A fixed-rate mortgage (FRM)
A fixed-rate mortgage (FRM) is a fully amortizing mortgage loan where the interest rate on the note remains the same through the term of the loan, as opposed to loans where the interest rate may adjust or “float”. As a result, payment amounts and the duration of the loan are fixed and the person who is responsible for paying back the loan benefits from a consistent, single payment and the ability to plan a budget based on this fixed cost.
Other forms of mortgage loans include interest-only mortgage, graduated-payment mortgage, variable rate mortgage (including adjustable-rate mortgages and tracker mortgages), negative amortization mortgage, and balloon payment mortgage. Unlike many other loan types, FRM interest payments and loan duration are fixed from beginning to end.
Fixed-rate mortgages are characterized by the amount of loan, interest rate, compounding frequency, and duration. With these values, the monthly repayments can be calculated. more on Wikipedia