Treasury, Liquidity and Asset–Liability Management

Introduction and context

A bank is structurally exposed to liquidity, interest-rate and foreign-exchange risk because it transforms maturities, currencies and contractual cash flows. It may fund long-term loans with short-term deposits, hold fixed-rate assets against floating-rate liabilities, and operate in several currencies. These transformations generate earnings, but they also create the possibility that funding becomes unavailable, margins decline, or capital is impaired.

The treasury is the bank’s central financial-management function. It manages cash and high-quality liquid assets, wholesale funding, market positions, interest-rate and currency exposures, regulatory liquidity ratios, collateral and the internal allocation of funding costs. Asset–liability management (ALM) is the broader governance framework through which the bank identifies and controls mismatches between assets, liabilities and off-balance-sheet positions.

Treasury is not simply a trading desk. Its decisions must be consistent with the bank’s risk appetite, capital capacity, liquidity strategy, customer franchise and regulatory obligations. A profitable position can nevertheless be unacceptable if it creates excessive liquidity risk or depends on assumptions that fail during stress.

Learning objectives

By the end of this chapter, the reader should be able to:

1. Explain treasury’s role, funding strategy and liquidity governance.
2. Construct and interpret contractual and behavioural liquidity gaps.
3. Analyse interest-rate exposure using repricing gaps, duration and economic-value measures.
4. Explain foreign-exchange exposure and evaluate hedging alternatives.
5. Describe funds-transfer pricing (FTP) and its use in product and performance management.
6. Design stress scenarios and interpret contingency funding actions.
7. Evaluate treasury decisions from profitability, risk, governance and regulatory perspectives.

1. Treasury architecture and funding strategy

1.1 Core responsibilities

A typical bank treasury performs five connected functions:

• Funding and liquidity management: ensuring that obligations can be paid when due.
• Balance-sheet management: managing the composition, maturity and currency of assets and liabilities.
• Market-risk management: controlling interest-rate, foreign-exchange and sometimes commodity or equity exposures.
• Collateral management: ensuring that assets are available and eligible for secured funding or margin calls.
• Financial control and transfer pricing: measuring the economic cost and benefit of business-unit decisions.

The asset–liability committee (ALCO), normally chaired by a senior executive, sets policies and limits. Treasury executes approved strategies. Risk management independently measures exposure, challenges assumptions and reports breaches. The board approves risk appetite and receives escalation reports. Internal audit assesses whether the framework operates effectively.

1.2 Funding sources

Bank funding can be classified by stability, maturity, concentration and encumbrance:

A sound funding strategy seeks diversification across depositors, markets, maturities, instruments, currencies and counterparties. Diversification is not achieved merely by having many instruments; exposures may remain concentrated if they depend on the same investor base or market convention.

1.3 Structural liquidity versus tactical liquidity

Structural liquidity concerns the stable funding profile over months and years. It includes the maturity of loans, securities, deposits, debt issuance and capital. Tactical liquidity concerns daily and intraday payment capacity, collateral movements, settlement obligations and unexpected cash calls.

Liquidity is multidimensional. A bank can be solvent but illiquid if its assets exceed liabilities in present value but cannot be converted to cash quickly without unacceptable loss. Conversely, a bank can be liquid temporarily while economically insolvent. Treasury therefore coordinates with capital management rather than treating liquidity as a substitute for solvency.

2. Liquidity measurement and gap analysis

2.1 Contractual cash-flow gap

A simple liquidity gap for time bucket t is:

where G_t is the net cash-flow gap in currency units, I_t is expected contractual inflows and O_t is expected contractual outflows in bucket t. A negative gap means that outflows exceed inflows. The cumulative gap through bucket T is:

This calculation is useful for identifying refinancing needs, but it is not a forecast of actual behaviour. It assumes that contractual cash flows occur as specified and does not automatically include market-value losses, collateral calls or new business.

