Trinidad and Tobago is one of the wealthiest and most developed nations in the Caribbean and is listed in the top 40 (2010 information) of the 70 High Income countries in the world. It has one of the highest GDP per capita of USD $20,300 (2011) in the Caribbean.[43] In November 2011, the OECD removed Trinidad and Tobago from its list of Developing Countries.[44] Trinidad's economy is strongly influenced by the petroleum industry. Tourism and manufacturing are also important to the local economy. Tourism is a growing sector, although not proportionately as important as in many other Caribbean islands. Agricultural products include citrus, cocoa, and other products.

Recent growth has been fueled by investments in liquefied natural gas (LNG), petrochemicals, and steel. Additional petrochemical, aluminum, and plastics projects are in various stages of planning. Trinidad and Tobago is the leading Caribbean producer of oil and gas, and its economy is heavily dependent upon these resources but it also supplies manufactured goods, notably food and beverages, as well as cement to the Caribbean region.

Graphical depiction of Trinidad and Tobago's product exports in 28 colour-coded categories.Oil and gas account for about 40% of GDP and 80% of exports, but only 5% of employment. The country is also a regional financial centre, and the economy has a growing trade surplus.[9] The expansion of Atlantic LNG over the past six years created the largest single-sustained phase of economic growth in Trinidad and Tobago. It has become the leading exporter of LNG to the United States, and now supplies some 70% of U.S. LNG imports.[45]

Trinidad and Tobago has transitioned from an oil-based economy to a natural gas based economy. In 2007, natural gas production averaged 4 billion cubic feet per day (110,000,000 m3/d), compared with 3.2×106 cu ft/d (91,000 m3/d) in 2005. In December 2005, the Atlantic LNG fourth production module or "train" for liquefied natural gas (LNG) began production. Train 4 has increased Atlantic LNG's overall output capacity by almost 50% and is the largest LNG train in the world at 5.2 million tons/year of LNG.

Trinidad and Tobago's infrastructure is good by regional standards.[original research?] The international airport in Trinidad was expanded in 2001. There is an extensive network of paved roads with several good four and six lane highways including one controlled access expressway. The Ministry of Works estimates that an average Trinidadian spends about four hours in traffic per day.[citation needed] Emergency services are reliable, but may suffer delays in rural districts.[citation needed] Private hospitals are available and reliable.[citation needed] Utilities are fairly reliable in the cities.[citation needed] Some areas, however, especially rural districts, still suffer from water shortages.[citation needed]

Telephone service is relatively modern and reliable.[original research?][citation needed] Cellular service is widespread and has been the major area of growth for several years. Telecommunications Services of Trinidad and Tobago Limited (generally known as TSTT) is the largest telephone and Internet service provider in Trinidad and Tobago. The company, which is jointly owned by the Government of Trinidad and Tobago and Cable & Wireless, was formed out of a merger of Telco (Trinidad and Tobago Telephone Company Limited) and Textel (Trinidad and Tobago External Telecommunications Company Limited). TSTT no longer holds a monopoly in fixed-line telephone services due to Flow introducing a fixed-line service of their own, and their cellular monopoly was broken in June 2005 when licences were granted to Digicel and Laqtel. Laqtel however never started business.