Reserves Are Not Deposits, and Almost Every Money-Printing Argument Confuses Them

A commercial bank deposit is a liability of that bank to its customer. A central bank reserve is a liability of the central bank to a commercial bank. They are separate instruments in separate systems, and only one of them can be spent on goods and services by the public.

Quantitative easing creates reserves. The central bank purchases a security from a non-bank seller, credits the seller bank with reserves, and that bank in turn credits the seller with a deposit. The deposit expansion happens as a byproduct of the transaction rather than because reserves were converted into deposits, and the distinction determines what happens next.

Why banks cannot lend out reserves

Reserves circulate only between banks and the central bank. A bank cannot transfer reserves to a member of the public, because the public does not hold accounts at the central bank. When a bank makes a loan, it creates a new deposit by extending its own balance sheet, and it does so subject to capital requirements, funding costs, and its assessment of the borrower, not subject to how many reserves it happens to hold.

This is why the enormous reserve creation after 2008 did not produce the proportional inflation that a simple money multiplier model predicted. The reserves sat where they were created because the binding constraints on lending were capital and credit demand, neither of which reserves relieve. The model that failed was not wrong about arithmetic. It was wrong about which quantity constrains bank behaviour.

When the transmission does work

The distinction collapses when new money reaches the public directly rather than through the banking system. Fiscal transfers deposit funds into household accounts, which creates deposits without requiring any bank lending decision. This is the mechanism that operated during the pandemic and it produced a very different inflation outcome from the post-2008 period, which involved comparable reserve creation and negligible direct transfers.

The useful framework is therefore to ask where new money enters the system rather than how much of it is created. Money entering through reserve creation reaches asset prices. Money entering through household accounts reaches consumer prices. The two mechanisms produce different inflation in different places, which is the observation the debasement note on this site develops further.

The Australian Structure Differs in a Detail That Matters

The Reserve Bank operates a system in which banks hold exchange settlement accounts, and the local framework differs from the United States arrangement in its treatment of surplus balances and the corridor around the target rate. The mechanical distinction between settlement balances and customer deposits is identical, and the same reasoning about lending constraints applies.

The practical relevance for an Australian investor is that commentary imported from United States sources about reserve levels does not map directly onto local conditions, and that domestic credit growth, which is the variable that actually matters for domestic inflation, is driven by housing lending dynamics that have very little to do with settlement balances at all.

Where the model failed in 2008 and why it worked in 2020

Between 2008 and 2014, the Federal Reserve expanded its balance sheet by roughly four trillion dollars, creating reserves at commercial banks. Consumer price inflation over that period averaged below the two percent target. In 2020 and 2021, a comparable balance sheet expansion coincided with substantial direct fiscal transfers to households, and consumer price inflation reached the highest level in four decades. Reserves alone did not produce the inflation that a simple model predicted, and the difference was whether new money reached the public directly.

This is not evidence that reserves are irrelevant. They matter enormously for asset prices, since the same reserve creation that failed to move consumer prices demonstrably moved equity valuations, credit spreads, and real estate. The transmission mechanism is where new money enters, not how much of it exists.

The Australian domestic credit variable

Australian consumer price inflation is far more sensitive to domestic credit growth, particularly housing credit, than to Reserve Bank balance sheet operations. The exchange settlement balances at the private banks matter for very short-term interest rates and for the plumbing of the payments system. They have almost no direct relationship to what Australian consumers pay for goods and services.

The variable an Australian investor concerned about inflation should watch is the growth rate of credit to the household and business sectors, which the Reserve Bank publishes monthly. That is where the transmission from balance sheet expansion into consumer prices runs in this economy, not through settlement balances directly.