Asset and liability management in banking, usually shortened to ALM, is the discipline of coordinating what a bank owns with what it owes so that interest income stays healthy, cash is available when depositors or creditors demand it, and the institution’s long-term value survives shifts in interest rates. The practice exists because of a tension built into banking itself: banks fund long-dated loans with short-dated deposits, and that mismatch creates exposure to rate movements and liquidity shocks. ALM is the set of measurements, policies, and hedging tools that keeps the mismatch inside limits management and regulators can live with.
In day-to-day terms, ALM covers forecasting how depositors will behave next quarter, modeling what a 200-basis-point rate shock would do to earnings, calculating how fast assets could be sold if funding dried up, and deciding whether to hedge billion-dollar bond portfolios with swaps or restructure the portfolio outright. It is practiced inside every bank regardless of size, though the formality and the regulatory floor rise with the institution.
Why ALM Matters
The collapse of Silicon Valley Bank in March 2023 is the clearest modern example of what happens when ALM fails. SVB poured deposits into long-dated Treasury and agency securities, with 79 percent of its securities portfolio maturing in ten or more years. When interest rates climbed sharply in 2022, the market value of those bonds cratered. By year-end 2022, SVB was sitting on roughly $15 billion in unrealized losses on its held-to-maturity portfolio alone. The bank had breached its own internal interest rate risk limits on and off since 2017, yet rather than restructuring the portfolio, management adjusted its modeling assumptions about deposit duration to paper over the breach.1Federal Reserve Board. Review of the Federal Reserves Supervision and Regulation of Silicon Valley Bank
When SVB finally attempted to restructure by selling $21 billion in securities and booking a $1.8 billion after-tax loss, depositors panicked. The bank’s concentrated, largely uninsured deposit base fled almost overnight. The FDIC noted that both SVB and Silvergate Bank had invested more than half their assets in long-dated fixed-rate government bonds, and the resulting unrealized losses effectively wiped out SVB’s tangible equity.2Federal Deposit Insurance Corporation. Recent Bank Failures and the Path Ahead A mismatch between the duration of assets and the stability of funding is exactly what ALM exists to prevent.
Interest Rate Risk
Interest rate risk is the single largest financial exposure most commercial banks face. When rates move, the cost of deposits and borrowed funds shifts at a different speed than the yield on loans and securities. That gap can compress margins quickly. Banks measure the exposure in two distinct ways, each capturing a different time horizon.
Earnings Risk
Earnings risk focuses on what happens to net interest income (NII) over the next one to three years. NII is the difference between interest earned on loans and securities and interest paid on deposits and debt. If a bank holds mostly fixed-rate loans but funds them with floating-rate deposits, a rate increase raises funding costs immediately while loan yields stay flat, and NII drops.
Banks quantify this through NII simulation, sometimes called earnings-at-risk modeling. The process projects income under multiple rate scenarios, including sudden parallel shifts of 200 or 300 basis points, gradual ramps, and changes in the shape of the yield curve. Static simulations hold the balance sheet constant to isolate the risk embedded in the current portfolio. Dynamic simulations layer in assumptions about new lending, deposit growth, and management responses. The gap between projected NII under stress and the base case tells management how much income is at stake.
A rate sensitivity gap is a simpler shortcut. It compares the dollar amount of assets and liabilities repricing within a given window. A bank with more liabilities repricing in the next 90 days than assets has a liability-sensitive gap, meaning rising rates will hurt NII. Closing that gap might involve shifting new loan originations toward floating-rate products or extending the maturity of funding with longer-term certificates of deposit.
Economic Value Risk
Where earnings risk asks what happens to income next year, economic value risk asks what happens to the entire balance sheet if rates change permanently. The measure, commonly called Economic Value of Equity (EVE), calculates the present value of all expected cash flows from assets minus the present value of all expected cash flows from liabilities. The difference is the economic value of the bank’s equity. Regulators generally expect EVE sensitivity to remain within 15 to 20 percent of Tier 1 capital under a 200-basis-point rate shock.3Federal Reserve Board. Interest-Rate Risk Management Section 3010.1
Duration analysis is the primary tool. Duration measures how sensitive a portfolio’s value is to a one-percentage-point change in rates. The duration gap compares the weighted-average duration of assets to the weighted-average duration of liabilities, adjusted for leverage. A large positive gap means asset values will fall faster than liability values when rates rise, eroding equity. SVB’s balance sheet had exactly this profile.
Duration has a limitation. It assumes a linear relationship between rate changes and value changes, when the real relationship is curved. Mortgage-backed securities, for example, shorten in duration when rates fall (because borrowers refinance faster) and lengthen when rates rise (because refinancing slows). That behavior, called negative convexity, means losses in a rising-rate environment can be larger than a straight duration calculation predicts. Banks with heavy mortgage exposure need to account for convexity in their models or they will understate their true risk.
