Mortgage education
Fixed-Rate Mortgage vs Adjustable-Rate Mortgage (ARM)
The fixed vs ARM debate reset after 2022. With rates volatile, ARMs re-entered the conversation for the first time in a decade. Which one is right depends on one question: how long will you keep this loan?
Same interest rate for the full loan term (typically 15 or 30 years). Predictable principal and interest payment for the life of the loan.
Fixed introductory rate for 5, 7, or 10 years — then adjusts annually based on an index plus margin, capped by rate ceilings.
Side-by-side
| Factor | Fixed-Rate Mortgage | Adjustable-Rate Mortgage (ARM) |
|---|---|---|
| Starting rate | Higher | Typically 0.25%–1.00% lower |
| Payment stability | Never changes | Fixed then floats |
| Best for | Long-term homeowners | 5–10 year plans |
| Refinance flexibility | Always an option | Always an option |
| Rate caps | N/A | Initial, periodic, lifetime caps |
| Risk of higher payment | None from rate | Yes — after intro period |
You plan to stay 10+ years, you can't stomach payment uncertainty, or current fixed rates are historically low.
You know you're moving, refinancing, or selling within the intro period — and current ARM rates are meaningfully below fixed rates.
Fixed buys peace of mind. ARM buys a lower rate in exchange for future risk. Neither is inherently better — the answer depends on your timeline, not on rate predictions nobody can actually make.
Common questions
Yes, and many ARM borrowers do. But it depends on rates and your equity at the time — there's no guarantee refinancing will be attractive.
Your loan documents show lifetime rate caps — usually 5% above start rate. Plug that into a calculator and see if you could still afford the payment.
Still have questions?
Talk to RED. Our AI advisor can explain the differences, recommend the best starting point, and help you understand your options — without a credit pull or sales pressure.
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