What it means
Money is not a single thing, so statisticians publish it in layers ordered by how quickly each component can be spent. M1 is the most liquid layer, meaning it captures money that requires no notice period, no penalty and no conversion before it can buy something.
The components are straightforward. Physical currency held by the public sits alongside demand deposits, which are current or checking account balances, plus other liquid deposits that customers can draw on freely.
Money held inside the banking system as reserves and cash in bank vaults is excluded, because it is not available for the public to spend. Definitions differ by country and change over time.
The United States moved savings deposits into M1 in 2020 after rules limiting monthly withdrawals were relaxed, which caused a large one-off jump in the reported figure and makes long historical comparisons misleading unless the break is adjusted for. M1 matters because it sits closest to actual transactions.
Rapid growth in M1 without matching growth in output has historically been associated with rising inflation, while a sharp contraction can signal that households and businesses are pulling back from spending. The caveat is that the relationship between money measures and prices is loose and variable, partly because the velocity of money changes.
Most modern central banks target interest rates and inflation directly rather than steering money aggregates, and treat M1 as one input among many. For a business audience the useful takeaway is directional rather than precise.
A sustained acceleration in M1 usually accompanies easy credit and strong nominal demand, while a sustained contraction tends to accompany tighter lending and weaker sales, and both are worth knowing about a quarter or two before they show up in your own order book.
In practice
Real-world examples.
Example
A macroeconomic analyst at a bank builds a monthly dashboard tracking M1 growth against retail sales. A sudden divergence, with M1 rising while sales stall, prompts a note suggesting households are building precautionary balances.
Example
A finance director planning a three-year capital programme reads commentary on sharply contracting M1. She interprets it as a sign that credit conditions are tightening and brings forward the refinancing of a maturing facility.
Example
An economics lecturer explains why the reported M1 series jumped dramatically in 2020, using it to show students that a definitional change can look like an economic event if you do not read the footnotes.
Think of it
“M1 is the most liquid money-cash and checking accounts.
Formula
Calculation
M1 = Currency in circulation + Demand deposits + Other liquid (checkable) deposits
The figures below are illustrative round numbers chosen to show the arithmetic, not published statistics for any particular country or date.
Currency in circulation: $2,300 billion
Demand deposits: $5,100 billion
Other liquid deposits: $10,400 billion
M1 = $2,300bn + $5,100bn + $10,400bn = $17,800 billion, or $17.8 trillion
If M1 in the same illustrative economy was $16,800 billion a year earlier, annual growth is ($17,800bn - $16,800bn) / $16,800bn = $1,000bn / $16,800bn = 5.95% approximately. Against real output growth of 2%, that pace of money growth would be one of several signals an economist might read as mildly inflationary.Case study
Seen in the real world.
The following is a fictional, illustrative scenario. Copperfield Freight, an invented regional haulier, employed a part-time economist to advise its board on timing a major fleet purchase. She reported that M1 in the illustrative economy had grown roughly 12% year on year while output grew about 2%, and argued that price pressure was building.
The board acted on that reading and ordered $8,400,000 of vehicles a year earlier than planned, financing at a fixed rate. In the fictional account, vehicle list prices rose about 9% over the following eighteen months and borrowing costs rose too, so the early commitment saved roughly $750,000 in combined purchase and financing cost.
The economist was careful to record the limits of the call in her note. Money aggregates are a noisy signal, the correct decision depended as much on the company's existing fleet age as on M1, and she flagged that a repeat of the same reasoning would not reliably produce the same result.
Watch out
Common mistakes.
- Treating M1 as the total amount of money in an economy, when it deliberately excludes savings, time deposits and most institutional balances.
- Comparing M1 across countries without checking that each statistical agency defines the components the same way.
- Reading a definitional change, such as the 2020 US reclassification, as a real surge in spendable money.
Questions
People also ask.
Does M1 include money in a savings account?
It depends on the country and the period; the US now includes most savings deposits, while other definitions place them in M2.
Is high M1 growth always inflationary?
No, it depends on whether output is growing alongside it and on how quickly the money changes hands.
Who publishes M1 figures?
The central bank or national statistics agency of each country, usually monthly with a lag of a few weeks.
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