The Fed's tool of raising interest rates is designed to slow bank lending. However, when inflation is driven by massive government deficits, this tool backfires. Higher rates increase the government's interest payments, forcing it to cover a larger deficit, which can lead to more money printing—the root cause of the inflation in the first place.
The Fed's rate hikes fail to address the root causes of inflation in housing, education, and healthcare. These sectors suffer from structural issues like regulation and bureaucracy. Higher rates can even be counterproductive, for instance, by stifling new housing construction, which restricts supply.
Recent inflation was primarily driven by fiscal spending, not the bank-lending credit booms of the 1970s. The Fed’s main tool—raising interest rates—is designed to curb bank lending. This creates a mismatch where the Fed is slowing the private sector to counteract a problem created by the public sector.
When national debt grows too large, an economy enters "fiscal dominance." The central bank loses its ability to manage the economy, as raising rates causes hyperinflation to cover debt payments while lowering them creates massive asset bubbles, leaving no good options.
Due to massive government debt, the Fed's tools work paradoxically. Raising rates increases the deficit via higher interest payments, which is stimulative. Cutting rates is also inherently stimulative. The Fed is no longer controlling inflation but merely choosing the path through which it occurs.
Governments with massive debt cannot afford to keep interest rates high, as refinancing becomes prohibitively expensive. This forces central banks to lower rates and print money, even when it fuels asset bubbles. The only exits are an unprecedented productivity boom (like from AI) or a devastating economic collapse.
Under "fiscal dominance," the U.S. government's massive debt dictates Federal Reserve policy. The Fed must keep rates low enough for the government to afford interest payments, even if it fuels inflation. Monetary policy is no longer about managing the economy but about preventing a debt-driven collapse, making the Fed reactive, not proactive.
The massive increase in government debt held privately has broken the monetary policy transmission mechanism. When the Fed raises rates, the private sector's interest income from Treasury holdings now rises significantly, creating a stimulus that counteracts the tightening effect on borrowing costs.
The U.S. government's debt is so large that the Federal Reserve is trapped. Raising interest rates would trigger a government default, while cutting them would further inflate the 'everything bubble.' Either path leads to a systemic crisis, a situation economists call 'fiscal dominance.'
In periods of 'fiscal dominance,' where government debt and deficits are high, a central bank's independence inevitably erodes. Its primary function shifts from controlling inflation to ensuring the government can finance its spending, often through financial repression like yield curve control.
High debt and deficits limit policymakers' options. Central banks may face pressure to absorb government debt issuance, which conflicts with the goal of raising interest rates to curb inflation, leading to a new era of "fiscal dominance."