Singapore will slash its leaders' unpopular multi-million-dollar salaries by at least a third, new guidelines showed Wednesday, but they will remain the world's best-paid politicians.

Prime Minister Lee Hsien Loong, who promised the salary review to ease public anger that surfaced in landmark 2011 elections, will take a 36 percent reduction in basic pay to Sg$2.2 million ($1.69 million).

That is still the highest salary of any elected head of government in the world -- more than four times as much as Barack Obama who earns $400,000 a year as president of the United States.

The wealthy city-state's largely ceremonial president will see his salary reduced by 51 percent to Sg$1.54 million, while entry-levelcabinet members will receive half the premier's pay.

The cuts will be retroactive to the start of the current government's five-year term on May 21, 2011.

The People's Action Party (PAP), which has ruled Singapore since independence in 1965, has been on the defensive since its share of votes in the 2011 election fell to 60 percent, an all-time low.

Among the hottest issues facing the PAP was ministers' high pay, which the government has justified as necessary to attract talent from the private sector and to deter the corruption that afflicts other Asian countries.

Despite the salary cuts, all cabinet members will be entitled to a "National Bonus" of up to three months' pay if targets are met on economic growth, employment and improvement in Singaporeans' incomes.

Bonuses were already part of the previous pay scheme, which permitted a maximum of eight months' extra pay if economic growth exceeded 10 percent but none if growth dipped below 2.0 percent.

Critics immediately swamped online forums to slam the new salary scheme, which was recommended by an independent committee whose proposals Lee has agreed to implement.

"Ordinary minister's salary still higher than US President! Still too high! Pure Nonsense!" wrote a reader who signed off as Lim Lao Pe on the Yahoo! Singapore portal.

Singapore has the world's highest concentration of millionaire households, with 15.5 percent boasting at least $1 million in investable assets according to the Boston Consulting Group, but it also has one of the widest income gaps among developed economies.

Gerard Ee, a charity leader who headed the seven-month salary review, said the cuts showed political service should involve "sacrifice" but that pay should remain attractive enough to attract quality candidates.

Cabinet salaries had previously been pegged to two-thirds of the income of the top four earners in six fields: banking, accountancy, engineering, law, manufacturing and multinational corporations.

That meant ministers' pay could still rise despite economic recessions.

Under the benchmarks unveiled Wednesday, the salary of an entry-level cabinet minister is set at 60 percent of the median income of the 1,000 highest-earning Singaporean citizens, which amounts to Sg$1.1 million.

Popular local satirist Mr Brown wrote on Twitter: "Why must ministerial salaries be pegged to the Top 1000 earners of Singapore? Why not the lowest 1000? You help the poorest, you make more."

Political analyst Seah Chiang Nee said the salary cuts indicate a "serious effort to address people's concerns" but that the government should be more transparent about bonuses, allowances and other perks.

A more transparent system would be to publish how much the ministers earned before in total -- including all the perks -- and how much they will receive under the new guidelines, he told AFP.

Despite the cuts, Singapore's top officials are still among the best paid in the world.

Hong Kong chief executive Donald Tsang earns roughly $543,500 annually and the Japanese prime minister gets about $513,000 a year.

Australia's Prime Minister Julia Gillard currently earns about Aus$367,000 ($379,000) a year but is in line for a 31 percent rise.