Legal analysis: The bank’s loan interest rate is 6 per year. For 40,000 yuan, the interest is 40,000×0.06=2,400. The monthly interest is nearly 200. If the principal and interest are equal, the principal is 40000/12=3333. In this way, the monthly repayment is about 3333 200 = 3533. The interest rates of each bank will fluctuate up and down. Whether it's half-yearly or one-year depends on what kind of contract you sign.

Legal basis: "The People's Republic of China and the Civil Code"

Article 667: The loan contract means that the borrower borrows money from the lender and returns the loan and pays when due interest contract.

Article 680: Lending at high interest rates is prohibited, and the interest rate for borrowing must not violate relevant state regulations. If the loan contract does not stipulate the payment of interest, it will be deemed that there is no interest. If the loan contract does not clearly stipulate the payment of interest, and the parties cannot reach a supplementary agreement, the interest will be determined according to local or party transaction methods, transaction habits, market interest rates and other factors; if the loan is borrowed between natural persons, it will be deemed to have no interest.