One of the biggest decisions you’ll make when choosing a mortgage is whether to go with a fixed interest rate or an adjustable one. Each has real trade-offs depending on your financial situation and how long you plan to stay in the home.
Fixed-Rate Mortgages
With a fixed-rate mortgage, your interest rate stays exactly the same for the entire loan term, whether that’s 15, 20, or 30 years. This means your principal-and-interest payment never changes, making budgeting predictable and protecting you from rising rates in the broader market.
Adjustable-Rate Mortgages (ARMs)
An ARM starts with a fixed rate for an initial period — commonly 5, 7, or 10 years — and then adjusts periodically based on a financial index, plus a margin set by the lender. After the fixed period ends, your rate (and payment) can go up or down depending on market conditions.
Key Differences at a Glance
- Predictability: Fixed-rate loans offer stable payments; ARMs offer variable payments after the initial period.
- Starting Rate: ARMs often start with a lower interest rate than fixed loans, which can mean lower payments early on.
- Risk: Fixed-rate loans carry less long-term risk; ARMs carry the risk of payment increases if rates rise.
Which One Might Make Sense for You?
A fixed-rate mortgage tends to suit buyers who plan to stay in their home long-term and want payment certainty. An ARM might appeal to buyers who expect to sell or refinance before the fixed period ends, or who want to take advantage of a lower initial rate.
The Bottom Line
Neither option is universally “better” — it depends on your timeline, risk tolerance, and financial goals. Comparing rate quotes for both types from your lender can help clarify which structure fits your plans.