1, loan interest = loan principal (20,000 yuan) multiplied by loan time (from loan date to repayment date, 365 days a year) multiplied by loan interest rate (interest rate set on the receipt, daily interest rate =XX %/360).

2. Late payment fee = loan interest multiplied by 20% (as agreed in the loan contract)

If you want to repay the overdue fine of more than 1+2, you can contact the local credit cooperative, and there may even be a discount.

Borrow and pay back, be honest and trustworthy