Central Bank Independence — To What Degree?
Central bank independence from direct government control is generally accepted as the best means for a nation to achieve low inflation and relatively stable macroeconomic outcomes.[1]
Independence, however, does not guarantee those outcomes.
The question that remains looks beyond the usual praise of central bank independence. It asks what happens when an independent central bank uses its discretion to suppress interest rates for an extended period and to engage in large-scale asset purchases, thereby injecting substantial amounts of base money into the economy.
What if such discretionary policy inflates asset values, pushes wholesale and consumer prices higher, and misallocates resources? If central bank independence can lead to such outcomes, is it still the best arrangement?
From Independence to Fiscal Dominance
Over the past two decades — and in earlier periods — the Federal Reserve has adopted policies that, in theory, central banks were designed to avoid. While it provided liquidity in crises, it then went on to suppress and hold interest rates near zero, it purchased and held exceptionally large quantities of government securities and created sizable reserve liabilities well beyond the period of crisis. These policies contributed to episodes of asset and price inflation and notable misallocations of resources.
Also, the Fed has at times shown a reluctance to assert its authority to say “no” to monetizing the national debt. The ecosystem around monetary and fiscal policy — Congress, the Treasury, and Wall Street — has come to expect the Fed to make large purchases of Treasuries as a regular feature of monetary policy, not an exceptional response to extraordinary circumstances.
This pattern has left the central bank misaligned with its mandate and, in practical terms, less independent to pursue price stability, which is needed for maximum employment. The United States now faces, or is dangerously close to, fiscal dominance: a situation in which the central bank’s primary objective — stable prices — becomes subordinate to the Treasury’s financing needs.
The Scale of the Shift
To gauge where we stand, consider the following developments between 2005 and 2025:
The gross federal debt has grown nearly fivefold, from about $7.9 trillion to $39 trillion.
The Fed’s holdings of securities increased more than eightfold, from roughly $800 billion to $6.4 trillion.
The Fed’s reserve liabilities ballooned about 350-fold, from $8.4 billion to $3 trillion.
The Consumer Price Index rose roughly 1.7x.
The Standard & Poor’s 500 index surged about 5.5x.
These numbers underscore how susceptible the Fed is to fiscal dominance and how far monetary policy has drifted from a clear, price-stability mandate. If the Fed is to remain independent in any meaningful sense, it must withstand the gravitational pull of fiscal commitments and market expectations that encourage it to fund government outlays or to “lean with” debt issuance through monetary expansion.
A Framework for Boundaries
What, then, is the prudent path forward?
The core proposition remains that central bank independence must be preserved, but that there must also be clear, enforceable boundaries around its discretion. The aim is to ensure that the central bank can navigate normal economic cycles without structural political entanglement, while operating under a credible, durable constraint that prevents the kind of unbounded monetization that could erode price stability and long-term economic health.
A practical mechanism for achieving this balance between independence and constraint is to establish fixed boundaries on the central bank’s ability to create reserves or set interest rates.
The boundaries should be broad enough to allow the central bank to respond to typical macroeconomic conditions, but firm enough to deter persistent policy misalignment with price stability and financial stability objectives. Within this framework, temporary exceptions would be permitted to address urgent, unforeseen circumstances, but with a clear, time-bound return to preset limits to ensure that the exception does not become the rule. To remain outside the boundaries would require Congressional approval.
In short, central bank independence remains essential, but should be complemented by credible, legislated guardrails. These guardrails would do the following:
Preserve the central bank’s ability to conduct monetary policy through business cycles.
Prevent it from becoming a perpetual enabler of fiscal expansion and financial leverage via unlimited asset purchases or reserve creation.
Ensure that exceptions to the boundary rules are not a perpetual fixture but a temporary, auditable deviation with a clear path back to established constraints.
Strengthen the independence of price stability by disincentivizing the use of monetary policy to finance the fiscal deficit on an ongoing basis.
The ultimate objective is not to eliminate reasonable discretion but to protect the central bank’s credibility and the nation’s long-run economic health. A central bank that operates within transparent, enforceable boundaries is less vulnerable to short-term political cycles or self-imposed drift that distorts asset prices and misallocates resources.
The Case for Legislative Constraints
Critics will no doubt argue that Congress cannot be trusted with the responsibility to set such boundaries.
In my view, money and credit fall within the purview of Congress, and if the Fed seeks to pursue experimental or extreme monetary policy as a persistent feature, it should be subject to congressional authorization. No system is perfect, and insulating a central bank from short-term political pressures should be a priority.
However, allowing a central bank or any committee to operate without boundaries erodes the very independence being sought by increasing its susceptibility to political influence and undermining the core mandates of price stability, maximum employment, and long-term economic growth and stability. If we accept that central banks should have discretionary authority, we must also accept that such discretion cannot be unfettered.
Independence Requires Boundaries, Accountability, and Transparency
This is not an argument against independence. It is a means of disciplining independence — one that recognizes the potential costs of unchecked discretion and seeks to protect both the central bank’s credibility and the public’s confidence in the monetary regime.
In the end, independence without accountability risks drifting toward a policy that undermines its own aims. Boundaries, combined with accountability and transparency, are the prudent path to a stable and resilient monetary order.
[1] See, for example, Alberto Alesina and Lawrence H. Summers, “Central Bank Independence and Macroeconomic Performance: Some Comparative Evidence,” Journal of Money, Credit and Banking 24, no. 2 (1993); Alex Cukierman, “Central Bank Independence and Monetary Policymaking Institutions—Past, Present, and Future,” European Journal of Political Economy 24, no. 4 (2008); Francesco Giuli, Serena Ionta, Valeria Patella, “Monetary/Fiscal Policy Dominance and Conflicts: Evidence from Crises,” Economics Letters 257, (December 2025).