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Financial Management · Hedging techniques for interest rate risk

Internal Hedging of Interest Rate Risk: Matching, Smoothing and Netting

Updated 11 October 2026 · Fact-checked

Internal hedging reduces interest rate risk without derivatives. Matching aligns the interest basis of assets and liabilities so rate changes offset. Smoothing spreads debt across fixed and floating, or across maturities. You also choose fixed or floating debt to suit your rate view and risk appetite. It is cheap but often only partial.

Understand Internal Hedging: Smoothing, Matching and Netting

Interest rate risk is the risk that a change in rates hurts your profit or cash flow. Floating-rate borrowing costs more when rates rise. Fixed-rate borrowing leaves you paying above market when rates fall. Floating-rate deposits earn less when rates fall.

Internal hedging means managing this risk using the company's own balance sheet and decisions. You do not buy a derivative such as an FRA, future, option or swap. The tools are free or low cost, but they cannot always remove the whole exposure.

Matching means lining up the interest basis of assets and liabilities. If you hold floating-rate deposits, fund them with floating-rate debt. If rates fall, interest income falls but so does interest cost. The effects offset. Matching can also mean timing: borrow for the same period you will hold the asset.

Smoothing means keeping a balanced mix of fixed and floating debt, or spreading maturities, so you are never fully exposed to one rate move. A firm with half fixed and half floating debt feels only part of any rate change. Spreading refinancing dates avoids having to refinance everything at a bad time.

Netting here means offsetting interest receipts against interest payments in the same currency or on the same basis, so only the net exposure remains. You then hedge or accept only the net amount. The choice between fixed and floating also depends on your view of rates, your cash flow stability and any covenants. Fixed gives certainty. Floating gives flexibility and benefit if rates fall.

Key rules to remember

Net interest exposure
Net exposure = floating-rate liabilities − floating-rate assets
A positive figure means you lose when rates rise. A negative figure means you lose when rates fall.
Change in annual interest cost
Change in cost = net floating exposure × change in rate
Use this to size the effect of a rate move. Apply the change in rate as a decimal.
Matching rule
Floating assets → floating liabilities; fixed assets → fixed liabilities
Aim to match both the rate basis and the period.
Fixed proportion of debt
Fixed % = fixed-rate debt ÷ total debt × 100
A smoothing policy often sets a target for this percentage.

How to solve Internal Hedging: Smoothing, Matching and Netting questions

Use this order for any internal hedging question, whether it is a Section A objective question, an OT case or a written Section C requirement.

  1. 1Identify which rates each asset and liability is tied to: fixed or floating, and the maturity.
  2. 2Calculate the net floating exposure: floating liabilities minus floating assets.
  3. 3Decide who loses from a rate rise and who loses from a fall. Name the direction clearly.
  4. 4Quantify the effect if asked: net exposure × rate change. Check the time period.
  5. 5Choose the internal tool: match, smooth the fixed/floating mix, spread maturities, or change the fixed or floating choice.
  6. 6Link the choice to the scenario: the company's rate view, cash flow stability and any covenants.
  7. 7State the limits: internal hedging is often partial and may carry costs, such as early repayment penalties or higher fixed rates.
  8. 8Where relevant, say when a derivative would be needed instead.

Quickest way: Net exposure shortcut

When to use it: Use this for Section A and OT case questions that give balances and ask who gains or loses if rates move.

  1. Write floating assets and floating liabilities as two numbers.
  2. Subtract to get the net floating position. Ignore fixed items for rate-change effects.
  3. Multiply by the rate change for the annual effect.
  4. Net floating liability means a rate rise hurts. Net floating asset means a rate fall hurts.
  5. Pick the answer that matches or smooths the position with no derivative.

Common mistakes in Internal Hedging: Smoothing, Matching and Netting

  • Including fixed-rate balances in the exposure calculation.

    Students add up all debt without checking the rate basis.

    Fix: Only floating-rate items change cost when rates move. Exclude fixed items from the change calculation.

  • Confusing matching with smoothing.

    Both reduce exposure and the terms sound similar.