2.2 Worked example: liquidity ladder

Assume the following simplified cash flows, stated in millions of currency units:

The cumulative gaps are −40, −20 and 10 respectively. The bank therefore needs at least 40 million of usable liquidity to cover the first bucket, subject to buffers for uncertainty and stress. The later positive gaps cannot automatically fund the first bucket because timing, asset liquidity and market access differ.

2.3 Behavioural modelling

Contractual maturity is often a poor description of banking products. Demand deposits have no contractual maturity, yet a portion may remain for years. Mortgage prepayments shorten assets when rates fall, while fixed-rate borrowers may refinance. Credit commitments may be undrawn in normal conditions but drawn heavily during stress.

Behavioural models estimate:

• deposit stability and runoff rates;
• renewal rates for maturing deposits;
• loan prepayments and early repayments;
• utilisation of committed credit lines;
• collateral haircuts and margin requirements; and
• intraday payment patterns.

Models require segmentation, historical data, expert judgement and conservative validation. A stable average during calm periods can become an unsafe assumption during a confidence event. Model risk is therefore managed through back-testing, sensitivity analysis, independent validation and override governance.

2.4 Liquidity buffers and regulatory indicators

A liquidity buffer normally contains cash, central-bank reserves and high-quality liquid assets that can be monetised rapidly with limited loss. The buffer should be unencumbered and operationally available, not merely present on the balance sheet.

A common short-term regulatory measure is the Liquidity Coverage Ratio:

where HQLA means high-quality liquid assets and net cash outflows reflect prescribed stress assumptions. The ratio is a regulatory measure, not a complete liquidity strategy. It does not replace longer-horizon funding analysis, intraday monitoring or institution-specific stress testing.

The Net Stable Funding Ratio uses a longer structural horizon:

The exact classifications, weights and minimum requirements depend on the applicable jurisdiction and regulatory framework. Analysts must therefore consult current rules rather than assume that a textbook ratio is legally complete.

3. Interest-rate risk in the banking book

3.1 Sources of exposure

Interest-rate risk arises when changes in rates affect net interest income, market value, capital or customer behaviour. Important sources include:

• repricing mismatch between rate-sensitive assets and liabilities;
• basis risk when instruments reference different rates;
• yield-curve risk when maturities respond differently;
• option risk from caps, floors, prepayments and non-maturity deposits; and
• imperfect hedging or model assumptions.

A bank may have a positive short-term repricing gap and still lose value if long-term rates rise sharply, because the economic value of fixed-rate assets declines. Conversely, a short-term earnings measure and a long-term economic-value measure may point in different directions.

3.2 Repricing gap and net interest income sensitivity

For a time bucket, the repricing gap is:

where RSA_t is rate-sensitive assets repricing in bucket t and RSL_t is rate-sensitive liabilities repricing in that bucket. A simplified parallel rate-change approximation for net interest income over a horizon is:

where ∆r_t is the assumed change in annual interest rates expressed as a decimal, and h_t is the number of days in the measurement horizon. The formula assumes that the gap remains constant, repricing is immediate at the relevant reset date, balances do not change, and basis and behavioural effects are ignored. It is therefore a first-order approximation.

Example. If rate-sensitive assets exceed liabilities by 50 million for 90 days and rates rise by 1 percentage point, then:

∆NII ≈ 50,000,000 × 0.01 × 90/365 = 123,288

The estimated increase in net interest income is approximately 123,288, before tax and before behavioural, basis or credit effects.

3.3 Duration and economic value

Duration measures the sensitivity of a fixed-income instrument’s price to yield changes. Macaulay duration is the present-value-weighted average time to receive cash flows:

where CF_t is the cash flow at time t (in years), y is the yield per period, n is the number of periods and P is the present price. Modified duration for annual compounding is:

For a small parallel yield change, the price approximation is:

The approximation assumes a small yield change, a parallel shift, unchanged cash flows and no material convexity. For larger shifts, convexity should be included:

where C is convexity measured consistently with the duration convention.

