The Pros and Cons of Adjustable Rate Mortgages in 2026

Are Adjustable Rate Mortgages Right for You?

In a market where 30-year fixed rates hover in the low-to-mid 6% range, adjustable rate mortgages (ARMs) are getting renewed attention. ARMs can offer initial rates 0.5-1.0% lower than fixed-rate loans — but they come with trade-offs. Here's an honest breakdown.

How ARMs Work

An ARM has two periods:

1. Fixed period — Your rate stays the same for an initial period (typically 5, 7, or 10 years)

2. Adjustment period — After the fixed period, your rate adjusts annually based on a market index plus a margin

Common ARM Structures

5/1 ARM: Fixed for 5 years, then adjusts every year

7/1 ARM: Fixed for 7 years, then adjusts every year

10/1 ARM: Fixed for 10 years, then adjusts every year

5/6 ARM: Fixed for 5 years, then adjusts every 6 months

Rate Caps

ARMs have built-in protections called caps:

Initial adjustment cap: Maximum the rate can increase at first adjustment (typically 2%)

Periodic cap: Maximum annual increase after the first adjustment (typically 2%)

Lifetime cap: Maximum total increase over the life of the loan (typically 5-6%)

So if you start at 5.5%, your rate can never exceed 10.5-11.5%, regardless of market conditions.

The Pros of ARMs

1. Lower Initial Rate

The most obvious benefit. A 7/1 ARM might start at 5.5% when a 30-year fixed is at 6.25%. On a $350,000 loan, that's a savings of approximately $175/month or $14,700 over the first 7 years.

2. More Buying Power

A lower rate means a lower payment, which means you qualify for a larger loan. This can be the difference between affording the home you want and settling.

3. Ideal for Short-Term Ownership

If you know you'll sell within 5-7 years — whether due to career plans, family growth, or investment strategy — you can enjoy the lower rate without worrying about adjustments.

4. Potential to Refinance

If rates drop during your fixed period, you can refinance to a lower fixed rate. You get the benefit of the lower ARM rate in the meantime.

The Cons of ARMs

1. Rate Uncertainty

After the fixed period, your rate — and payment — can increase. If rates rise significantly, your payment could jump by hundreds of dollars per month.

2. Payment Shock

Even with caps, going from a 5.5% rate to a 7.5% rate on a $350,000 loan increases your payment by approximately $500/month. Can your budget absorb that?

3. Refinancing Isn't Guaranteed

Life changes, market conditions, or property value declines could prevent you from refinancing when your fixed period ends.

4. Complexity

ARMs are harder to understand than fixed-rate loans. The index, margin, caps, and adjustment schedule all matter — and many borrowers don't fully understand them.

When an ARM Makes Sense

You're relocating in 5-7 years for work or personal reasons

You're buying a starter home and plan to move up

You want maximum savings in the short term and have a plan for the adjustment period

You're financially sophisticated and comfortable managing rate risk

Market conditions suggest rates will remain stable or decline

When to Stick with Fixed

This is your forever home or you plan to stay 10+ years

You value payment certainty and sleep better knowing your rate won't change

Your budget is tight and you can't absorb potential payment increases

You're a first-time buyer and the complexity adds unnecessary stress

Fixed rates are already competitive — if the spread between ARM and fixed is less than 0.5%, the risk isn't worth the reward

ARM Strategy in 2026

Given where rates are today, here's a practical framework:

If fixed rates are 6.25% and a 7/1 ARM is 5.5%, the ARM saves you $14,700 over 7 years. If you'll sell or refinance by then, the ARM is worth considering.

If the spread is less than 0.5%, stick with fixed. The savings don't justify the risk.

If you can afford the fixed-rate payment, consider the ARM as a strategic choice, not a necessity. Never choose an ARM just because you can't afford the fixed-rate payment.

Let Us Help You Decide

The Taberne Group walks every client through a detailed ARM vs. fixed comparison tailored to their specific situation. We'll show you best-case, worst-case, and most-likely scenarios so you can make a confident decision. Call us at (215) 266-0663 or start your application at movement.com. We serve homebuyers across Pennsylvania and New Jersey.