An adjustable-rate mortgage can be worth comparing when the initial savings are meaningful and your budget can handle what happens later. The decision deserves more than a starting-rate comparison. Before choosing an ARM for a Colorado home purchase, ask: Would this mortgage still work if I stayed longer than planned?
That question is timely. In its October 14, 2026 report, the Mortgage Bankers Association said ARMs represented 10.5% of total mortgage applications for the week ending October 9, their highest share since October 2025. That is a national application measure, including purchases and refinances, rather than a count of completed Colorado home purchases.
Freddie Mac’s October 15 survey put the national average 30-year fixed mortgage rate at 7.40%. That survey average is market context, not a Milestone rate quote or an offer available to every borrower.
For buyers balancing a home search with a monthly budget, an ARM may deserve a place in the discussion. Here is how I would evaluate it alongside a fixed-rate mortgage.
The three-scenario test
A hybrid ARM begins with a fixed interest rate for a defined period. Afterward, the rate can change on the schedule in the loan agreement. A 7/6 ARM commonly has seven initial fixed years, followed by adjustments every six months. Confirm the actual terms rather than relying on the product label.
A fixed-rate mortgage keeps the same interest rate and, on a standard fully amortizing loan, the same scheduled principal-and-interest payment. With either structure, property taxes, insurance, mortgage insurance when applicable, and HOA charges can affect the overall housing expense. A fixed mortgage rate does not freeze every cost of homeownership. The CFPB’s fixed-versus-adjustable explanation is a useful starting point.
An ARM’s initial rate may be lower than a comparable fixed rate, but the difference depends on the product, borrower, property, and market. Compare actual offers prepared at the same time, with the same loan amount, down payment, loan term, and lock period.
Imagine a Colorado buyer comparing a seven-year ARM with a 30-year fixed mortgage. The buyer expects to relocate in about five years. Both options in this example amortize over 30 years; the ARM’s seven-year period describes its initial fixed rate, not a seven-year payoff deadline. This is a planning example, not a loan offer.
If the home sells and the loan is paid off before the first adjustment, the buyer does not experience that ARM’s later rate changes. The question becomes whether the savings during the actual ownership period justify choosing it.
Compare upfront loan costs, interest paid, and the remaining balance at the expected sale date. Review monthly cash flow separately: principal payments reduce debt, so a comparison of total payments alone does not tell the whole cost story. Also check for any prepayment penalty in the specific agreement.
My question for the buyer: How firm is the relocation plan, and what would cause you to stay?
A job opportunity changes. The family likes the neighborhood. Moving costs are higher than expected. The original exit date slips, and the loan reaches its adjustment period.
The fixed mortgage continues on its agreed principal-and-interest schedule. The ARM follows its index, margin, adjustment timing, caps, and any floor. A reset can produce a higher or lower rate, subject to those terms. Our guide to how ARM mortgage rates work explains the mechanics.
Ask the lender to show the initial payment, the maximum permitted payment at the first adjustment under the loan’s terms, and the payment associated with the lifetime maximum rate. Review when each could occur. The CFPB recommends comparing rate caps and understanding the highest possible payment.
My question for the buyer: If you were still in this house after the first adjustment, would the budget leave room for ordinary life, repairs, and savings?
A future refinance requires a new transaction. The available rate, closing costs, property value, income, credit, and loan requirements all matter. Even if refinancing is possible, the replacement loan may not improve the situation enough to justify its cost.
Do the initial comparison without assuming that refinancing will rescue the payment. Then consider a future refinance as an option to evaluate if circumstances support it. The CFPB cautions against assuming you can sell or refinance before an ARM changes.
My question for the buyer: Could you keep this mortgage if a refinance were unavailable or unattractive?
| Compare | What to request |
|---|---|
| Money due upfront | Points, lender fees, lender credits, and total cash to close. |
| Starting monthly expense | Principal and interest plus realistic taxes, insurance, mortgage insurance, and HOA dues. |
| Cost over your timeline | Interest and loan costs through the likely payoff date, with the remaining balance shown separately. |
| Future ARM obligation | First adjustment date, adjustment frequency, index, margin, caps, floor, and maximum-payment scenarios. |
| A change in plans | A budget that can support keeping the loan beyond the expected move or refinance. |
APR helps describe borrowing cost, but an ARM’s APR does not show its maximum possible rate. The CFPB advises care when comparing fixed and adjustable APRs. Read the Loan Estimates and ARM disclosures together.
An ARM may be worth comparing when it offers a meaningful initial benefit, the fixed period aligns with a realistic timeline, and you have the financial capacity to handle an extended stay. Those considerations belong together.
A fixed-rate mortgage may be a better fit when predictable principal and interest are a high priority, your ownership timeline is uncertain, or a higher future payment would strain the household. Choosing stability can be a sound decision even when another loan starts lower.
Also separate approval from comfort. Ask which payment the lender must use to qualify you for the specific ARM. Meeting that underwriting requirement does not replace your own budget review.
No. A temporary buydown subsidizes payments for a limited period. A fixed-rate loan can have a temporary buydown while its note rate stays fixed. An ARM permits the note rate itself to adjust under the agreement. Our mortgage buydown guide explains that separate choice.
No. They limit rate changes according to the loan contract. You still need the lender to translate those limits into dollar payments and compare the result with your household budget.
Bring your price range or property address, available down payment, comfortable monthly budget, expected time in the home, and any loan offers you already have. Use the lender’s secure process for financial documents. The CFPB’s ARM fine-print checklist can help organize your questions.
At Milestone Home Mortgage, I help Colorado buyers compare eligible options from multiple wholesale lenders. We can review the starting payment, cash needed, and future adjustment exposure together so you can make a decision that fits your plans and your backup plan.
Compare Fixed-Rate and ARM Options
Call or text 303-800-4595.
Michael Shotnik | Broker & Owner | NMLS 218281
Milestone Home Mortgage LLC | NMLS 2588937 | Equal Housing Opportunity
Educational information as of October 19, 2026; not a rate quote, loan approval, or commitment to lend. ARM rates and payments may increase after the initial fixed period. Availability, qualification, costs, and adjustment terms vary. Future refinancing and savings are not guaranteed.
Milestone Home Mortgage LLC NMLS #2588937. Michael Shotnik NMLS: 218281, CO License: 100017466. Not licensed in Alaska or New York. To check license status of mortgage loan originator, visit D.O.R.A. and NMLS consumer access.
