Mortgage Basics: Fixed vs. Adjustable Rate

Buying a home is exciting, but the paperwork? Terrifying. Among the alphabet soup of acronyms, the choice between a Fixed-Rate Mortgage (FRM) and an Adjustable-Rate Mortgage (ARM) is the most critical decision you will make.

Fixed-Rate Mortgage (FRM): Certainty

With a fixed-rate mortgage, your interest rate never changes, regardless of what happens in the economy to interest rates. A 30-year fixed loan means your monthly principal and interest payment in Year 1 is exactly the same as in Year 29.

Reference: Popular with 90% of buyers, especially when rates are historically low.

• Pros: Stability, easier budgeting, protection against rising inflation/rates.
• Cons: Generally higher starting rate than ARMs; harder to qualify for if credit is shaky.

Adjustable-Rate Mortgage (ARM): Risk vs. Reward

An ARM has an interest rate that changes periodically based on a market index. They usually offer a lower "teaser rate" for an initial period (e.g., 5 or 7 years), after which the rate adjusts annually.

• Pros: Lower initial payments which drastically increases buying power; good if you plan to move/sell before the adjustment period hits.
• Cons: Uncertainty. If rates skyrocket, your monthly payment could double, potentially leading to foreclosure if unaffordable.

Which One Should You Choose?

Ask yourself three questions:

1. How long will I stay? If you are buying your "forever home," a fixed rate is safer. If you are moving in 5 years, a 7/1 ARM could save you thousands.
2. What is the rate environment? If rates are at historic lows, lock them in with a fixed rate. If they are high and falling, an ARM might let you ride the wave down (though refinancing is also an option).
3. Can I handle the worst-case scenario? Calculate the maximum possible payment on the ARM. Can you afford it?

Run the Numbers

Don't guess. Use our Mortgage Calculator to simulate both scenarios. Input different interest rates to see how much interset you would pay over the life of the loan versus the initial savings of an ARM.

Conclusion

There is no "better" loan, only the loan that fits your risk tolerance and timeline. Understand the terms, read the fine print, and choose the path that lets you sleep soundly in your new home.