{"id":35619,"date":"2025-04-10T06:00:00","date_gmt":"2025-04-10T06:00:00","guid":{"rendered":"https:\/\/onequity.com\/what-are-central-banks-and-how-do-they-work\/"},"modified":"2025-07-21T08:18:56","modified_gmt":"2025-07-21T08:18:56","slug":"what-are-central-banks-and-how-do-they-work","status":"publish","type":"post","link":"https:\/\/insights.onequity.com\/es\/what-are-central-banks-and-how-do-they-work\/","title":{"rendered":"What Are Central Banks and How Do They Work?"},"content":{"rendered":"\n

Just as with a country’s economy, investment performance is linked to the decisions made by the central bank. In this article, you will discover how and why you should take monetary policies into account when thinking about a strategy.<\/p>\n\n\n\n

What Is a Central Bank?<\/strong><\/h2>\n\n\n\n

Central banks are financial entities responsible for managing a currency<\/a> and for forming and applying monetary policy, whether for a country or a specific economic region. These are centralized and autonomous institutions with certain privileges. In simple terms, they are the banks of the state and of commercial banks.<\/p>\n\n\n\n

Although the separation between the central bank and the government is not the same in all countries\u2014as is the case with nationalized central banks\u2014these entities generally operate independently and maintain neutrality in the face of political influence. Because they are not subject to shareholder intervention, as in private banking, they are not dependent on market forces.<\/p>\n\n\n\n

Central banks play a key role in national economies, and in some cases, their decisions can have effects beyond their borders\u2014even globally. To understand how this happens, we analyze their most relevant functions and characteristics below.<\/p>\n\n\n\n

Functions of a Central Bank<\/strong><\/h2>\n\n\n\n

The most important function of a central bank is to maintain price stability, which means ensuring that annual price variations remain within estimated levels. In some economies, such as the Eurozone and the UK, this means keeping inflation\u2014an increase in prices\u2014below 2%. To exercise monetary policy and influence inflation<\/a> levels and economic growth, central banks use several mechanisms:<\/p>\n\n\n\n

Issuing Money<\/strong><\/h3>\n\n\n\n

The central bank holds the exclusive right to issue currency and is responsible for distributing money into the market, whether within a single country or across a region, such as the eurozone. In this context, it\u2019s important to note that the European Central Bank (ECB) operates in coordination with the national central banks of eurozone countries.<\/p>\n\n\n\n

Interest Rates<\/strong><\/h3>\n\n\n\n

Another way to control the money supply is through the reference interest rate, which the central bank sets. Interest rates represent the \u201ccost\u201d of money\u2014the rate at which commercial banks can borrow from or deposit money with the central bank. Based on this rate, commercial banks set their own interest rates for the public, including savings and mortgage rates.<\/p>\n\n\n\n

The Reserve Rate<\/strong><\/h3>\n\n\n\n

Commercial banks are required to hold a portion of customer deposits as reserves with the central bank. This percentage, known as the reserve rate, is set by the central bank. By adjusting this rate, the central bank can influence the amount of money circulating in the economy\u2014reducing liquidity when reserves are high and increasing it when reserves are low.<\/p>\n\n\n\n

Official Reserves<\/strong><\/h3>\n\n\n\n

Central banks manage the nation’s foreign currency reserves, which may include assets like securities, government bonds, foreign currencies, and precious metals<\/a>. These reserves help cover debt obligations and financing needs and allow the central bank to influence the exchange rate by buying or selling foreign currency to stabilize the national currency\u2019s value.<\/p>\n\n\n\n

Open Market Operations<\/strong><\/h3>\n\n\n\n

Through open market operations (OMO), central banks buy and sell financial assets in secondary markets. This is a key tool<\/a> used to inject or withdraw liquidity from the market and manage the money supply.<\/p>\n\n\n\n

The Most Influential Central Banks<\/strong><\/h2>\n\n\n\n

Although each country has its own central bank, some wield greater influence over the global economy:<\/p>\n\n\n\n