Interest-Only Loans

Given the high cost of housing, many home buyers are exploring alternative financing options to make homeownership more accessible. One option is the interest-only loan — a loan structure that offers reduced payments at the beginning of the loan term and deferred principal repayments. While it may come with certain risks, an interest-only mortgage can also be an ideal solution for the right borrower.

This guide explains how interest-only mortgages work, their pros and cons, who they’re best suited for, and how they compare to traditional loans.

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What Is an Interest-Only Mortgage?

An interest-only loan lets borrowers pay only the interest on the loan for a set term, usually 5 to 10 years. Following this period, the loan transitions into a standard loan schedule, where payments increase to cover both interest and principal for the remainder of the term.

During the interest-only phase:

  • Monthly payments are substantially lower.
  • No equity is built.
  • The loan balance remains unchanged (unless extra payments are made).

Once the interest-only term ends, borrowers must start repaying the principal, which can lead to a sharp increase in monthly payments. The exact amount of the increase will depend on interest rate changes and the remaining loan term.

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Interest-Only Loans: Snapshot

Interest-Only Term

5 – 10 years

Loan Term

Up to 30 years

Down Payment

20%+

Credit Score

620+

Maximum Debt-to-Income Ratio

43% – 50%

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Who Are Interest-Only Loans Best For?

Interest-only loans may offer a strategic financial solution for certain types of borrowers:

  • High-Income Earners with Fluctuating Income: Professionals who earn a substantial income that fluctuates regularly & are capable of making lump-sum principal payments.
  • Investors with Specific Exit Strategies: Real estate investors who intend to sell their properties during the interest-only period.
  • Individuals with Expected Future Income Increases: Those who are confident that their income will spike within the interest-only period & can easily cover higher payments down the road.
  • Borrowers with Substantial Liquid Assets: Those who can easily repay a large portion of the principal, or the entire loan, when the interest-only period ends.
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What Happens After the Interest-Only Period?

Once the interest-only phase ends, you have a few options:

  1. Start repaying the principal: As noted earlier, your loan will now include principal and interest. As such, expect your monthly payments to increase significantly.
  2. Refinance: You can refinance your mortgage, which can offer revised terms and the opportunity for lower principal and interest payments.
  3. Sell the property: You can sell the home and use the proceeds to pay off the loan.

Be sure to plan your strategy well before the interest-only period ends to avoid financial strain when the payment structure changes.

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Pros and Cons of Interest-Only Loans

Weigh the benefits and drawbacks of interest-only loans before applying.

Pros:

  • Lower Initial Payments: During the first few years, you only pay interest, freeing up money for other expenses.
  • Flexibility for Irregular Income: Lower initial payments can be ideal if you’re a self-employed borrower with fluctuating income.
  • Short-Term Ownership Strategy: These loans might make financial sense if you plan to sell the home before the interest-only period ends.
  • Tax Benefits: If you’re using this loan for investment purposes, you may be able to deduct the interest payments, reducing taxable income.

Cons:

  • No Equity Growth: Since you’re not paying down the loan at first, you won’t build equity (unless the property appreciates).
  • Payment Spike: Once the interest-only term ends, monthly payments can jump, which can strain your budget.
  • Higher Long-Term Costs: You may pay more interest over the loan term compared to traditional mortgages.
  • Limited Availability: Not all lenders offer interest-only loans.
  • Risk of Negative Equity: If the home drops in value during the interest-only period, you could owe more than what your home is worth.

Interest-Only Loans vs. Traditional Mortgages

There are key differences between interest-only loans compared to traditional mortgages:

Feature

Interest-Only Loans

Traditional Mortgages

Initial Monthly Payments

Lower

Higher

Equity Growth

No equity growth during interest-only term (unless property appreciates)

Equity growth with each payment

Risk Level

Higher

Lower

Best For

Investors, short-term buyers, high earners with regular bonuses

Long-term homeowners

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FAQs

How do payments work during the interest-only term?

You make lower monthly payments that only cover the interest, with no reduction in the loan balance.

What happens after the interest-only period ends?

Payments will now include principal and interest, causing them to increase significantly.

Do I need a large down payment?

Yes, you can expect to make a down payment of at least 20%, depending on the lender.

Can I build equity with an interest-only mortgage?

You can only start to build equity in your home once the interest-only period ends and your payments start including principal payments. That said, you may gain equity if your home increases in value.

How long do interest-only periods typically last?

Generally, interest-only phases are from 5 to 10 years.

Can I refinance after the interest-only period?

Yes, many borrowers refinance to a traditional mortgage or to avoid payment spikes.

Are interest-only mortgages good for first-time buyers?

These loans may be attractive for first-time home buyers who are looking to keep costs low at first, but they require very careful budgeting for future costs.

Can I make extra payments toward the principal?

Some lenders may allow this, which can help lower future payments and build equity sooner.

Are interest-only mortgages available for investment properties?

Yes, in fact interest-only loans are popular among investors looking to maximize cash flow and deduct interest expenses.

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Final Thoughts

An interest-only mortgage can be a strategic tool for home buyers looking for short-term flexibility or have a clear financial plan. With lower initial payments, these loans can free up cash, but they also come with higher long-term costs. Speak with an experienced mortgage company to explore these interest-only options to determine if they’re suitable for you.

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If you’re looking to buy a home as a self-employed individual in the Pacific Northwest region, we can help. At Sammamish Mortgage, we offer various mortgage programs for those without traditional employment documentation in WA, OR, ID, CO, and CA. Visit our website to get an instant rate quote or call us today to have your mortgage questions answered!

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