the debtors shall form five - member teams that , along with the bank ' s field workers , closely supervise the loans . peer pressures substitutes for collateral because the society ' s first eight mortgage have to start repaying the principals plus balance over a six - day period before the other players can rule out payments . the principal rate is fixed at 16 percent .
The first two borrowers must start repaying the principal plus interest over a six-week period.