A bank must set explicit limits for both earnings risk and economic value risk and monitor them at least quarterly. Institutions with high exposure relative to capital can expect regulators to require corrective action.3Federal Reserve Board. Interest-Rate Risk Management Section 3010.1
Liquidity Risk
A bank can be solvent on paper and still fail if it cannot produce cash when depositors or creditors demand it. Liquidity risk shows up in two forms, and they tend to feed on each other.
Funding liquidity risk is the danger that a bank cannot raise enough cash to cover withdrawals and maturing obligations as they come due. Core deposits like checking and savings accounts are the cheapest and most stable funding source. Wholesale funding from institutional lenders or brokered certificates provides flexibility but can evaporate quickly when confidence falters. A bank that leans too heavily on wholesale funding is vulnerable to exactly the kind of run that killed SVB. Managing the risk requires detailed cash flow projections across horizons from overnight to multiple years, and those projections must incorporate realistic assumptions about how depositors will actually behave, not just their contractual rights. In a stress scenario, a significant percentage of uninsured deposits might leave within days, while insured deposits tend to be far stickier.
Market liquidity risk arises when a bank cannot sell an asset quickly without taking a steep discount. During market dislocations, even normally liquid securities can become difficult to unload at fair value. When a bank is forced to sell into a distressed market to raise cash, realized losses can overwhelm the balance sheet. The dynamic worsens funding liquidity risk because potential buyers know the seller is desperate.
Regulatory Liquidity Floors
Two post-financial-crisis ratios impose minimum liquidity standards on larger banks. The Liquidity Coverage Ratio (LCR) requires covered institutions to hold enough high-quality liquid assets to cover total net cash outflows over a 30-day stress period. The ratio must be at least 1.0, meaning the HQLA buffer must fully cover projected outflows.4eCFR. 12 CFR 329.10 – Liquidity Coverage Ratio
The Net Stable Funding Ratio (NSFR) addresses the longer-term funding picture. It requires a bank’s available stable funding to equal or exceed its required stable funding over a one-year horizon, with the ratio also maintained at 1.0 or above.5eCFR. 12 CFR 249.100 – Net Stable Funding Ratio The NSFR complements the LCR by discouraging the practice of funding long-term assets with volatile short-term borrowing.6Federal Deposit Insurance Corporation. Net Stable Funding Ratio – Liquidity Risk Measurement Standards and Disclosure Requirements Both ratios are scaled by institution size: the largest global banks face the full standards, mid-size banks face reduced versions, and banks under $100 billion in total assets are not subject to the LCR or NSFR at all, though regulators still expect sound liquidity practices from institutions of any size.
Who Runs ALM Inside a Bank
The Asset-Liability Committee (ALCO) is the senior body that translates a bank’s board-level risk appetite into concrete ALM policies. The committee typically includes the Chief Financial Officer, Chief Risk Officer, and Treasurer, along with heads of lending and funding operations. The cross-functional membership matters because ALM decisions ripple across every business line.
The ALCO reviews risk reports from Treasury and Risk Management covering the interest rate gap, duration exposure, EVE sensitivity, and compliance with LCR and NSFR thresholds. Based on those reports, the committee sets or adjusts the official limits for interest rate and liquidity risk. If the bank’s duration gap is drifting toward its limit, the ALCO decides whether to hedge with derivatives, shift the loan mix, or adjust deposit pricing.
Federal Reserve guidance requires the board of directors to approve the bank’s interest rate risk policy at least annually and to review risk positions relative to established limits at least quarterly. Exceptions to policy must be reported to the board promptly.3Federal Reserve Board. Interest-Rate Risk Management Section 3010.1 In practice, the ALCO is the body that does the analytical work feeding those board decisions. It decides whether new loan production should lean toward fixed or floating rates, approves major debt issuances, and ensures that deposit and loan pricing reflects the true cost of funds and embedded risk.
The Tools Banks Use
ALM strategy depends on a set of interlocking models and instruments. Getting the models wrong means hedging the wrong risk, and the 2023 bank failures proved that point painfully.
Behavioral Modeling of Deposits
The most consequential modeling challenge in ALM involves non-maturity deposits: checking accounts, savings accounts, and money market accounts that have no contractual maturity date. Customers can withdraw at any time, but in practice a large core balance stays with the bank for years. Modeling these deposits requires estimating three things: the repricing beta (how much the bank will adjust deposit rates in response to market rate changes), the effective maturity (how long balances will actually remain), and the decay rate (how quickly balances run off over time).
Two embedded options complicate the analysis. The bank controls the deposit rate it offers, and the customer controls whether to withdraw. When rates rise, the bank faces pressure to raise deposit rates or lose balances to competitors. When rates fall, depositors tend to stay put. Misjudging those dynamics can dramatically misstate a bank’s interest rate exposure. SVB’s decision to change its deposit duration assumptions rather than restructure its portfolio is a textbook example of how this goes wrong. The models must be regularly back-tested against actual customer behavior, and any divergence between predicted and observed behavior should trigger a model review.