3.4 Duration gap

At balance-sheet level, a simplified duration-gap measure is:

where D_A and D_L are the durations of assets and liabilities, and A and L are their market values. If assets are 1,000 million with duration 4 years, liabilities are 900 million with duration 2 years, then:

DG = 4 − (900/1000)×2 = 2.2 years

A positive duration gap generally implies that an increase in rates reduces the economic value of equity, although the result depends on cash-flow conventions, convexity, embedded options and the treatment of deposits and equity.

3.5 Hedging interest-rate risk

Common instruments include interest-rate swaps, futures, forward-rate agreements, caps, floors, swaptions and government securities. A fixed-rate asset funded by floating-rate liabilities can be hedged by receiving fixed and paying floating in a swap, depending on the exposure definition and benchmark. The hedge decision must consider notional amount, maturity, reset dates, basis, collateral, counterparty credit risk, accounting treatment and liquidity under stress.

Hedging is not automatically risk reducing. A hedge can introduce basis risk, margin calls, collateral liquidity needs or replacement risk if the counterparty defaults. The appropriate objective may be to stabilise net interest income, economic value, capital, or a combination; these objectives can require different hedge ratios.

4. Foreign-exchange exposure

4.1 Types of exposure

A bank’s foreign-exchange exposure may be:

• transaction exposure: contractual foreign-currency receipts or payments;
• translation exposure: conversion of foreign subsidiaries’ financial statements;
• economic exposure: longer-term effects of exchange rates on competitiveness and cash flows; and
• trading exposure: deliberate positions held for market-making or client facilitation.

The net open position in a currency is broadly the difference between foreign-currency assets, liabilities and off-balance-sheet positions, subject to local regulatory definitions. A long position gains when the currency appreciates against the reporting currency; a short position gains when it depreciates.

4.2 Hedging decisions

A bank may use spot transactions, forwards, swaps, futures or options. A forward hedge can lock the reporting-currency value of a known foreign-currency cash flow, but it creates counterparty and rollover considerations. An option provides protection while retaining upside, but requires an upfront premium or an economically equivalent cost. Cross-currency swaps can exchange principal and interest cash flows over a longer term, but create basis, funding, collateral and counterparty risks.

Foreign-exchange risk should be assessed jointly with interest-rate risk. A cross-currency swap can hedge currency exposure while creating exposure to two interest-rate curves and a cross-currency basis. Treasury should identify the risk being hedged, select an instrument whose sensitivity matches it, document effectiveness criteria and monitor residual exposures.

5. Funds-transfer pricing

5.1 Purpose and principles

FTP allocates the economic funding cost and liquidity benefit of transactions to business units. It allows management to distinguish customer margin from the cost of funding, liquidity, capital and optionality. Without FTP, a lending unit may appear profitable because it receives cheap internal funding, while a deposit unit may appear unprofitable despite generating valuable stable liquidity.

A robust FTP framework generally includes:

1. a reference curve appropriate to the currency and tenor;
2. funding liquidity and term premiums;
3. optionality costs or benefits;
4. credit and capital charges where management policy requires them;
5. transparent treatment of non-maturity deposits; and
6. independent governance and periodic recalibration.

A simplified product contribution can be expressed as:

This is a management-accounting identity, not a universal statutory-profit formula. The components must be defined consistently and must not double-count costs.

5.2 Matched-maturity FTP

Under matched-maturity FTP, a business unit receives or pays an internal price corresponding to the maturity and repricing characteristics of its cash flows. A five-year fixed-rate loan should not normally be priced using an overnight funding rate merely because the bank currently funds itself cheaply overnight. The approach improves product pricing, transfer of interest-rate risk to treasury and strategic decision-making.

The method becomes difficult for non-maturity deposits and products with behavioural options. A deposit may be assigned a replicating portfolio based on expected persistence, with conservative floors, decay rates and stress adjustments. Because the model affects reported profitability, governance and validation are essential.

6. Stress testing and contingency funding

6.1 Scenario design

Liquidity stress testing should combine institution-specific and market-wide events. Examples include:

• rapid retail deposit runoff;
• loss of unsecured wholesale funding;
• credit-rating downgrade and collateral calls;
• decline in the value or eligibility of securities;
• large drawdown of committed facilities;
• operational or cyber disruption;
• adverse interest-rate and foreign-exchange movements; and
• simultaneous market-wide and idiosyncratic stress.

