Fixed-Rate vs. Adjustable-Rate Mortgages

Marlowe Ramos
Jul 21
3 min read

Choosing the right mortgage is just as important as choosing the right home. Two of the most common mortgage options are fixed-rate mortgages and adjustable-rate mortgages (ARMs). Understanding how each works can help you select the loan that best fits your financial goals and long-term plans.

What Is a Fixed-Rate Mortgage?

A fixed-rate mortgage has an interest rate that remains the same for the entire life of the loan.

Whether you choose a 15-year, 20-year, or 30-year loan, your principal and interest payment stays consistent, making it easier to budget over time.

Benefits of a Fixed-Rate Mortgage

Predictable monthly mortgage payments
Protection from rising interest rates
Easier long-term budgeting
Ideal for buyers planning to stay in their home for many years

Because the interest rate never changes, you'll always know what to expect from your monthly payment (excluding changes to taxes or insurance).

What Is an Adjustable-Rate Mortgage (ARM)?

An adjustable-rate mortgage starts with a fixed interest rate for an initial period, after which the rate can change periodically based on market conditions and the terms of the loan.

Common ARM structures include:

5/6 ARM
7/6 ARM
10/6 ARM

The first number typically represents the number of years the initial fixed rate applies before adjustments begin.

Benefits of an Adjustable-Rate Mortgage

ARMs can offer several advantages for certain buyers.

These may include:

Lower initial interest rates
Lower initial monthly payments
Increased purchasing power during the introductory period
Potential savings if interest rates remain favorable

An ARM may be attractive for buyers who don't expect to keep the loan for many years.

Things to Consider With an ARM

While ARMs often begin with lower rates, the interest rate may increase after the initial fixed period.

Potential considerations include:

Monthly payments may rise over time.
Future interest rates are uncertain.
Budgeting can become more challenging after adjustments begin.

It's important to understand how often the rate can change and whether there are limits on those changes.

Fixed-Rate vs. Adjustable-Rate: Key Differences

Feature	Fixed-Rate Mortgage	Adjustable-Rate Mortgage (ARM)
Interest Rate	Remains the same	Changes after the introductory period
Monthly Payment	More predictable	May increase or decrease over time
Budgeting	Easier	Less predictable after adjustments
Initial Interest Rate	Typically higher	Often lower during the initial fixed period
Best For	Long-term homeowners	Buyers expecting to move, refinance, or sell within a few years

Which Mortgage Is Right for You?

A fixed-rate mortgage may be the better choice if you:

Plan to stay in your home for many years
Prefer stable monthly payments
Want protection from future interest rate increases
Value predictable long-term budgeting

An adjustable-rate mortgage may be worth considering if you:

Expect to move before the adjustment period begins
Plan to refinance within a few years
Want lower initial monthly payments
Are comfortable with the possibility of future payment changes

Questions to Ask Your Lender

Before choosing a mortgage, discuss the following with your lender:

What interest rates are available?
How long does the introductory rate last?
How often can the rate adjust?
Are there limits on how much the rate can increase?
What would my monthly payment be under different scenarios?
Which loan best aligns with my financial goals?

Understanding the details can help you avoid surprises later.

Make an Informed Financing Decision

The right mortgage depends on your financial situation, future plans, and comfort with changing interest rates. Comparing both fixed-rate and adjustable-rate options with a trusted lender can help you choose the loan that best supports your homeownership goals.

Whether you're buying your first home or upgrading to your next one, selecting the right mortgage can provide the financial stability and flexibility you need for years to come.