Interest-Only Mortgage

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What is an Interest-Only Mortgage?

An interest-only mortgage is a type of home loan where the borrower is only required to pay the interest on the loan for a specified period, typically the first 5 to 10 years. After this interest-only period, the loan usually converts to a traditional amortizing loan where the borrower makes payments on both the principal and interest.

How Does it Work?

Interest-Only Period

During the interest-only period, your monthly payments will be significantly lower than they would be with a traditional mortgage because you are only paying the interest accrued on the loan balance. This means more disposable income in the short-term.

Post Interest-Only Period

After the interest-only period expires, the loan typically converts to a standard amortizing loan where you have to pay both the principal and interest. This transition can result in “payment shock” because the monthly payments can jump significantly higher.


  1. Lower Initial Payments: Allows for more financial flexibility during the interest-only period.
  2. Investment Opportunity: The saved money can be invested elsewhere for potentially higher returns.
  3. Cash Flow Management: Ideal for those with irregular income patterns like freelancers or commission-based workers.


  1. No Equity Buildup: You do not build home equity during the interest-only period, which can be risky if home values decrease.
  2. Payment Shock: A sudden increase in payments can be financially stressful when the interest-only period ends.
  3. Total Loan Cost: In the long term, you might end up paying more in interest compared to traditional loans.

Who Should Consider an Interest-Only Mortgage?

  1. Investors: Those who plan to sell the property before the interest-only period ends.
  2. High-Income Earners: People expecting a significant income increase in the future.
  3. Financial Strategists: Those who are capable of wisely investing the saved money for higher returns.

Risks and How to Mitigate Them


  • Falling Home Prices: If the property value decreases, you could end up owing more than the home is worth.
  • Rate Fluctuations: Many interest-only mortgages have variable rates, which can increase your payments.


  • Refinancing: Consider refinancing before the end of the interest-only period to mitigate payment shock.
  • Financial Planning: Use the interest-only period to save or invest wisely, preparing for higher future payments.
Interest-only mortgages can offer flexibility and lower payments initially but come with their own set of risks and challenges. Understanding these aspects is key to determining if this type of mortgage is right for you.


An interest-only mortgage is a type of home loan where the borrower pays only the interest on the loan for a set period of time, after which they begin to pay both principal and interest.

During the interest-only period, the borrower’s monthly payments are lower because they are only covering the interest. Once the interest-only period ends, the payments increase as the borrower begins to pay back the principal as well.

  • Pros: Lower initial monthly payments, potential tax benefits on the interest payments, flexibility in budgeting.
  • Cons: Higher total interest paid over the life of the loan, potential for payment shock when the interest-only period ends, risk of home depreciation.

Yes, borrowers can usually choose to make additional payments towards the principal during the interest-only period, which can help reduce future payments and the total interest paid over the life of the loan.

It can be, as you may end up paying more in interest over the life of the loan compared to a traditional mortgage. It depends on the terms of the loan and how payments are managed.

If your home’s value decreases, you could owe more on your mortgage than your home is worth. This is a risk with any mortgage, but it can be of particular concern with an interest-only mortgage if you haven’t been paying down the principal.

This type of mortgage might be suitable for borrowers with irregular income, such as freelancers or commission-based workers, who expect to earn more in the future and can afford higher payments later on.

Qualification criteria can vary by lender, but generally, you’ll need a good to excellent credit score, a low debt-to-income ratio, and a substantial down payment.

Yes, borrowers can typically refinance an interest-only mortgage, which could be a wise option if interest rates have decreased or if the borrower’s financial situation has improved.

At the end of the interest-only period, you will begin to pay both principal and interest, which will result in higher monthly payments. Alternatively, you may be able to refinance the loan or sell the property.

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