Title: Economy of Cuba
Content:  From 1994 until 2021, Cuba had two official currencies: the national peso (or CUP) and the convertible peso (or CUC, often called "dollar" in the spoken language). In January 2021, however, a long-awaited process of currency unification began, with Cuban citizens being given six months to exchange their remaining CUCs at a rate of one to every 24 CUPs. In 1994 the possession and use of US dollars was legalised, and by 2004 the US dollar was in widespread use in the country. To capture the hard currency flowing into the island through tourism and remittances – estimated at $500–800 million annually – the government set up state-run "dollar stores" throughout Cuba that sold "luxury" food, household and clothing items, compared with basic necessities, which could be bought using national pesos. As such, the standard of living diverged between those who had access to 
Title: Cuban peso
Content:  The Cuban peso (in Spanish peso cubano, ISO 4217 code: CUP) also known as moneda nacional, is the official currency of Cuba. The Cuban peso historically circulated at par with the Spanish-American silver dollar from the 16th to 19th centuries, and then at par with the U.S. dollar from 1881 to 1959. The Castro regime then introduced the socialist planned economy and pegged the peso to the Soviet ruble. The Soviet Union's collapse in 1991 resulted in a Special Period of difficult economic adjustments for Cuba. From 1994 to 2020 the Cuban peso co-circulated with the Cuban convertible peso (ISO 4217 code "CUC"; colloquially called "kook" in contrast to the CUP or "koop"), which was convertible to and at fixed 
Title: Cuba
Content:  economic reform in January 2021, the minimum wage is about 2100 CUP (US$84) and the median wage is about 4000 CUP (US$166). Cuba has Cuban pesos (CUP) set at par with the US dollar. Every Cuban household has a ration book (known as libreta) entitling it to a monthly supply of food and other staples, which are provided at nominal cost. In 2016, the Miami Herald wrote, "... about 27 percent of Cubans earn under $50 per month; 34 percent earn the equivalent of $50 to $100 per month; and 20 percent earn $101 to $200. Twelve percent reported earning $201 to $500 a month; and 
Title: Cuban peso
Content:  Before 1857, Spanish and Spanish colonial reales circulated in Cuba. From 1857, banknotes were issued specifically for use on Cuba. These were denominated in pesos, with each peso worth 8 reales. From 1869, decimal notes were also issued denominated in centavos, with 100 centavos for each peso. In 1881, the peso was pegged to the US dollar at par. The currency continued to be issued only in paper form until 1915, when the first coins were issued. In 1960, the peso lost value after the United States imposed an embargo against Cuba and the suspended the sugar quota. Fidel Castro then introduced the socialist planned economy to Cuba with the Soviet Union 
Title: Cuban peso
Content:  the U.S. dollar, and which was generally available to the public at a rate of US$1 = CUC 1 = CUP 25. State enterprises under the socialist planned economy, though, were entitled to exchange CUPs into CUCs and U.S. dollars at the official, subsidized rate of US$1 = CUC 1 = CUP 1. From 1 January 2021 Cuba implemented the so-called "Day Zero" of monetary unification which abolished the Cuban convertible peso as well as the 1 CUP/USD rate for state enterprises. Henceforth the Cuban Peso became the only legal tender in Cuba, CUCs were converted at the rate of 24 CUP/CUC, and a single official exchange rate of 24 CUP/USD became applicable for both public and private transactions.
Title: Cuban convertible peso
Content:  The convertible peso (sometimes given as CUC$ and informally called a cuc or a chavito) was one of two official currencies in Cuba, the other being the Cuban peso. It had been in limited use since 1994, when its value was pegged 1:1 to the United States dollar. On 8 November 2004, the U.S. dollar ceased to be accepted in Cuban retail outlets and left the convertible peso as the only currency in circulation in many Cuban businesses. Officially exchangeable only within the country, its value was increased to US$1.08 in April 2005, but reverted to US$1.00 on 15 March 2011. The convertible peso was, by the pegged 
Title: Economy of Cuba
Content:  and those without. Jobs that could earn dollar salaries or tips from foreign businesses and tourists became highly desirable. It was common to meet doctors, engineers, scientists and other professionals working in restaurants or as taxicab drivers. However, in response to stricter economic sanctions by the US and because the authorities were pleased with Cuba's economic recovery, the Cuban government decided in October 2004 to remove US dollars from circulation. In its place, the convertible peso was created, which although not internationally traded, has a value pegged to the US dollar 1:1. A 10% surcharge is levied for cash conversions from US dollars to the convertible peso, which does not apply to other currencies, so it acts as an encouragement for tourists to bring currencies such as Euros, pounds sterling or Canadian dollars into Cuba. An increasing number of tourist zones accept Euros.
Title: Cuban peso
Content:  its new economic partner, and the Cuban peso was pegged to the Soviet ruble (at CUP 1 = US$1 = 4 old rubles before 1961, and afterwards at CUP 1 = US$1 = 0.90 SUR or new ruble). Foreign exchange was a government monopoly under the socialist planned economy and cannot be bought by the general public using Cuban pesos. Foreign currencies were therefore exchanged for coins of the Instituto Nacional de Turismo (INTUR) from 1981-1989 and for foreign exchange certificates of the Banco Nacional de Cuba from 1985. These coins or certificates were then used by visitors to buy some luxury goods not available for purchase in the national currency.
Title: Cuban peso
Content:  to pay for petroleum and other imported goods which used to be easily procured from Cuba's former benefactor. The U.S. dollar was made legal tender to encourage much-needed hard currency to enter the economy, and the Cuban peso lost much of its value with its free market exchange rate plunging to as low as 125 CUP/USD. In 1994 the Cuban convertible peso (or CUC; popularly called "kook") was introduced at par with the US dollar and circulated alongside it. Partial revival of economic confidence then stabilized the Cuban peso (henceforth called "koop") to 23-25 CUPs to the CUC or USD, 
Title: Cuban convertible peso
Content:  because the amounts of U.S. dollars being exchanged were more than anticipated. The measure helped the Cuban government collect hard currency. From 2014, state-owned shops began to set the prices in both CUC and CUP, and accept payment in either. The 10% surcharge was removed in July 2020. Cuba's economic difficulties since the end of 2019 have resulted in shortages of goods in CUP and CUC stores, the opening of stores priced in US dollars and only accepting payment by cards backed by foreign currencies, the waiving of the 10% penalty for exchanging US dollars, the resumption of US dollars as unofficial medium of exchange, and the plunge in the value of the CUC below US$1 in unofficial street exchanges.

Question: what money does cuba use?
Answer: Cuban peso.