A scenario should state assumptions, time horizon, management actions, asset-sale haircuts, collateral eligibility, legal-entity constraints and feedback effects. Stress tests should not assume that every asset can be sold immediately at book value.

6.2 Contingency funding plan

A contingency funding plan specifies early-warning indicators, escalation levels, decision rights, communication protocols and funding actions. Actions may include retaining earnings, increasing secured borrowing, selling liquid securities, raising term funding, limiting asset growth, repricing products, drawing committed facilities or accessing central-bank operations where eligible.

The plan must be operational. It should identify which assets are unencumbered, where they are held, how they can be transferred, who can approve transactions and how settlement will occur. A plan that exists only in policy documents is not a credible liquidity defence.

7. Illustrative case: Meridian Bank’s balance-sheet decision

This is a fictional illustrative case. Meridian Bank has 10 billion in assets and 9.2 billion in liabilities. It holds a large portfolio of fixed-rate mortgages funded partly by short-term deposits and three-month wholesale borrowing. Its treasury reports the following conditions:

• a 30-day contractual liquidity gap of −450 million;
• deposits showing high stability in normal periods but concentration among ten corporate clients;
• a positive duration gap of 1.8 years;
• a net long position of 120 million in a foreign currency;
• wholesale funding maturities clustered within six months; and
• a regulatory liquidity ratio above its minimum but below the board’s internal target.

Problem

The bank must preserve earnings while reducing the probability that a market shock forces asset sales at distressed prices. Management is considering issuing long-term debt, entering an interest-rate swap, reducing the foreign-currency position and holding additional liquid securities.

Analysis

The negative short-term gap is not solved by the positive one-year gap because near-term obligations arrive first. Corporate-deposit concentration creates correlated runoff risk. The positive duration gap means that a rate increase can reduce the economic value of equity. The foreign-currency position creates losses if the currency depreciates against the reporting currency. Issuing long-term debt may reduce refinancing risk but increases funding cost. Additional liquid securities improve resilience but may reduce yield.

Approach

ALCO approves a package rather than a single trade:

1. issue staggered medium-term funding to reduce maturity concentration;
2. retain a larger unencumbered HQLA buffer than the regulatory minimum;
3. establish a deposit-retention and client-concentration limit;
4. hedge a defined portion of the duration exposure with a swap, subject to basis and collateral limits;
5. hedge the foreign-currency position using a forward programme matched to the underlying exposure; and
6. run combined stress tests including deposit runoff, collateral calls and adverse rates.

FTP is recalibrated so that mortgage pricing reflects term funding and liquidity costs. Treasury is not permitted to treat the hedge as successful solely because its notional equals the exposure; sensitivity, maturity and basis must also be matched.

Outcome and learning points

The package reduces refinancing concentration and market sensitivity but does not eliminate risk. Funding becomes more expensive, and derivatives create collateral requirements. The case demonstrates that treasury decisions are portfolio decisions: liquidity, interest-rate risk, foreign exchange, profitability and capital interact. A regulatory minimum is a floor, not an optimal target, and hedging must be evaluated under both normal and stressed conditions.

8. Governance, regulation, technology and ethics

Effective ALM requires clear separation between risk-taking, risk measurement, valuation and control. Limit structures should cover liquidity gaps, survival horizons, concentrations, market values, open currency positions, duration, basis risk, stress losses, collateral and counterparty exposure. Breaches should trigger timely escalation rather than retrospective explanation.

Regulatory frameworks commonly require liquidity buffers, stable funding, market-risk controls, governance, disclosure and recovery planning. Requirements vary by jurisdiction and change over time; institutions must map internal policies to current rules and supervisory guidance.

Technology supports intraday cash forecasting, collateral optimisation, scenario engines, behavioural modelling and dashboard reporting. Artificial intelligence can assist anomaly detection and cash-flow forecasting, but it does not remove model risk. AI systems require explainability appropriate to the use case, data-quality controls, drift monitoring, privacy protection, human approval and documented override processes. A model that predicts stable deposits from historical calm-period data may systematically understate runoff during a crisis.

