Loan1.2000, monthly payment 558 1.43 yuan. Monthly payment = principal * monthly interest rate /( 1-( 1+ monthly interest rate)) (-number of repayment periods). If the loan interest rate is 3.5% and the repayment period is 30 years, the monthly loan1.200,000 yuan is: monthly loan =1.200,000 * 0.035/(1-(1.035)) = 50. Formal loan platforms: Ant Borrowing, JD.COM Gold Bar, Du Xiaoman and 360 IOUs. Ant borrowing is a credit consumption loan provided by ant consumer finance for ordinary consumers. Depending on the sesame credit score, the loan amount ranges from 1000 to 300,000. The daily interest rate of the loan is between 1.5 and six ten thousandths; Can be stored for 3 months, 6 months, 12 months.