ADJUSTABLE-RATE MORTGAGE

Not for everyone. But sometimes the smartest play on the board.

If you know your timeline, an ARM gives you a lower rate during the window that matters. I show you the worst case so you decide with your eyes open.

By Case Laviolette, MLO · NMLS #2025459 Last updated May 11, 2026

Overview

An adjustable rate mortgage gives you a fixed rate for an initial period, then adjusts periodically for the remaining term. The initial rate is lower than a comparable fixed rate. If you're selling, refinancing, or paying off the loan before the fixed period ends, that lower rate translates directly into savings.

ARMs have a bad reputation from 2008. Modern ARMs are a completely different product. Strict caps on every adjustment. Qualification at the higher of the note rate or fully indexed rate. No negative amortization. No interest-only gimmicks. Consumer protections that didn't exist during the crisis.

I build two scenarios for every ARM conversation. The ARM path and the fixed path. Monthly savings during the fixed period. Worst case after adjustment. The break-even point where fixed would have been cheaper. You see everything, then you decide.

Key Details

WHO IT'S FOR

Borrowers with shorter holding periods. Relocations. Known refinance timelines. Anyone who wants a lower initial rate and understands the trade.

FIXED PERIOD

Five, seven, or ten years of fixed rate. No adjustments during this window.

ADJUSTMENT CAPS

Every ARM has caps on the first adjustment, each subsequent adjustment, and the lifetime total. These caps are your protection.

INDEX

Tied to SOFR. Adjustments are based on the current index value plus a fixed margin.

RATES CAN GO DOWN

After the fixed period, your rate adjusts based on the market. If the index drops, your rate can decrease. It goes both directions.

How I Handle This

I model both paths. ARM and fixed. Monthly savings, worst-case adjustment, total interest comparison at various holding periods. You see the full picture.

If the ARM makes sense for your timeline, great. If it doesn't, we go fixed. No pressure either way. This is a math decision, not a marketing pitch.

Questions I Get

How is this different from the ARMs that caused the crisis?

Modern ARMs have strict caps, responsible qualification standards, and no negative amortization. Fundamentally different product.

What happens at the first adjustment?

Your rate moves based on the index plus your margin, subject to caps. It can go up or down. I show you the worst case before you commit.

What if I end up staying longer?

You can refinance into a fixed rate before adjustments begin. Many borrowers use ARMs exactly this way.

Which period should I pick?

Match it to your expected timeline. Shorter periods offer bigger rate discounts. Longer periods offer more cushion. I help you find the right balance.

Curious whether an ARM fits your plan?

Send me your scenario and expected timeline. I'll run fixed vs ARM side by side.

Send Me Your Scenario → Call Me