A fixed-rate mortgage is a home loan where the interest rate remains the same for the entire term of the loan. Whether you choose a 15-year or 30-year term, your monthly principal and interest payment never changes — providing financial predictability and stability that many homeowners value. Fixed-rate mortgages are the most popular loan type in the United States, accounting for the vast majority of all residential mortgage originations.
The 30-year fixed-rate mortgage is the most common variant. It spreads payments over 360 months, resulting in lower monthly payments compared to shorter terms. The trade-off is that you pay significantly more interest over the life of the loan. For example, on a $350,000 loan at 6.5%, the 30-year option costs approximately $2,212 per month with total interest of about $446,000 over the full term. A 15-year fixed at 5.75% would cost approximately $2,906 per month but only $173,000 in total interest — saving over $273,000. Use Beycome's mortgage calculator to compare different term lengths.
While the principal and interest portion of a fixed-rate mortgage payment never changes, the total monthly payment may fluctuate slightly over time. This is because property taxes and homeowners insurance — which are collected through the escrow account — can increase or decrease. When taxes or insurance rates change, the escrow portion of the payment adjusts accordingly. However, the core mortgage payment remains locked in.
Fixed-rate mortgages are ideal for buyers who plan to stay in the home long-term and value payment predictability. They are especially attractive during periods of low interest rates because the borrower locks in that low rate for the entire loan life. In contrast, an adjustable-rate mortgage (ARM) offers a lower initial rate but carries the risk of future rate increases. The choice between fixed and adjustable depends on your financial situation, how long you plan to keep the loan, and your tolerance for payment variability.
At closing, the fixed rate and monthly payment are documented on the promissory note and closing disclosure. The closing disclosure clearly states that the rate "Can this amount increase after closing? NO" — giving you written confirmation that your rate is locked. At Beycome Title, we review every loan document with you to ensure you understand your mortgage terms before signing. Calculate your closing costs or get your free quote.