FRM Exam Part II · Monitoring Liquidity

Intraday Liquidity Risk Monitoring Tools and Basel Metrics

Updated 11 October 2026 · Fact-checked

Intraday liquidity risk is the risk that a bank cannot meet payments during the business day. BCBS 248 sets seven monitoring tools: daily maximum usage, available liquidity at start of day, total payments, time-specific obligations, correspondent banking payments, credit lines extended to financial institution customers, and intraday throughput. Maximum usage is the peak negative cumulative net position.

Understand Intraday Liquidity Risk Monitoring

Intraday liquidity is the funding a bank needs during the day to make payments as they fall due. Payments settle in real time in systems such as RTGS. A bank often has to pay out before incoming payments arrive. The gap is covered by central bank balances, credit lines, collateral or incoming receipts.

The risk is different from overnight liquidity. Overnight liquidity asks whether the bank can fund its position at the close of business. Intraday liquidity asks whether it can settle each payment at the right time during the day. A bank can be fine at close of business and still fail to pay at 10:00 because receipts come late. Delayed payments can pass stress to other banks, because one bank's payment is another bank's funding.

The Basel Committee (BCBS 248) sets seven monitoring tools that supervisors use:

Daily maximum intraday liquidity usage.
Available intraday liquidity at the start of the business day.
Total payments.
Time-specific obligations.
Payments made on behalf of correspondent banking customers.
Intraday credit lines extended to financial institution customers.
Intraday throughput.

They are monitoring tools, not minimum standards like the LCR. A bank measures them for each business day, by currency or system, and reports averages and maximums over a month.

The key tool is daily maximum intraday liquidity usage. You build the cumulative net position through the day: payments received minus payments sent. The most negative point is the maximum usage. It shows the largest amount of intraday liquidity the bank needed. It is compared with available intraday liquidity, which includes central bank reserves, unencumbered liquid assets that can be pledged, and collateral pledged at payment systems. Available intraday liquidity is reported at the start of the day, and the lowest amount available during the day is also tracked.

Other tools show timing and dependence. Time-specific obligations are payments that must settle by a set time. Intraday throughput is the share of outgoing payments settled by given times, which shows how much a bank relies on incoming receipts. Total payments show the scale of activity. Large clients and correspondent banking add to the risk, which is why the correspondent banking and customer credit line tools exist.

Key formulas to remember

Net cumulative position: Net position(t) = Σ payments received up to t − Σ payments sent up to t; Track it through the day; a negative value means intraday liquidity is being used.
Daily maximum liquidity usage: Max usage = largest negative net cumulative position during the day = −min over t of Net position(t); If the position is never negative, usage is zero. Usage is measured from the start-of-day position.
Available intraday liquidity: Available = central bank balance + unencumbered liquid assets that can be pledged + collateral pledged at payment systems + contractually committed intraday credit lines received; Basel reports it at the start of the day and at its minimum during the day. Do not add net payments received here; that belongs to usage. Compute headroom separately: Headroom = Available − maximum usage.
Total payments: Total payments = gross value sent and received, per day; A scale measure of activity, not a measure of net need.
Intraday throughput: Throughput(t) = cumulative value of outgoing payments settled by t ÷ total outgoing payments for the day; A low early throughput shows a bank waits for receipts before paying.

How to solve Intraday Liquidity Risk Monitoring questions

Use the same method for any question about intraday liquidity monitoring.

1Identify what is asked: a definition, a Basel tool, or a calculation of usage or buffer.
2List the payment flows in time order, marking receipts as positive and payments as negative.
3Compute the running cumulative net position after each flow.
4Find the lowest point. Its absolute value is the daily maximum usage; if never negative, usage is zero.
5Compare usage with available intraday liquidity to find headroom or shortfall.
6For throughput or time-specific questions, divide settled outgoing payments by total outgoing payments.
7Interpret: heavy reliance on receipts, late timing or thin buffers point to higher risk.
8Check you used the right currency, system and business day.

Quickest way: Peak-negative running total

When to use it: Use for any MCQ giving a timeline of payments and asking for maximum usage or headroom.

Write receipts as + and payments as − in time order.
Add a running total, ignoring opening balances.
Pick the lowest value and drop the sign.
Subtract it from the available liquidity for headroom.
Scan options and reject any that use the end-of-day net or the largest single payment.

Common mistakes in Intraday Liquidity Risk Monitoring

Using the end-of-day net position as the maximum usage.
Students think net flow at close shows the need.
Fix: Maximum usage is the lowest point of the running total during the day, not the closing figure.
Treating intraday metrics as minimum standards like the LCR.
Both appear in Basel liquidity reforms.
Fix: The BCBS 248 intraday tools are monitoring tools for supervisors, with no required ratio.
Confusing intraday and overnight liquidity.
Both involve having enough cash.
Fix: Intraday is about timing of payments during the day; overnight is about funding the position at close.
Choosing the largest single payment as the usage.
Large payments look most important.
Fix: Offsetting receipts matter. Only the cumulative net figure counts.
Ignoring timing of receipts.
Students total flows without order.
Fix: The same flows in a different order give a different peak. Always run the total in time sequence.

Worked examples

Example 1

A bank starts the day with $0 net position. Settled flows in time order are: 09:00 pay $400m; 10:00 receive $150m; 11:00 pay $300m; 13:00 receive $500m; 15:00 pay $100m. What is the daily maximum intraday liquidity usage?

Show the solution

Running total after 09:00: −400.
After 10:00: −400 + 150 = −250.
After 11:00: −250 − 300 = −550.
After 13:00: −550 + 500 = −50.
After 15:00: −50 − 100 = −150.
Lowest point is −550 at 11:00.

Answer: Daily maximum usage is $550m. The closing net of −$150m would understate it.

Example 2

A bank has available intraday liquidity of $600m at the start of the day. Its outgoing payments total $1,000m. By 12:00 it has settled $250m of outgoing payments. Its maximum usage is $550m. Compute the throughput at 12:00 and the headroom, and interpret.

Show the solution

Throughput at 12:00 = 250 ÷ 1,000 = 25%.
Headroom = available − maximum usage = 600 − 550 = $50m.
Interpret: only a quarter of payments settled by midday, so the bank leans on later receipts, and the buffer is thin.

Answer: Throughput is 25% and headroom is $50m, which signals high dependence on receipts and little cushion against delays.

Exam tips

For calculations, always build the running total in time order before picking the minimum.
Know the Basel tools by name and what each shows; options often swap their definitions.
Remember these are monitoring tools, not binding ratios.
In case questions, link a rise in usage or low early throughput to stress on the bank or its counterparties.
Do not mix intraday liquidity with LCR or NSFR; the horizons differ.

Practice questions from Monitoring Liquidity

Intraday Liquidity Risk Monitoring: frequently asked questions

What is intraday liquidity risk?

It is the risk that a bank cannot settle payments when due during the business day. It can arise even when the bank is sound overnight, for example when receipts arrive late.

What is daily maximum intraday liquidity usage?

It is the largest negative cumulative net payment position during the day. It shows the most intraday liquidity the bank needed. Basel asks banks to report it by day and summarise it over a month.

How is intraday liquidity different from overnight liquidity?

Intraday liquidity covers timing of payments within the day, using reserves, credit and collateral. Overnight liquidity concerns funding the position at close of business and into the next day.

Are the Basel intraday metrics mandatory ratios?

No. They are monitoring tools that supervisors use to assess a bank's intraday liquidity risk. They are not minimum requirements like the LCR.