Fixed vs. Adjustable Rate Mortgages

The Fundamental Difference

Fixed-rate mortgages keep the same interest rate for the entire loan term-your payment never changes.

Adjustable-rate mortgages (ARMs) start with a fixed rate for an initial period, then adjust periodically based on market conditions.

Fixed-Rate Mortgages

How They Work

You lock in an interest rate at closing, and it stays the same for 15, 20, or 30 years. Your monthly principal and interest payment never changes (though taxes and insurance may fluctuate).

Pros

• Predictability: Budget with confidence knowing your payment won't change
• Protection: You're shielded from rising interest rates
• Simplicity: Easy to understand-no complex terms
• Peace of mind: No surprises, ever

Cons

• Higher initial rate: Fixed rates are typically higher than ARM starting rates
• Less flexibility: To get a lower rate, you'd need to refinance
• Missed opportunity: If rates drop significantly, you're locked in

Best For

• Buyers planning to stay in the home long-term (7+ years)
• Those who prioritize payment stability and predictability
• Risk-averse borrowers
• Buyers in low-rate environments

Adjustable-Rate Mortgages (ARMs)

How They Work

ARMs are described with two numbers, like 5/1 or 7/6:

• First number: Years of fixed rate (5 or 7 years)
• Second number: How often rate adjusts after that (1 = annually, 6 = every 6 months)

A 5/1 ARM has a fixed rate for 5 years, then adjusts annually. A 7/6 ARM is fixed for 7 years, then adjusts every 6 months.

Rate Caps

ARMs include caps that limit how much your rate can change:

• Initial cap: Maximum first adjustment (often 2%)
• Periodic cap: Maximum each subsequent adjustment (often 2%)
• Lifetime cap: Maximum total increase (often 5-6% above start rate)

Pros

• Lower initial rate: Often 0.5-1% lower than fixed rates
• Lower initial payments: More affordable in early years
• Rate could decrease: If market rates fall, your rate might too
• Good for short-term: Save money if you'll move or refinance before adjustment

Cons

• Payment uncertainty: Payments can increase significantly
• Complexity: More terms and conditions to understand
• Rate risk: If rates rise sharply, so will your payments
• Refinancing pressure: May need to refinance to avoid higher payments

Best For

• Buyers planning to sell or refinance within 5-7 years
• Those expecting income increases
• Buyers in high-rate environments expecting rates to fall
• Financially sophisticated borrowers comfortable with some risk

Real-World Comparison

Let's compare on a $400,000 loan:

*Example rates for illustration. The ARM saves ~$11,760 over 5 years if you sell/refinance before adjustment.

Questions to Ask Yourself

• How long do I plan to stay in this home?
• Could I afford payments if my ARM adjusts up by 2%? 5%?
• Am I comfortable with some uncertainty in exchange for initial savings?
• Is this a starter home or my forever home?
• What direction do I think interest rates are heading?

Our Recommendation

For most buyers, especially first-time buyers, a fixed-rate mortgage provides the stability and peace of mind that makes homeownership comfortable. However, if you're confident you'll move within 5-7 years, an ARM could save you money.

Let's discuss your specific situation-there's no one-size-fits-all answer.