central bank mandate

Hand someone immense power and you had better tell them exactly what to use it for. A central bank can create money and move interest rates, so the law (or the government) gives it a written job description — its mandate. The mandate is the set of official goals the bank is supposed to pursue, the yardstick by which it is judged. Without one, a bank could chase any goal it liked, and the public would have no way to hold it accountable.

Most modern central banks have price stability — keeping inflation low and steady, often around a 2 percent target — as their primary or sole mandate. The reasoning is that stable prices are the best long-run contribution a central bank can make to a healthy economy. Some banks have a 'dual mandate': the U.S. Federal Reserve, for example, is legally charged with pursuing both maximum employment and stable prices. When those two goals conflict — say, inflation is high but unemployment is also rising — a dual-mandate bank must weigh them against each other, which is one of the hardest judgment calls in economics.

The mandate matters because it shapes every decision. A bank focused only on inflation may raise rates aggressively even if it costs jobs; a dual-mandate bank may tolerate slightly higher inflation to protect employment. The mandate is also why independence works: society agrees on the goal in advance, then lets experts pursue it free from short-term politics. The honest limit is that some goals (like 'maximum employment') are genuinely hard to define and measure, leaving real room for debate about whether a bank is meeting its mandate.