Ethically, treasury must avoid misleading internal profitability measures, concealment of liquidity stress, inappropriate transfer of risk to less-informed customers and excessive reliance on public support. Senior management is responsible for ensuring that incentives reward risk-adjusted performance rather than short-term reported income alone.

9. Best-practice decision framework

Before approving a treasury transaction, managers should ask:

1. What precise risk is being reduced: cash-flow risk, earnings volatility, economic-value risk, capital risk or regulatory risk?
2. What assumptions determine the exposure, and how reliable are they under stress?
3. Does the hedge match currency, maturity, reset date, notional, optionality and basis?
4. What new liquidity, collateral, counterparty or legal risks does it create?
5. How does FTP reflect the transaction’s funding and liquidity consequences?
6. Can the position be unwound during market disruption?
7. Are accounting results, economic results and regulatory results being distinguished?
8. Who owns the decision, who independently challenges it and what limit applies?

The best treasury practice is therefore integrated rather than product-specific. The objective is not to minimise every risk, since doing so may destroy the bank’s intermediation function, but to take risks deliberately, price them appropriately and maintain the capacity to survive adverse conditions.

Chapter Summary

Treasury manages a bank’s funding, liquidity, balance-sheet structure, market exposures, collateral and internal financial prices. ALM identifies mismatches between assets, liabilities and off-balance-sheet positions and connects those mismatches to earnings, economic value, capital and regulatory constraints. Contractual liquidity gaps provide an initial cash-flow map, while behavioural assumptions are needed for deposits, prepayments and commitments. LCR and NSFR are important regulatory indicators but do not replace institution-specific buffers and stress testing.

Interest-rate risk can be analysed through repricing gaps, net-interest-income sensitivity, duration and economic-value measures. Duration approximations are useful only within their assumptions and should be supplemented by convexity, basis and option analysis. Foreign-exchange exposure may arise from transactions, translation, economic activity or trading, and hedges must be assessed for residual interest-rate, basis, collateral and counterparty risks. FTP assigns funding and liquidity economics to business units, improving product pricing and accountability. Finally, credible contingency funding plans, strong governance, validated models and ethical incentives are essential to resilient treasury management.

Key Terms

Treasury: Central function managing funding, liquidity, market exposures and financial resources.

Asset–liability management: Framework for managing mismatches between assets, liabilities and off-balance-sheet positions.

ALCO: Senior committee responsible for balance-sheet and risk decisions.

Liquidity risk: Risk that obligations cannot be met when due without unacceptable loss.

Contractual liquidity gap: Difference between contractual inflows and outflows in a time bucket.

Behavioural maturity: Estimated effective maturity based on customer and market behaviour.

HQLA: High-quality liquid assets that can be monetised rapidly with limited loss.

LCR: Short-term liquidity measure comparing HQLA with stressed 30-day net cash outflows.

NSFR: Structural liquidity measure comparing available stable funding with required stable funding.

Repricing gap: Rate-sensitive assets minus rate-sensitive liabilities in a specified bucket.

Basis risk: Risk that related interest rates or prices do not move together.

Duration: Measure of sensitivity of a bond or portfolio value to yield changes.

Convexity: Second-order sensitivity of price to yield changes.

Duration gap: Difference between asset duration and liability-duration weighted by balance-sheet proportions.

Foreign-exchange exposure: Sensitivity to changes in exchange rates.

Funds-transfer pricing: Internal allocation of funding, liquidity and related balance-sheet costs and benefits.

Collateral: Asset pledged to secure borrowing or derivative obligations.

Stress test: Analysis of outcomes under severe but plausible assumptions.

Contingency funding plan: Predefined framework for responding to liquidity stress.

Model risk: Risk of adverse decisions arising from incorrect models, data or implementation.

Review Questions

Short Answer Questions

1. Distinguish structural liquidity from tactical liquidity.
2. What does a negative cumulative liquidity gap indicate?
3. State the main assumptions behind the duration price approximation.
4. Why is FTP important for a lending business unit?
5. Identify two sources of foreign-exchange exposure in a bank.