Funds Transfer Pricing
Funds transfer pricing (FTP) is the internal mechanism banks use to allocate interest rate risk and liquidity cost to individual business units. Without FTP, a lending division that originates five-year fixed-rate loans has no way of knowing whether it is creating value or piling risk onto the balance sheet. FTP works by charging each business unit an internal rate that reflects the market cost of funding a loan or deposit with matching maturity and rate characteristics. The lending unit pays the internal treasury for funds, and the deposit-gathering unit receives a credit for supplying them.
The separation does two things. It centralizes interest rate and liquidity risk management in the treasury function rather than scattering it across business lines, and it gives management an accurate picture of which products and business units are genuinely profitable after accounting for the cost of the risk they create. Interagency guidance issued in 2016 formalized the expectation that banks use a robust FTP framework as part of their ALM process.
Hedging With Derivatives
Interest rate swaps are the workhorses of ALM hedging. A bank with a large positive duration gap, meaning its asset values are highly sensitive to rate increases, can enter a pay-fixed, receive-floating swap. The trade synthetically shortens the duration of the asset portfolio without forcing the bank to sell securities. The swap generates floating-rate income that rises with rates, offsetting the decline in the value of fixed-rate holdings.
Interest rate caps provide a different kind of protection. A cap sets a ceiling on the floating rate a bank pays on its funding. If market rates rise above the cap rate, the counterparty reimburses the difference. Caps cost an upfront or periodic premium, and that cost rises with the length of the cap term and how far below current rates the cap strike is set. A collar combines a cap with a floor, limiting both the upside and downside of rate exposure and reducing the net premium cost. Futures and options on interest rates handle shorter-term hedging needs. All derivative use must be governed by strict counterparty risk limits and monitored separately from the underlying positions being hedged.
Stress Testing and Contingency Funding
Scenario analysis models the impact of specific, plausible events: a 300-basis-point parallel rate increase over 12 months, a flattening yield curve, or a rapid deposit outflow following a credit downgrade. Stress testing pushes further, modeling extreme but possible combinations such as a deep recession coinciding with a liquidity freeze. Federal Reserve guidance expects banks to conduct stress tests that include abrupt, significant shifts in the yield curve and to evaluate management’s ability to adjust the risk position under both normal and severely stressed conditions.3Federal Reserve Board. Interest-Rate Risk Management Section 3010.1
Results feed directly into ALCO decisions about risk limits, capital buffers, and contingency funding plans. Contingency plans detail which assets can be pledged as collateral for emergency borrowing and at what haircuts, which central bank facilities are available, and what sequence of actions management would follow if liquidity deteriorated rapidly. A bank that cannot articulate a credible contingency plan under stress has not finished its ALM work.
What Regulators Do When ALM Fails
When poor ALM decisions erode a bank’s capital base, federal regulators intervene through Prompt Corrective Action (PCA). Under federal law, every insured bank falls into one of five capital categories, and the consequences escalate sharply as capital deteriorates.7Office of the Law Revision Counsel. 12 USC 1831o – Prompt Corrective Action
- Well capitalized: total risk-based capital ratio of 10 percent or above, Tier 1 ratio of 8 percent or above, common equity Tier 1 of 6.5 percent or above, and leverage ratio of 5 percent or above. No restrictions.
- Adequately capitalized: meets minimum ratios (8 percent total, 6 percent Tier 1, 4.5 percent common equity Tier 1, 4 percent leverage) but does not significantly exceed them. Some restrictions on brokered deposits.
- Undercapitalized: falls below any of the adequately capitalized thresholds. The bank must submit a capital restoration plan, cannot grow assets without regulatory approval, and cannot open new branches or enter new business lines without permission.7Office of the Law Revision Counsel. 12 USC 1831o – Prompt Corrective Action
- Significantly undercapitalized: falls below 6 percent total, 4 percent Tier 1, or 3 percent common equity Tier 1. Regulators may force management changes, restrict executive compensation, and prohibit capital distributions.
- Critically undercapitalized: tangible equity falls to 2 percent of total assets or below. The bank faces potential receivership within 90 days.8Federal Deposit Insurance Corporation. Formal and Informal Enforcement Actions Manual, Chapter 5 – Prompt Corrective Action
Beyond PCA, regulators can impose cease-and-desist orders, civil money penalties, or outright prohibitions from the banking industry against individuals responsible for unsafe practices.9Federal Reserve Board. Enforcement Actions These are not theoretical tools, and they are the backstop that gives ALM its weight inside a bank. A committee that treats interest rate limits or liquidity ratios as suggestions is making decisions that, carried far enough, put the charter itself at risk.