2.1% to 18%. According to the inquiry of official website of Guiyang Bank, it is known that the cash installment interest rate is divided by using the UnionPay credit card of Guiyang Bank. The interest rate for the third installment is 2.1%, the interest rate for the sixth installment is 4.5%, the interest rate for the ninth installment is 6.8%, the interest rate for the 12th installment is 8.1%, the interest rate for the 18th installment is 13.5%, and the interest rate for the 24th installment is 18.%. Frank loan is a loan product launched by Guiyang Bank. Its product features pure credit, no mortgage and online processing in the whole process. The maximum loan amount can reach 2, yuan and the longest loan period can reach 36 periods.