Long Answer Questions

1. Explain treasury’s responsibilities and its relationship with ALCO, risk management and the board.
2. Discuss contractual and behavioural liquidity analysis, including the limitations of each.
3. Explain how repricing gaps and duration provide different perspectives on interest-rate risk.
4. Evaluate the advantages and limitations of derivatives as interest-rate and foreign-exchange hedges.
5. Describe the design features of an effective contingency funding plan.

Analytical / Application Questions

1. A bank has rate-sensitive assets of 700 million and rate-sensitive liabilities of 820 million repricing for 60 days. Estimate the first-order change in net interest income if rates rise by 2 percentage points. State your assumptions and interpret the result.
2. A bank’s assets are 2,000 million with duration 3.5 years, while liabilities are 1,800 million with duration 1.5 years. Calculate the simplified duration gap and explain the likely effect of a parallel rate increase on economic value.
3. Design a funding and hedging response for a bank facing a 30-day deposit runoff, concentrated wholesale maturities, a positive foreign-currency position and a positive duration gap. Explain the trade-offs and governance controls required.

Multiple Choice Questions with Answers

Question 1

Which function is most directly responsible for ensuring that obligations can be paid when due?

A. Liquidity management

B. Equity research

C. Credit origination only

D. Financial statement formatting

Correct Answer: A. Liquidity management

Question 2

If inflows are 80 million and outflows are 120 million in a time bucket, the net liquidity gap is:

A. 40 million

B. −40 million

C. 200 million

D. −200 million

Correct Answer: B. −40 million

Question 3

A positive repricing gap generally means that, under the simplified model, a rate increase will:

A. Reduce net interest income immediately

B. Increase net interest income over the relevant repricing horizon

C. Have no effect on income

D. Eliminate liquidity risk

Correct Answer: B. Increase net interest income over the relevant repricing horizon

Question 4

The simplified duration price relationship is best represented by:

A. ∆P/P ≈ D_mod × ∆y

B. ∆P/P ≈ −D_mod × ∆y

C. ∆P/P ≈ ∆y/D_mod

D. ∆P/P ≈ D_mod + ∆y

Correct Answer: B. ∆P/P ≈ −D_mod × ∆y

Question 5

Which item is normally included in the numerator of the LCR?

A. High-quality liquid assets

B. Long-term operating expenses

C. Risk-weighted assets

D. Common equity dividends

Correct Answer: A. High-quality liquid assets

Question 6

Matched-maturity FTP primarily seeks to:

A. Price all loans using the overnight rate

B. Allocate funding economics according to the maturity and repricing of cash flows

C. Remove all credit risk from lending

D. Guarantee a profit for every product

Correct Answer: B. Allocate funding economics according to the maturity and repricing of cash flows

Question 7

A bank that is long a foreign currency will generally lose, all else equal, if that currency:

A. Appreciates against the reporting currency

B. Depreciates against the reporting currency

C. Has unchanged value

D. Has lower domestic interest rates only

Correct Answer: B. Depreciates against the reporting currency

Question 8

Which is a limitation of a contractual liquidity gap?

A. It cannot show any cash flows

B. It may ignore behavioural changes such as deposit runoff and prepayments

C. It always overstates liquidity risk

D. It measures only capital adequacy

Correct Answer: B. It may ignore behavioural changes such as deposit runoff and prepayments

Question 9

If assets are 1,000 million with duration 4 years and liabilities are 900 million with duration 2 years, the simplified duration gap is:

A. 0.2 years

B. 1.0 years

C. 2.2 years

D. 6.0 years

Correct Answer: C. 2.2 years

Question 10

A credible contingency funding plan should primarily:

A. Depend on selling every asset at book value

B. Specify triggers, responsibilities, communication and feasible funding actions

C. Replace all liquidity buffers

D. Apply only after insolvency

Correct Answer: B. Specify triggers, responsibilities, communication and feasible funding actions