Fair4All Finance was set up 2019 by the government, and campaigns to make financial products available to a wider group of people.
The research was carried out in collaboration with polling firm Ipsos, and included people from England, Scotland and Wales.
It found that younger adults, households with children, and people on zero-hours contracts or in lower-paid work are most likely to borrow from friends and family.
The research also showed that a quarter of all households would not be able to afford a £500 emergency bill without borrowing.
But the flow of cash is not all in one direction for Carla and her mum Val. They live close by in Merseyside, and regularly have to borrow from each other.
"We do it all the time. If I need £50 just to get a few bits to tide me over," Carla said.
"Two weeks later she'll be short so I give that back and if she needs a bit extra I give it to her."
Carla has been turned down for a loan in the past and struggled to get a phone contract, so Val has been happy to help.
Carla has also seen her mum pawn her grandmother's rings in the past.
"I was crying my eyes out, saying mum why didn't you ask me?" she said, adding that she wants to help her mum whenever she can, and has paid for her mum's gas and electricity bills in the past.
The pair said it has not impacted their relationship, and have never charged each other interest, but they have seen it go wrong for others.
"Some people say they'll pay you back but then they don't. Then they're messing it up for themselves," Carla added.