One argument for an independent central bank is:

The argument for an independent central bank largely rests on the principle that effective monetary policy requires a focus on long-term economic stability rather than short-term political considerations. An independent central bank is insulated from the immediate pressures of electoral cycles, allowing it to set monetary policy with a long time horizon in mind. This long-term perspective is critical because many monetary policy measures, such as interest rate adjustments, take time to permeate through the economy and achieve their intended effects.

When central banks are tied closely to political leadership, they might make decisions that are aimed at achieving short-term goals to satisfy voters, rather than what is necessary for sustainable economic growth. This could lead to mismanagement of inflation or employment rates. Thus, the independence allows central bankers to prioritize the health of the economy over political expediency, fostering conditions that promote stable growth and controlled inflation over time.