    Fix: Matching pairs assets with liabilities on the same basis. Smoothing blends fixed and floating debt or spreads maturities.

  • Saying fixed-rate debt removes all risk.

    Certainty of payments feels like no risk.

    Fix: Fixed debt carries an opportunity cost if rates fall, and refinancing risk at maturity. Say so.

  • Getting the direction wrong for a net floating asset position.

    Students assume a rate rise always hurts.

    Fix: A net floating asset position gains when rates rise and loses when they fall. Check which side is larger.

  • Recommending a derivative when the question asks for internal methods.

    Students recall FRAs and swaps more readily.

    Fix: Read the requirement. Only mention derivatives as a limit or alternative after giving the internal method.

Worked examples

Example 1

A company has floating-rate bank loans of $8 million and floating-rate deposits of $3 million. It also has $5 million of fixed-rate bonds. Interest rates are expected to rise by 1 percentage point. Calculate the effect on annual net interest cost, and state one internal action.

Show the solution
  1. Only floating items matter. Floating liabilities are $8 million and floating assets are $3 million.
  2. Net floating liability = 8 − 3 = $5 million.
  3. Annual effect = 5,000,000 × 1% = $50,000.
  4. A rate rise increases the net cost, because there is a net floating liability.
  5. Internal action: replace part of the floating loan with fixed-rate debt, or hold more floating deposits to match the loan.

Answer: Net interest cost rises by $50,000 a year. The company can reduce the exposure by moving some floating debt to fixed, or by matching more floating deposits against the loan.

Example 2

A firm has $10 million of debt, all floating. Its board wants to reduce risk by smoothing. It converts 60% of the debt to fixed-rate before rates fall by 2 percentage points. Calculate the annual interest saving from the fall under the 60% fixed policy, and compare it with the saving if all the debt had stayed floating. Explain the trade-off.

Show the solution
  1. Fixed debt after smoothing = 60% × 10 million = $6 million. Floating debt = $4 million.
  2. If all floating, a 2% fall saves 10,000,000 × 2% = $200,000.
  3. With smoothing, only floating debt benefits: 4,000,000 × 2% = $80,000.
  4. Saving given up by fixing = 200,000 − 80,000 = $120,000.
  5. Trade-off: the firm loses part of the gain when rates fall, but is protected by the same proportion if rates rise.

Answer: With 60% fixed, the saving is $80,000 a year instead of $200,000. Smoothing gives up $120,000 of the gain in return for protection against rate rises on $6 million of debt.

Exam tips

  • Read the requirement for the words internal, non-derivative or without derivatives. Then do not answer with FRAs or swaps.
  • In Section A, compute the net floating position first. Most calculations follow from it.
  • In Section C, use short headed points: method, how it works, limits. Always apply it to the company in the scenario.
  • Always state the direction of the effect: who gains and who loses if rates rise.
  • Mention a limit of internal hedging, such as partial cover or loss of flexibility, to earn the evaluation mark.

Practice questions from Hedging techniques for interest rate risk

Internal Hedging: Smoothing, Matching and Netting in other exams

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

Internal Hedging: Smoothing, Matching and Netting: frequently asked questions

What is the difference between matching and smoothing?

Matching pairs assets and liabilities on the same rate basis, so changes offset. Smoothing blends fixed and floating debt, or spreads maturities, so you are never fully exposed to one move.

Can I hedge interest rate risk without derivatives?

Yes, partly. You can match floating assets with floating debt, keep a mix of fixed and floating borrowing, and spread refinancing dates. This is cheap but may not cover the full exposure.

When should a company choose fixed rather than floating debt?

Fixed suits a company that expects rates to rise above the fixed rate on offer, or that needs certain cash flows, for example where gearing or interest cover covenants are tight. Floating suits a company that expects rates to fall or that needs flexibility, such as being able to repay early. Remember that the fixed rate on offer already reflects what the market expects, so your view must differ from it to justify the choice.

What does netting mean in interest rate hedging?

It means offsetting interest receipts against interest payments on the same basis, so only the net exposure is left. You then manage or hedge that net amount.