixed-rate bond prices fall, but coupons can be reinvested at higher rates. The net effect depends on duration and the holding period.