Fixed-rate loan: With such a credit, the interest rate, and thus the monthly repayment, remain the same throughout the life of the credit. The counterpart of such stability is usually reflected by a rate slightly above the variable rate.
Variable-rate loan: In the case of the variable-rate loan, the interest rate of the credit fluctuates according to a reference index determined at the contract signature. In other words, monthly repayments will evolve based on interest rates up or down. With the variable rate, you do not know in advance the total cost (sum of interest) of your mortgage.
Reviewable fixed-rate loan: In this case, you start to repay your mortgage at a fixed rate and for a period of time agreed in advance (3, 5 or 10 years). At the end of the defined period, the interest rate is reviewed. It can be fixed again for a given period of time, or replaced by a variable rate.