A 29-year-old mayor gave his city’s poorest residents $500 a month. Here's how they spent the money.

Aria Bendix

When Stockton Mayor Michael Tubbs suggested giving residents in his California city $500 a month with no strings attached, he wasn't floating a new idea. The system of paying someone for being alive — now known as universal basic income — stretches back to the 16th century. Tubbs got the idea from Dr. Martin Luther King, Jr., who proposed a guaranteed minimum income for citizens in 1967.

Today, it's still considered a radical approach. The system's critics say it reduces the incentive for people to find jobs and uses up government funds that could be better spent elsewhere.

Stockton Mayor Michael Tubbs

But the idea has gained a national platform in part thanks to presidential candidate Andrew Yang, who has promised to deliver payments of $1,000 per month, or $12,000 per year, to all US citizens over 18.

Tubbs' program, which started in February, could serve as a test case. For eight months, 125 Stockton residents living at or below the median income line (around $46,000 annually) have been getting $500 monthly stipends. The money is distributed through the mail in the form of debit cards.

This week, the city released the first set of data about the program. Most participants, it found, have been using their stipends to buy groceries and pay their bills.

Stockton's basic-income recipients spent the most money on food

On average, participants in Stockton's trial spent most of their stipends (around 40%) on food and another 24% on sales and merchandise, including trips to Walmart or dollar stores. Another 11% went to paying their utilities, and around 9% went to buying gas and repairing their cars.

That left around 16% to be divided among categories like medical expenses, transportation, education, insurance, recreation, and self-care.

Stockton California

AP Photo/Gosia Wozniacka, File

One resident, 48-year-old Zhona Everett, told the Associated Press that after paying her bills, she used the rest of the stipend to pay off her wedding ring and donate to her church. She also had enough money to go on a date with her husband, who works with her at the Tesla factory about 60 miles away.

"I was very excited to see it already working and making a difference in so many people's lives," Tubbs told Business Insider in April. "I'm now much more resolute in this idea that, if it's not a panacea ... it should be considered as one of the many solutions to ensure that people have an economic floor."

The data indicates that most of the program's participants — around 43% — have a full- or part-time job. Some are disabled and others stay home to care for children or an elderly parent. Only 2% are unemployed and not actively seeking work.

The program is designed to last for 18 months, so it still has about 10 months to go.

'Every time you do something new, it's scary'

The cities of Finland and Barcelona have also both launched basic income trials, and Sweden has set aside around $325,000 for a pilot experiment as well.

Tubbs' effort is the US' first major basic-income program. In 2012, his city became the first in the US to declare bankruptcy. Today, about a quarter of Stockton's population lives below the federal poverty line.

Michael Tubbs TED

Bret Hartman/TED

"I came into doing the pilot without a fully formed perspective — or as fully formed as it is now — but really more out of curiosity," Tubbs said in April. "If this was a solution that could work, I wanted to test it out."

Read more: A mayor is giving his city's poorest residents $500 a month, but he thinks there are still obstacles to rolling out basic income in the US

When he took office in 2016, Tubbs was just 26 years old, making him one of the youngest mayors in US history. He's now 29 and a soon-to-be father — something he said makes the mission of his basic-income trial feel even more urgent.

"Childcare costs are real," Tubbs said. "We're now looking at how are we going to save up to have somebody help us watch our child. It definitely has made me that much more passionate and that much more impatient with the status quo."

Tubbs said he was never too concerned about whether his basic-income idea would be controversial.

"My team was more nervous than I was," he said. "I honestly will tell you this, I didn't really see much risk."

But he did find himself explaining his idea to many constituents one-on-one, he added.

"Every time you do something new, it's scary," Tubbs said. "You have to convince people that, 'No, it's going to be okay. We're going to be safe. And we'll all be better off for it.'"

NOW WATCH: Here's how much you need to make to be in the top 1% of every state