When you're shopping for a mortgage, one of the most important decisions you'll make is choosing between a fixed-rate mortgage and an adjustable-rate mortgage (ARM). Both have real advantages, and the right choice depends on your financial situation, how long you plan to stay in your home, and your comfort with risk.
Fixed-Rate Mortgages
With a fixed-rate mortgage, your interest rate stays the same for the entire life of the loan, whether that's 15 years or 30. Your principal and interest payment never changes, which makes budgeting simple and predictable.
Fixed-rate mortgages are a popular choice because they offer stability and peace of mind. Even if interest rates rise nationally, your rate remains locked in. This can be especially valuable if you plan to stay in your home for many years.
The tradeoff is that fixed-rate loans often start with a slightly higher interest rate than adjustable-rate options. In other words, you will likely pay more for the predictability that fixed-rate loans offer.
A fixed-rate mortgage may be a good fit if you:
- Plan to stay in your home for the long term
- Want consistent, predictable monthly payments
- Prefer stability over the chance to save on a lower starting rate
- Are buying when rates are low
Adjustable-Rate Mortgages (ARMs)
An adjustable-rate mortgage starts with a fixed interest rate for a set initial period, often 5, 7, or 10 years, and then adjusts periodically based on market conditions. For example, a "5/1 ARM" has a fixed rate for the first five years and then adjusts annually after that.
Because ARM loans often start with a lower interest rate than fixed-rate loans, they can result in lower initial monthly payments. If you plan to sell or refinance before the adjustment period begins, you may benefit from the lower starting rate without ever experiencing a rate change.
The key consideration with ARMs is that your rate, and therefore your payment, can increase over time. Some ARMs have rate caps that limit how much the rate can rise at each adjustment or over the life of the loan, but it's important to understand how much your payment could potentially change.
An adjustable-rate mortgage may be a good fit if you:
- Plan to sell or refinance before the initial fixed period ends
- Expect your income to grow over time
- Want to take advantage of a lower starting rate
- Are comfortable with some uncertainty in your future payment
Questions To Ask Your Lender
Before choosing between a fixed-rate and adjustable-rate mortgage, it's worth talking through these questions with a trusted mortgage professional:
- What is the difference in my monthly payment between a 15-year and 30-year fixed-rate loan?
- What interest rate would I qualify for with an ARM, and how does that compare to the fixed-rate option?
- If I choose an ARM, what is the maximum my rate could increase, and what would my payment look like at that rate?
- Based on my plans and finances, which type of loan makes more sense for me?
There is no single right answer. The best loan is the one that fits your financial goals, your timeline, and your comfort level.
Have questions or need assistance?
If you have questions about this topic or need assistance with your mortgage needs, please speak to one of our mortgage loan officers at your local Bar Harbor Bank & Trust branch. We're here to help you make confident, informed decisions every step of the way.

