FRM Exam Part II · Liquidity Risk Reporting and Stress Testing

Liquidity Risk Measurement Metrics and Reporting

Updated 11 October 2026 · Fact-checked

Liquidity risk metrics measure whether a bank can meet its cash obligations as they fall due. They fall into stock measures (buffers, ratios), flow measures (cash flow gaps) and concentration measures (funding dependence). You calculate each, compare it with limits and report exceptions and trends to management and the board.

Understand Liquidity Risk Measurement Metrics and Reporting

Liquidity risk is the risk that a firm cannot meet payments when due without unacceptable losses. No single number captures it. So risk teams use a small set of metrics, each showing a different angle.

Stock measures look at a position at one date. Examples are the size of the liquid asset buffer, the loan-to-deposit ratio, and regulatory ratios such as the LCR and NSFR. They answer: what do we hold now, compared with what we may need?

Flow measures look at cash moving over time. The main tool is the cash flow gap (also called the liquidity gap or maturity ladder). For each time bucket (overnight, 1 week, 1 month, 3 months and so on) you take contractual or behavioural inflows minus outflows. A cumulative gap adds the buckets up. A negative cumulative gap means you must raise funds or sell assets.

Concentration measures show dependence on a few sources. Examples are the share of funding from the top 10 counterparties, from one currency, one product or one market. A bank can look liquid in total yet be fragile if a single funder leaves. The Basel monitoring tools (BCBS 144) include concentration of funding, available unencumbered assets, LCR by significant currency and market-related monitoring tools.

Reporting turns the numbers into decisions. Good reports are timely, compare each metric with limits and triggers, show trends, split by currency and entity, and highlight breaches with proposed actions. The board sees a short summary with the risk appetite status. Treasury and risk committees see more detail, often daily. Reports must also be based on sound data and clear assumptions, especially for behavioural inflows and outflows.

Key formulas to remember

Net cash flow gap (per bucket): Gap = Cash inflows − Cash outflows; Compute for each time bucket. Positive is a surplus, negative is a shortfall.
Cumulative gap: Cumulative gap(t) = Σ Gap(i) for buckets i = 1 to t; Use this to find the first bucket where funding need appears.
Liquidity Coverage Ratio: LCR = Stock of HQLA ÷ Total net cash outflows over 30 days ≥ 100%; Net outflows = outflows − min(inflows, 75% of outflows). This is a stock-versus-stressed-flow ratio.
Net Stable Funding Ratio: NSFR = Available stable funding ÷ Required stable funding ≥ 100%; Covers a one-year horizon and the structure of the balance sheet.
Loan-to-deposit ratio: LTD = Total loans ÷ Total deposits; A simple stock ratio. Higher means more reliance on non-deposit funding.
Funding concentration: Concentration = Funding from a counterparty (or group) ÷ Total funding; Compare with a limit. Basel monitoring flags significant counterparties above 1% of total liabilities.

How to solve Liquidity Risk Measurement Metrics and Reporting questions

Use this order for any question on liquidity metrics or reporting.

1Identify what the metric is: stock, flow or concentration. The question often turns on this.
2Note the time horizon (overnight, 30 days, one year) and whether assumptions are contractual or behavioural.
3Compute the needed figure: gap per bucket, cumulative gap, ratio or concentration share.
4Compare the result with the limit, trigger or regulatory minimum (for example 100% for LCR).
5Interpret: say what a shortfall or high concentration means for survival and funding.
6Match the action or report to the audience: board needs a summary against risk appetite; treasury needs detail.
7Check the answer choices for common traps such as using gross outflows or the wrong horizon.

Quickest way: Stock, flow, concentration triage

When to use it: Use it for conceptual or classification questions where you have under a minute.

Ask: is it one date (stock), movement over time (flow) or dependence on a few sources (concentration)?
Gap, maturity ladder, projections: flow.
Buffer, LCR, NSFR, loan-to-deposit: stock or structural ratio.
Top funders, currency or product share: concentration.
For numbers, compute the cumulative gap first and look for the first negative bucket.

