Ballot committees force citizens to save, but pay no interest
Ali has been selling wall clocks and wristwatches in a crowded Karachi market for 15 years. He’s been participating in savings circles with fellow shopkeepers for just as long, and has used the proceeds to buy a car and acquire a new store.
https://www.bloomberg.com/news/articles/2013-01-17/in-pakistan-savings-circles-beat-banks