If successful, the scheme would represent the largest trial run anywhere in the world

Highlights Sikkim announced plans to implement a universal basic income for citizens

It is a regular, guaranteed income paid by the government to people

Aim is to replace confusing array of assistance schemes with cash

High in the Himalayas, Sikkim is one of the tiniest states in India. But it is about to embark on an experiment of global interest.

Sikkim's ruling party has announced an ambitious plan to implement a universal basic income for every one of its 610,577 citizens.

If successful, the scheme would represent the largest trial run anywhere in the world of a concept that supporters like Facebook's Mark Zuckerberg say could provide a safety net, help alleviate poverty and address the challenge of job automation. Detractors, meanwhile, say it would reduce the incentive to work and would come at a huge expense.

A universal basic income is a regular, guaranteed income paid by the government, universally and unconditionally, to all citizens. It is a cash payment that aims to replace the often-confusing array of assistance states offer to citizens and places spending decisions in the hands of the recipients.

"If there is one chance of it happening anywhere, it is Sikkim," said P.D. Rai, the sole member of India's parliament from the state. Sikkim already has a progressive track record: it was one of the first Indian states to ban plastic bags way back in 1998 - a ban that it has managed to implement successfully unlike many other states. It has also provided housing for all its citizens. Most recently, it became the country's first organic state, eliminating the use of pesticides and fertilizers.

Its social indexes also stand out from the rest of the country, with a literacy rate of 98 percent, and it has managed to significantly bring the percentage of people living below the poverty line to just about 8 percent - compared to nearly 30 percent nationally. Sikkim's small geographic area and low population density have been responsible, in part, for its success.

Sikkim Chief Minister Pawan Chamling has started an experiment of global interest.

Rai acknowledges that there will be challenges. "It's a matter of political will ultimately," he said. "With the rise of global inequality, we want to ensure that we bridge the gap." Rai declined to reveal how much the program, which was announced ahead of upcoming elections this spring, would potentially cost the state. The tourism and power sectors will be tapped to raise the resources. With over 2.5 million tourists coming annually, tourism is a major source of revenue. Being a surplus power generating state, Sikkim sells 90 percent of its hydropower. For now, he said, the government is holding meetings with experts and stakeholders and expects to roll out the scheme by 2022.

India has a large existing social security apparatus: the central government alone spends 5 percent of GDP spent on 950 schemes. These range from free rice, an allowance to build houses and even guaranteed employment for some living in rural areas. But inefficient implementation and diversion of funds due to corruption have long plagued the system, leading many to propose a universal basic income as a possible solution. India's Economic Survey for 2017 highlighted the concept as a "powerful idea" that should be debated.

Elsewhere in the world, there have been several small-scale experiments with implementing a universal basic income, but they have met with limited success. In April 2017, the government of Ontario in Canada announced a pilot project involving 4,000 people that would have cost 150 million Canadian dollars. The project ended abruptly for being "expensive and unsustainable" after a year when the local government changed.

In Finland, an experiment with universal basic income similarly ended last year before its completion. The trial included a $630 monthly payment to 2,000 unemployed citizens.

In the United States, meanwhile, the concept has been floated in Stockton, California by its young mayor. Last year, it announced that 100 residents would receive $500 a month for 18 months.

The notion of a universal basic income has found backers in Silicon Valley, with tech moguls like Mark Zuckerberg and Elon Musk endorsing it. In his Harvard commencement address in 2017, Zuckerberg spoke of the need for a "new social contract," with ideas like a basic income to provide a "cushion" for everyone. Musk has described it as a "necessary" step as automation takes over human jobs.

A universal basic income is a regular, guaranteed income paid by the government, universally and unconditionally, to all citizens

But economists have pointed to various possible pitfalls. Some question whether giving cash instead of something like a food subsidy would lead to spending on wasteful items. Plus as prices rise, a cash handout would buy fewer goods. Others say a basic income would disincentivize work, raising the possibility of a shrinking labor force.

Hailing Sikkim's initiative, Pranab Bardhan, an economist at the University of California, Berkeley, said that the rationale behind a universal basic income in a place like Sikkim is very different from a place like Stockton.

"In developed countries, the main purpose is to restructure or economize the existing welfare schemes, like unemployment benefits," said Bardhan. "In low- or mid-income countries, like India, the rationale will be to address the minimum economic insecurity of a larger section of the population, not just the poorest, without touching the existing anti-poverty measures."