Common mistakes in Liquidity Risk Measurement Metrics and Reporting

Treating the LCR as a flow measure.
Its denominator is a 30-day outflow figure, so it looks like a flow.
Fix: Remember it compares a stock of HQLA with stressed net outflows. It is a stock-based ratio with a flow-based denominator.
Reading a single bucket gap instead of the cumulative gap.
A positive later bucket looks reassuring.
Fix: Funding needs arise when the cumulative gap turns negative. Always add buckets in order.
Assuming contractual maturities show real behaviour.
Contractual data is easy to find and compute.
Fix: Apply behavioural assumptions, such as deposit runoff and drawdown of credit lines, and state them in the report.
Ignoring concentration because total liquidity looks fine.
Aggregate ratios hide dependence on a few funders.
Fix: Report top counterparty, currency and product shares next to the buffer and ratios.
Sending the board a long data dump.
Candidates equate more detail with better reporting.
Fix: Boards need a concise summary of metrics against limits, breaches, trends and actions. Detail goes to treasury and risk committees.

Worked examples

Example 1

A bank projects the following net cash flows (USD million) for time buckets: overnight −40, 1 week +10, 1 month −30, 3 months +60. It holds USD 50 million of liquid assets that can be sold without loss. In which bucket does the cumulative gap first exceed the liquid assets available?

Show the solution

Cumulative gap overnight = −40.
After 1 week = −40 + 10 = −30.
After 1 month = −30 − 30 = −60.
After 3 months = −60 + 60 = 0.
Compare shortfalls with USD 50 million of liquid assets: −40 and −30 are covered; −60 exceeds 50.
The first breach is the 1-month bucket, with a USD 10 million uncovered shortfall.

Answer: The 1-month bucket, where the cumulative gap of −USD 60 million exceeds the USD 50 million buffer by USD 10 million.

Example 2

A bank has HQLA of USD 900 million. Over 30 days under stress, outflows are USD 1,000 million and inflows are USD 600 million. Calculate the LCR and say whether it meets the Basel minimum.

Show the solution

Inflows are capped at 75% of outflows: 0.75 × 1,000 = USD 750 million.
Inflows of 600 are below the cap, so 600 is used.
Net outflows = 1,000 − 600 = USD 400 million.
LCR = 900 ÷ 400 = 2.25, or 225%.
The minimum is 100%, so the bank meets it.

Answer: LCR = 225%, above the 100% minimum.

Exam tips

Be ready to label each metric as stock, flow or concentration. This is the standard conceptual test.
In LCR numbers, apply the 75% inflow cap before dividing.
For gap questions, build the cumulative line and find the first negative bucket.
For reporting questions, choose the answer that links metrics to limits, triggers and escalation, with the board seeing a summary.
Remember that Basel monitoring tools complement the LCR and NSFR and do not replace them.

Practice questions from Liquidity Risk Reporting and Stress Testing

Liquidity Risk Measurement Metrics and Reporting: frequently asked questions

What is the difference between stock and flow liquidity measures?

Stock measures describe a position at one date, such as the liquid asset buffer or a ratio like the loan-to-deposit ratio. Flow measures describe cash movements over time, such as the cash flow gap. You need both to judge liquidity.

How is cash flow gap analysis used?

You place expected inflows and outflows into time buckets and compute the gap and the cumulative gap. A negative cumulative gap shows when and how much funding you must raise or when you must use buffers.

What should liquidity reports to the board include?

A short summary of key metrics against limits and risk appetite, any breaches, trends, stress test results and the actions proposed. Detailed data stays with treasury and risk committees.

Why do concentration measures matter if the LCR is above 100%?

The LCR is an aggregate figure. A bank can meet it and still depend heavily on a few funders, a currency or one market. Concentration metrics show that hidden vulnerability.