The economy of Mauritania is still largely based on agriculture, slave labour and livestock, even though most of the nomads and many subsistence farmers were forced into the cities by recurring droughts in the 1970s and 1980s.

Mauritania has extensive deposits of iron ore, which account for almost 50% of total exports. The decline in world demand for this ore, however, has led to cutbacks in production. With the current rise in metal prices, gold and copper mining companies are opening mines in the interior.

The nation's coastal waters are among the richest fishing areas in the world, but overexploitation by foreigners threatens this key source of revenue. The country's first deep water port opened near Nouakchott in 1986.

In recent years, drought and economic mismanagement have resulted in a buildup of foreign debt. In March 1999, the government signed an agreement with a joint World Bank-International Monetary Fund mission on a $54 million enhanced structural adjustment facility (ESAF). The economic objectives have been set for 1999–2002. Privatization remains one of the key issues.

This is a chart of trend of gross domestic product of Mauritania at market prices estimated by the International Monetary Fund with figures in millions of Mauritanian Ouguiyas.

Year	Gross Domestic Product	US Dollar Exchange	Inflation Index (2000=100)
1980	37,211	45.93 Ouguiyas	23
1985	60,197	77.07 Ouguiyas	36
1990	97,819	80.64 Ouguiyas	52
1995	158,443	129.76 Ouguiyas	73
2000	258,245	240.00 Ouguiyas	100
2005	514,642	265.55 Ouguiyas	144

Current GDP per capita of Mauritania grew 82% in the Sixties reaching a peak growth of 166% in the Seventies. But this proved unsustainable, and growth consequently scaled back to 14% in the Eighties. Finally, it shrank by 29% in the Nineties. Mean wages were $0.97 per man-hour in 2009.

The following table shows the main economic indicators in 1990–2017.

Year	GDP (in bil. US$ PPP)	GDP per capita (in US$ PPP)	GDP (in bil. US$ nominal)	GDP growth (real)	Inflation (in Percent)	Government debt (Percentage of GDP)
1990	3.75	1,880	1.79	...	...	...
1995	4.86	2,118	2.09	9.8%	6.5%	...
2000	5.91	2,235	1.78	−0.4%	3.3%	234%
2005	8.32	2,731	2.94	9.0%	12.1%	155%
2006	10.20	3,453	4.01	18.9%	6.2%	83%
2007	10.76	3,545	4.33	2.8%	7.2%	73%
2008	11.09	3,556	5.14	1.1%	7.5%	78%
2009	11.06	3,454	4.73	−1.0%	2.2%	90%
2010	11.73	3,571	5.64	4.8%	6.3%	81%
2011	12.53	3,720	6.78	4.7%	5.7%	72%
2012	13.51	3,911	6.72	5.8%	4.9%	74%
2013	14.56	4,116	7.33	6.1%	4.1%	71%
2014	15.64	4,321	6.62	5.6%	3.8%	80%
2015	15.95	4,304	6.18	0.8%	0.5%	98%
2016	16.42	4,328	6.41	1.6%	1.5%	99%
2017	17.25	4,444	6.83	3.2%	2.3%	91%

In 2007, mining industries accounted for well over 35 percent of the Mauritanian economy, with the fish industry so much as 54% (with big changes between these industries in the power relationship). Diversification of the economy into non-mining industries remains a long-term issue. Mauritania is a net importer of food, reportedly importing 70% of its domestic food needs.

In 2015, Kosmos Energy made significant natural gas discoveries on the maritime border between Senegal and Mauritania, and in December 2016, it entered into partnership with British Petroleum. The two companies, along with Mauritanian and Senegalese governments and the two countries' national oil companies, are optimistic about the potential of these gas discoveries. The Grand Tortue/Ahmeyim reserves are estimated at 15 trillion cubic feet. According to BP, 'that's equivalent to all of Africa's current gas production for nearly seven years.' The production phase will begin in 2022, starting with 2.3 million tons annually.

In February 2006, the new Mauritanian government denounced amendments to an oil contract made by former Leader Ould Taya with Woodside Petroleum, an Australian company. In 2004, Woodside had agreed to invest US$600 million in developing Mauritania's Chinguetti offshore oil project. The controversial amendments, which Mauritanian authorities declared had been signed "outside the legal framework of normal practice, to the great detriment of our country", could cost Mauritania up to $200 million a year, according to BBC News. Signed by Woodside two weeks after the February 1, 2005, legislation authorizing the four amendments, they provided for a lower state quota in the profit-oil, and reduced taxes by 15 percent in certain zones. They also eased environmental constraints and extended the length and scope of the exploitation and exploration monopoly, among other measures.

The disputed amendments were signed by former Oil Minister Zeidane Ould Hmeida in February 2004 and March 2005. Hmeida was arrested in January 2006 on charges of "serious crimes against the country's essential economic interests".

Nouakchott's authorities declared that the government would likely seek international arbitration, which Woodside (which operated for Hardman, BG Group, Premier Oil, ROC Oil, Fusion, Petronas, Dana Petroleum, Energy Africa and the Hydrocarbons Mauritanian Society) also contemplated.

Discovered in 2001, Chinguetti has proven reserves of about 120,000,000 barrels (19,000,000 m) of oil. At the end of December 2005, authorities estimated that in 2006, the oil profits would be 47 billion ouguiyas (about US$180 million) and represent a quarter of the state budget, according to RFI.

Some U.S. oil companies are alleged to be playing a part in Mauritania's oil related corruption.

Mauritania has 380 MW of generating capacity, of which 263 MW are fossil fuels and 117 MW are renewable. Its sunny weather makes solar power highly favorable, and eight plants totaling 16.6 MW were installed with the support of Masdar in 2016.

• List of companies based in Mauritania
• United Nations Economic Commission for: Africa & Western Asia

https://en.wikipedia.org/key/Slavery_in_Mauritania

 This article incorporates public domain material from The World Factbook. CIA.

• Mauritania latest trade data on ITC Trade Map
• Katsarova, Ivana. "EU-Mauritania fisheries agreements" (PDF). Library Briefing. Library of the European Parliament. Retrieved 17 June 2013.

21°17′43″N 15°54′27″W / 21.29528°N 15.90750°W / 21.29528; -15.90750