Asset-Liability Management (ALM)

August 31, 2024 Risk Management

Asset-liability management coordinates a financial institution's balance sheet to control funding, liquidity, interest-rate, and earnings risk.

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Asset-liability management (ALM) is the coordinated management of a financial institution’s assets, liabilities, and off-balance-sheet positions to control funding, liquidity, interest-rate, and earnings risk. It connects balance-sheet strategy with risk appetite rather than managing loans, deposits, investments, borrowings, and hedges as separate portfolios.

Key Takeaways

ALM focuses on the interaction between both sides of the balance sheet.
Its central risks include repricing mismatch, yield-curve and basis risk, deposit behavior, prepayments, funding concentration, and liquidity stress.
Gap analysis is useful but incomplete; banks also use income simulations, economic-value measures, liquidity cash-flow forecasts, and stress tests.
A negative repricing gap does not automatically predict the bank’s actual profit because pricing behavior and embedded options can change the result.
ALM is a management process, while the asset-liability committee is a governance body that oversees it.

What ALM Coordinates

A bank typically earns a spread between asset yields and funding costs, but the cash flows do not reprice or mature at the same time.

Balance-sheet area	Examples	ALM question
Assets	Loans, securities, cash, derivatives receivable	When do yields reset, principal repay, or options change cash flow?
Liabilities	Deposits, wholesale funding, secured borrowing, debt	When can funding leave or reprice, and at what cost?
Off-balance-sheet positions	Commitments, swaps, options, guarantees	How can contingent draws or hedges change cash flow and sensitivity?
Capital and earnings	Equity, retained earnings, net interest income	How much rate and liquidity stress can the institution absorb?

ALM seeks an acceptable tradeoff, not a perfectly matched balance sheet. Eliminating every mismatch could be costly, impractical, or inconsistent with the institution’s role as a maturity and liquidity transformer.

Main ALM Risks

Repricing risk: assets and liabilities reset at different times.
Yield-curve risk: short-, medium-, and long-term rates move by different amounts.
Basis risk: linked rates do not move together, such as loan rates and deposit rates tied to different benchmarks.
Option risk: borrowers prepay, depositors withdraw, or contractual caps and floors change cash flows.
Funding liquidity risk: cash outflows exceed available cash and reliable funding.
Concentration risk: the institution depends heavily on one depositor type, market, maturity, product, or funding provider.
Model risk: behavioral assumptions about non-maturity deposits, prepayments, and pricing prove wrong.

These risks overlap. A rate increase can improve asset yield but also accelerate deposit repricing or runoff, creating both earnings and liquidity pressure.

Common ALM Measures

Measure	What it shows	Main limitation
Repricing gap	Rate-sensitive assets minus rate-sensitive liabilities within a time bucket	Misses basis risk, options, and nonlinear behavior
Net-interest-income simulation	Projected earnings under rate and balance-sheet scenarios	Depends on pricing, volume, and behavioral assumptions
Economic value of equity	Present-value sensitivity of assets, liabilities, and relevant off-balance-sheet positions	Model-dependent and not a cash forecast
Liquidity gap or cash-flow ladder	Inflows and outflows by horizon	Contractual dates may not reflect customer behavior
Liquidity Coverage Ratio	Standardized 30-day regulatory liquidity coverage	Does not capture every liquidity scenario
Net Stable Funding Ratio	Structural funding over a one-year horizon	Regulatory weights can differ from internal behavior

No single measure provides a complete ALM view. Earnings and economic-value measures are complementary, and regulatory ratios should be supplemented with internal stress analysis.

Repricing Gap and Negative Gap

A simple repricing gap is:

\text{Repricing Gap} = \text{Rate-Sensitive Assets} - \text{Rate-Sensitive Liabilities}

A negative gap means rate-sensitive liabilities exceed rate-sensitive assets in the selected bucket. In a simplified parallel-rate increase, funding cost may rise faster than asset income.

Assume a bank has, within a one-year repricing bucket:

$120 million of rate-sensitive assets
$170 million of rate-sensitive liabilities

\text{Gap} = \$120\text{m} - \$170\text{m} = -\$50\text{m}

Using a crude first-order approximation, a 1% rate increase produces:

\Delta \text{Annual Net Interest Income} \approx -\$50\text{m} \times 1\% = -\$0.5\text{m}

This is a screening estimate, not a forecast. Actual net interest margin also depends on deposit betas and lags, loan floors, prepayments, basis changes, new business, hedges, and customer migration.

ALM Process

Set risk appetite and limits. Define acceptable earnings, economic-value, liquidity, and concentration exposures.
Map cash flows and repricing. Include contractual and behavioral maturity, embedded options, and off-balance-sheet items.
Establish a base case. Project balance-sheet volumes, pricing, funding, and customer behavior.
Run scenarios. Test rate shocks, yield-curve changes, deposit runoff, collateral calls, market closure, and combined stress.
Evaluate responses. Consider pricing, funding tenor, securities, loan structure, deposits, derivatives, and contingency actions.
Approve and document action. Record decisions, owners, limits, timing, and expected impact.
Monitor outcomes. Compare actual behavior with assumptions and update models or limits.

Worked Management Example

A bank funds five-year fixed-rate loans with deposits that customers can withdraw at any time. Management expects most deposits to remain stable, but a stress test assumes faster runoff and higher deposit rates.

ALM analysis may lead the bank to:

lengthen part of its wholesale funding
adjust loan pricing or fixed-rate production limits
hold more unencumbered liquid assets
use interest-rate swaps within approved limits
revise deposit beta and decay assumptions
strengthen its contingency funding plan

Each action has costs and risks. A hedge can reduce rate sensitivity but add collateral, basis, counterparty, accounting, or operational risk.

ALM vs. Treasury and Risk Management

Function	Typical role
Treasury	Executes funding, investment, liquidity, and hedge transactions
ALM process	Measures balance-sheet interactions and recommends structure or limits
ALCO	Reviews exposures and approves or recommends actions within delegated authority
Independent risk management	Challenges assumptions, monitors limits, and provides independent oversight
Board or board risk committee	Approves risk appetite and oversees material risk

Exact responsibilities vary by institution. Clear authority and independent challenge matter more than a particular organization chart.

Common Mistakes and Limitations

Treating contractual deposit maturity as expected customer behavior.
Using one repricing gap as a complete measure of interest-rate risk.
Assuming all rates move in parallel and by the same amount.
Ignoring prepayments, early withdrawals, caps, floors, and customer options.
Modeling rate and liquidity stress separately when they can reinforce each other.
Assuming a hedge removes risk rather than changes its form.
Relying on regulatory ratios without internal cash-flow and stress analysis.
Failing to back-test deposit and prepayment assumptions.

Authoritative Sources

Asset-Liability Committee: The management committee commonly responsible for ALM oversight.
Economic Value of Equity: A present-value measure of banking-book interest-rate sensitivity.
Duration Gap: A duration-based estimate of asset-liability value sensitivity.
Liquidity Risk: The risk that obligations cannot be met when due without unacceptable loss.
Stress Testing: Adverse scenario analysis used to challenge ALM assumptions.

Educational Use

This page provides general financial education. It is not a balance-sheet strategy, hedge recommendation, liquidity plan, regulatory interpretation, or risk assessment for any institution.

Asset-Liability Committee (ALCO)

Economic Value of Equity (EVE)