An interest only mortgage lets you pay just the interest for a set period, with no principal reduction during that time. The lower early payment is the draw, but the structure carries real trade-offs that are worth understanding before you consider one.
How the interest-only period works
For an introductory period — commonly several years — your payment covers only the interest on the loan. Because you are not paying down principal, the balance does not shrink during that window. When the interest-only period ends, payments rise, sometimes sharply, as you begin repaying principal over the remaining term.
Who considers an interest-only structure
This structure is sometimes used by borrowers with irregular income, those expecting income to rise, or buyers who plan to sell before the interest-only period ends. It is not a way to afford a home you otherwise could not — it defers principal, it does not remove it.
The trade-offs to weigh
- You build no equity through payments during the interest-only period.
- Payments jump once principal repayment begins.
- If home values fall, you could owe more than the home is worth.
Because of these risks, compare an interest-only option carefully against a standard amortizing loan. You can browse finance companies advertising different mortgage structures to compare.
Frequently asked questions
Do you ever pay off an interest-only mortgage?
Yes — after the interest-only period, you repay principal over the remaining term, which raises the payment. Some borrowers refinance or sell instead.
Do interest-only payments build equity?
Not through the loan itself during the interest-only period, since you are not reducing principal. Equity would only grow if the home's value rises.
Are interest-only mortgages risky?
They carry more risk than standard loans because of the payment jump and lack of principal reduction. They suit specific situations, not every buyer.
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