What it means
Central banks publish money supply figures in layers, from the narrowest to the widest. Narrow money is cash and current accounts, broad money adds savings and time deposits, and broad liquidity adds the near-cash instruments that sit outside banks altogether.
Each layer answers a slightly different question about how much purchasing power is available. The extra items in broad liquidity are things a treasurer would count as cash without hesitation: short-dated government bills, commercial paper, bankers acceptances and savings bonds.
They are not deposits, so they never appear in the banking statistics, yet they can be sold in a day at close to face value. Leaving them out understates how much spending power really exists.
The measure matters because money can migrate between layers without the total changing. If companies shift cash out of bank deposits into Treasury bills, broad money falls sharply while broad liquidity barely moves, and reading only the narrower figure would suggest a monetary squeeze that is not actually happening.
Watching the wide measure guards against that false signal. It is not a perfect tool.
Broad liquidity is published with a lag, gets revised, and in some countries the widest official series has been discontinued, leaving analysts to rebuild an equivalent from separate data sources. Different statistical agencies also draw the boundary in different places, which makes cross-border comparison rough.
For a business, the number is context rather than a decision input. Sustained rapid growth in broad liquidity tends to accompany easy credit and rising asset prices, while a contraction often precedes tighter lending conditions and slower demand.
Treating it as one indicator among several, alongside credit growth and interest rates, is the sensible use.
In practice
Real-world examples.
Example
An economist notices that broad money growth has dropped to 1% while broad liquidity is still growing at 4%. Digging into the components, she finds companies have moved roughly $300,000,000,000 of deposits into Treasury bills chasing higher yields, so the apparent monetary squeeze is largely a reclassification.
Example
A corporate treasury moves $250,000,000 from bank deposits into a ladder of three-month government bills. The money leaves the broad money statistics entirely but stays inside broad liquidity, because the bills can be sold within a day at close to face value.
Example
A bank's asset and liability committee tracks broad liquidity growth as one input into its deposit pricing. When the wider measure grows faster than the bank's own deposits, the committee reads it as a sign that savers are being drawn to non-bank alternatives and raises its rates.
Formula
Calculation
Formula: broad liquidity = broad money + other liquid assets held outside the banking system.
Worked example: A central bank reports its figures in billions of dollars. Broad money on the widest banking definition is $21,200 billion. Outside that total it counts short-dated Treasury bills held by households and companies of $900 billion, commercial paper of $420 billion, bankers acceptances of $80 billion and savings bonds of $150 billion.
Those near-cash items sum to 900 + 420 + 80 + 150 = $1,550 billion. Broad liquidity is therefore $21,200 billion + $1,550 billion = $22,750 billion, which is 1,550 / 21,200 = 7.3% more than the broad money figure alone.
A year earlier the same measure stood at $21,900 billion. Annual growth is therefore (22,750 - 21,900) / 21,900 = 850 / 21,900 = 3.9%. If broad money on its own had grown by only 1% over the same period, the difference would tell you that money had moved out of deposits and into bills rather than disappearing from the economy.Case study
Seen in the real world.
Bellhaven Asset Managers is an illustrative, fictional investment firm whose economics team builds its own broad liquidity series because the official one in its market was discontinued years ago. It adds short-dated government bills, commercial paper and money market fund balances held outside banks to the published broad money figure.
In one year the published broad money measure fell by 1.5%, prompting several commentators to warn of a credit crunch. Bellhaven's wider series rose by 2.8% over the same period, because roughly $180,000,000,000 had simply moved from bank deposits into Treasury bills after a rise in short-term rates. The firm kept its allocation to cyclical equities and avoided a defensive move that would have cost it performance.
The illustrative point is that the boundary of a statistic can matter as much as the statistic itself. Money migrating between layers looks like money disappearing if you only ever watch one layer.
Watch out
Common mistakes.
- Using broad liquidity and broad money interchangeably, when the wider measure includes near-cash assets held outside banks.
- Reading a fall in one money measure as a monetary squeeze without checking whether the money has simply moved into another layer.
- Expecting the same definition across countries, when statistical agencies draw the boundary in different places.
Questions
People also ask.
What counts as a liquid asset for this purpose?
Anything sellable within days at close to face value, typically short-dated government bills, commercial paper, bankers acceptances and savings bonds.
Is broad liquidity still published everywhere?
No, some central banks have discontinued their widest official series, so many analysts now assemble an equivalent from separate published components.
Why should a non-financial business care?
Because sustained changes in the measure tend to run ahead of changes in credit availability, which shows up directly in overdraft and facility negotiations.
From the founder's library
Take it further with the book.
Build your financial confidence beyond this definition. Shihan's full-length guide, Accounting Fundamentals, takes the same plain-English approach and turns it into a complete, practical playbook for non-finance managers, business owners and students - with chapter-end quiz answers and presentation slides included.
25% off with code MMHQ25, applied at checkout. Priced in USD - checkout may show the equivalent in your local currency.
View the book and save 25%Related