What Is the OECD? Purpose, Members, and Global Impact

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The OECD, short for the Organisation for Economic Co-operation and Development (official British spelling), is an intergovernmental organization through which member governments compare economic and social data, review each other’s policies and agree on common standards. It does not lend money or issue binding laws. Its influence comes from research, statistics and policy recommendations that governments choose to adopt. Headquartered at the Château de la Muette in Paris, it has 38 member countries, most of them high-income, market-based democracies.

What Is the OECD?

The OECD’s stated purpose is to promote policies that improve economic growth, trade, employment and living standards.

Its roots are in postwar Europe. In 1948 European countries formed the Organisation for European Economic Co-operation (OEEC) to administer the largely U.S.-funded Marshall Plan for reconstruction. By the late 1950s that job was largely done, and members wanted a broader body that included North America. On December 14, 1960, 18 European countries plus the United States and Canada signed the convention creating the OECD, which replaced the OEEC when it came into force in 1961.

Membership later spread beyond Europe and North America, to Japan, Australia, Mexico, South Korea, Chile, Colombia and others. Costa Rica’s accession in 2021 brought the total to 38:

Australia, Austria, Belgium, Canada, Chile, Colombia, Costa Rica, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Israel, Italy, Japan, South Korea, Latvia, Lithuania, Luxembourg, Mexico, Netherlands, New Zealand, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey, the United Kingdom and the United States.

How the OECD Works

The governing body is the Council, made up of one representative per member country plus the European Commission. Council decisions are generally taken by consensus. Specialized committees cover areas such as economic policy, taxation, trade, education, environment and competition, and a Secretariat of economists, statisticians and lawyers in Paris supports them.

The work follows a repeating cycle:

1. Collect data. The OECD gathers statistics from member governments and harmonizes them so countries can be compared on the same basis, for example using purchasing power parity to compare output and prices across currencies.
2. Analyze and publish. Its reports include the twice-yearly Economic Outlook, country-by-country Economic Surveys and the PISA tests of student performance.
3. Peer review. Officials from other members examine one country’s policies and recommend changes. The pressure is reputational, not legal.
4. Set standards. Members negotiate guidelines and conventions, such as the Model Tax Convention used as a template for bilateral tax treaties, the Guidelines for Multinational Enterprises and the 1997 Anti-Bribery Convention.

Interpreting the OECD

Most OECD output is “soft law.” A recommendation commits governments politically, but the OECD cannot fine a country that ignores it. Formal conventions are the exception: they bind a country once it ratifies them under its own legal process. When a news story says “the OECD requires” something, check whether a treaty or national law has turned that standard into an obligation.

Why Is the OECD Important?

For economists and investors, the OECD is a major source of comparable cross-country statistics on GDP, inflation, employment, productivity, tax and education. Its growth forecasts are widely cited alongside those of central banks and the IMF.

Its largest practical impact has been in international tax. By 2009 every jurisdiction on the OECD’s list of uncooperative tax havens had committed to its transparency standards. With the G20 it then launched the Base Erosion and Profit Shifting (BEPS) project against multinationals moving profits to low-tax jurisdictions, avoidance the OECD estimated costs governments $100 billion to $240 billion in revenue each year. The follow-up “Pillar Two” agreement set a 15% global minimum effective tax rate for large multinational groups.

Example of the OECD

Hypothetical, simplified example of the global minimum tax. A multinational group falls within Pillar Two’s scope (consolidated revenue of at least €750 million). One subsidiary earns €100 million of profit in a country where it pays €5 million in tax, an effective rate of 5%.

• Minimum rate: 15%
• Shortfall: 15% − 5% = 10 percentage points
• Top-up tax: 10% × €100 million = €10 million

Under the rules, another country where the group operates can collect that €10 million top-up, unless the low-tax country raises its own tax first. The OECD designed the framework; each government applies it only after passing domestic legislation. Real calculations also adjust profits and taxes in ways this sketch leaves out.

Limitations of the OECD

• No enforcement power. Adoption depends on political will and varies by country.
• Limited membership. Several of the world’s largest economies, including China and India, are not members. India works with the OECD as a key partner but has not joined, so “OECD countries” is not a proxy for the global economy.
• Rich-country focus. Critics argue that standards negotiated mainly among high-income members can favor their interests, a point raised in debates over tax reform.
• Slow accession. Joining requires an invitation from the Council and a multi-year review in which committees assess a candidate’s laws and policies against OECD standards.

OECD vs. Similar Organizations

• OECD vs. IMF and World Bank: the IMF and World Bank lend money and can attach conditions. The OECD does not lend.
• OECD vs. WTO: the WTO administers binding trade rules and settles disputes. The OECD analyzes trade policy but has no dispute court.
• OECD vs. G20: the G20 is a forum of leaders with no permanent staff. It often asks the OECD to do the technical work, as with BEPS.
• OECD vs. BRICS: BRICS is a grouping of large emerging economies without a comparable secretariat, standards or peer reviews.

FAQs

The Bottom Line

Economists and investors rely on the OECD for comparable statistics on GDP, inflation, employment and tax, plus widely cited growth forecasts. Its standards matter most when national laws or ratified treaties turn them into obligations, as with the global minimum tax. China and India are not members, so OECD figures describe a group of mostly high-income economies rather than the world as a whole.