Uruguayan president Jose Mujica said his wealth adds up to 322,883 US dollars.
Nearly a third of that is cash, kept in three bank accounts that he did not previously declare.
Mr Mujica's insistence on living simply has earned him the nickname "the poorest president in the world", but his sworn declaration this year shows zero debts and a 74 per cent increase in wealth since 2012.
The form he submitted to Uruguay's transparency and public ethics board does not require Mr Mujica to declare the source of the 103,451 US dollars in cash he says he now keeps in banks.
The joint annual income he makes with his wife, Senator Lucia Topolansky, totals 229,450 US dollars, and they declared no debts, owning their land and cars outright.
Most of the cash is in two accounts at the Banco Republica Oriental de Uruguay, while another 14,062 US dollars is kept in an account at Bandes, a Venezuelan development bank.
Mr Mujica has said that he habitually donates most of his income.
In the "observations" section of the form, Mr Mujica writes in longhand that since becoming president in 2010, he has given about 25,500 US dollars in cash and 60,348 US dollars in heavy equipment to Plan Juntos, a housing organisation supported by the ruling Broad Front coalition, and donated 86,068 US dollars to the coalition itself.
Mr Mujica and Ms Topolansky are former leftist guerrillas who often speak out against greed and consumerism, and say they learned to live on very little during their long years in prison under Uruguay's 1973-1985 dictatorship.
They gave up a chance to live in the luxurious presidential mansion after he was elected four years ago, staying instead on their ramshackle flower farm, which Mr Mujica declared to be worth about 108,000 US dollars (£64,000). They share ownership in two other properties as well.
Mr Mujica also declared three tractors, each worth more than his two 1987 Volkswagen Beetles, which together are valued at about 4,750 US dollars (£2,830).
Uruguay's 42,000 public officials have to make sworn wealth declarations every two years, but only the top two are required to make them public.
Vice President Daniel Astori says he is worth 389,000 US dollars (£232,000).