You can choose between an annuity and a schedule with equal payments of principal.
According to the annuity schedule, the loan payment is the same every month until the end of the loan period. In the initial period of the loan, it consists mostly of interest, but with each subsequent monthly payment, the share of the principal increases. We calculate interest on the loan balance.
In a schedule with equal principal payments, the principal of the loan is divided into equal parts, plus interest. Because we calculate the interest on the loan balance, your repayment becomes smaller every month.
Thus, the annuity schedule is characterized by uniform payments throughout the loan period and, in general, a higher amount of interest. According to the fixed principal schedule, repayments are higher at the beginning of the loan period, but they decrease steadily and ultimately a lower amount of interest is charged.