How does the Agricultural Bank of China calculate the interest rate? The three-month regular interest rate is 1.35 for 900 yuan. That is to say, the interest after three months is 900 multiplied by 1.35 to get more than 10 yuan.

3.04 yuan.

Interest is calculated according to the interest calculation formula.

1.35% is the annual interest rate. To calculate the interest for three months, you need to divide it by 12 to convert it into a monthly interest rate: interest = principal * term * interest rate = 900 * 3 * 1.35% / 12 = 3.04 yuan.