Money, Wealth, and Debt
6 minute read
I would like to begin this short series with a deceptively simple question: What do we mean by money, wealth, and debt?
To answer that question, we must proceed carefully. These terms are often used interchangeably in public discussion, yet they refer to very different things. I will begin with money.
There is the money we recognize most easily: paper currency and coins, along with the electronic balances that commercial banks hold at the central bank. This is often called base money. It is issued by the state and is used to settle payments between banks. When funds move from one bank to another, the banks must ultimately square their accounts with each other. They do this by transferring balances held at the central bank. These balances function as the final form of payment within the banking system.
However, most of the money we use every day is not paper currency. It is a number in a bank account. When your paycheck is deposited, you do not receive a stack of cash. Instead, your bank increases the balance shown in your account.
From your perspective, that balance is an asset. It is money you can spend. From the bank’s perspective, it represents an obligation. The bank owes you that amount. If you withdraw cash or transfer funds, the bank must settle that obligation. For that reason, the deposit is recorded on the bank’s books as a liability.
In everyday terms, a bank deposit is a promise by the bank to provide currency or to transfer funds on your behalf. It functions as money because that promise is widely accepted and trusted.
However, deposits do not only move. They are also created.
In modern systems, most new deposits come into existence through lending. When a bank makes a loan, it does not transfer funds from someone else’s account. Instead, it creates a new deposit in the borrower’s account. At that moment, both money and debt come into existence. A new deposit appears on one side of the bank’s balance sheet, and a matching loan asset appears on the other.
Banks cannot expand credit without limit. They must be able to meet withdrawals and payments as they come due, and they operate within regulatory constraints. But within those boundaries, it is bank lending that creates most of the money in circulation. When banks extend credit, they create new deposits. As deposits expand, the money supply expands. Governments issue base money, but most of the money people use in modern economies is created through the lending decisions of commercial banks.
The essential point is straightforward. When banks expand credit, the money supply expands because deposits expand. Yet nothing physical has been produced at that instant. No additional food, fuel, infrastructure, or organized environmental work has come into existence. What has been created is a claim on future production.
These reflections concern structural features of credit-based monetary systems, not any single country. Institutional design differs across nations, but where credit expansion creates deposits, monetary claims expand through similar accounting mechanisms. The thermodynamic constraint does not vary by governance structure. Debt remains a claim on future organized work, and the capacity to honor that claim ultimately rests on the system’s ability to mobilize energy and material flows.
Much of our public conversation treats money as wealth and debt as a burden measured against income. Yet nearly a century ago, Frederick Soddy warned that modern banking systems can create monetary claims without creating real wealth. Wealth, he argued, arises from the transformation of energy and matter in accordance with physical law. Debt, by contrast, is a claim on future production. Confusing the two allows financial claims to grow independently of the biophysical processes that ultimately sustain them.
H. T. Odum approached the same issue from a different direction. In his way of thinking, real wealth is accumulated environmental work organized through hierarchical processes. Economies are not abstract monetary circuits; they are energy-driven systems embedded in the biosphere. What we call wealth reflects the past work required to build and maintain structure over time, work that can, in principle, be traced and accounted for. Money, by contrast, is a feedback signal. It is useful, powerful, and necessary, but not primary. It records and coordinates work; it does not perform it.
If this distinction seems abstract, its scale is not. In the contemporary global economy, monetary claims have expanded to magnitudes that make the issue difficult to ignore. Recent international estimates place the global money supply on the order of 100 to 140 trillion dollars, while total global debt, public and private combined, exceeds 250 trillion dollars and may approach 300 trillion. The exact figures vary by source and year, but the scale relationship is unmistakable. Financial claims now stand at several times the stock of base money that ultimately settles them, and far beyond the physical work embodied in the economy.
Large divergences between financial claims and monetary aggregates are often taken as signals of crisis. Yet the relationship is more nuanced. In a growing energy base, expanding credit can finance real development, new infrastructure, new production, and higher levels of organized work. Under those conditions, rising debt may be matched by rising capacity.
The difficulty arises when financial claims grow more rapidly than the underlying ability of the economy to organize energy and material flows into real output. Debt represents fixed claims on future production. If production does not expand at a comparable pace, the system must adjust. That adjustment may appear as inflation, asset price volatility, financial stress, slower growth, or periodic crisis. The instability is not caused by money alone. It reflects tension between symbolic claims and the physical work required to sustain them.
Soddy cautioned against mistaking debt for wealth. Odum demonstrated that wealth is environmental work organized in time. Bringing these two insights together suggests a broader question for our era:
What happens when financial claims expand more rapidly than the energetic foundation of the economy itself?
In the next reflection, I will examine how GDP growth, often treated as the primary indicator of economic health, interacts with this dynamic and why monetary growth can obscure underlying physical constraints.