The primary downfalls of an interest-only mortgage are the lack of equity buildup, the risk of "payment shock" when the interest-only period ends, and potential negative equity if property values fall. While offering lower initial payments, these loans often result in higher total interest costs, making them risky without a clear exit strategy.
The biggest drawback of an interest only mortgage is that you don't pay off the loan as you go. This means you have to find another way to do this – you can't just forget about it. Another downside of an interest-only mortgage is that the total amount you repay over time will be much higher than a repayment mortgage.
Lenders have shied away from interest only mortgages because history indicated that people were perhaps less than willing to give up that extra money to invest, or perhaps they were bad at managing investments and didn't generate the required returns. Interest only mortgages increase the risk for the lender.
What are the benefits of interest-only mortgages? Some people like the flexibility to be able to make lower payments initially, and pay more when their income or savings increase near the end of their mortgage term.
One major risk is that your monthly payments could increase significantly at the end of the interest-only period when you are required to start paying both principal and interest. Additionally, if your property's value decreases, you could find yourself underwater on your loan — owing more than the property is worth.
You could change to a mortgage where you repay the capital as well as the interest. This is called a repayment mortgage. Your monthly payments are more but you can start paying back the capital you owe. If you cannot afford to switch your whole mortgage, you could keep some of it interest only to afford the payments.
An interest-only mortgage offers a lower monthly payment at first and is best suited for people with ample assets, good credit and short-term ownership.
If you do not feel downsizing is practical for health or other reasons, Martin Lewis thinks a lifetime mortgage is an option to consider, if you seek expert advice on all your options, including any other alternatives, such as entitlement to means tested benefits and taking a lodger to provide extra income, for example ...
The interest paid on a mortgage, along with any points paid at closing, are tax-deductible if you itemize on your tax return. Use this calculator to see how this deduction can create a significant tax savings.
An interest-only mortgage payment on $200,000 depends on the interest rate, but at 5%, it's around $833/month (just interest), significantly lower than principal & interest payments, though you never build equity and pay more total interest over time, with later payments including principal. For example, at 3.25%, the initial payment is about $542/month for the interest-only period.
Repayment plans
The 3-7-3 Rule in mortgages isn't a loan type but a federal timeline from the TILA-RESPA Integrated Disclosure (TRID) rule, ensuring borrower protection by mandating disclosures within 3 business days of application, a 7-business-day wait between the initial Loan Estimate and closing, and another 3-day wait if significant changes (like APR) occur, giving borrowers time to review costs before committing to a loan.
The average age to pay off a mortgage in the U.S. is around 62, with many becoming mortgage-free in their early 60s, coinciding with or just after typical retirement age, though figures vary by source. While some financial experts suggest paying it off by 45 for aggressive investing, data shows a significant portion of homeowners, especially older ones (60+), are mortgage-free, but increasingly, older adults (60s, 70s, 80s) carry more mortgage debt than previous generations, according to Marketplace.
If you're wondering how to pay off your mortgage in 10 years, here are practical, proven strategies to help you get there.
The 70/20/10 rule for money is a simple budgeting guideline that splits your after-tax income into three categories: 70% for Needs (essentials like rent, groceries, bills), 20% for Savings & Investments (emergency funds, retirement), and 10% for Debt Repayment & Donations (extra debt payments or giving). It balances immediate living costs with long-term financial security, helping you cover necessities while building wealth and paying off liabilities.
👎 Drawbacks of Interest-Only Mortgages
With interest-only, you're only paying to borrow, not own. So, unless the market adds value to your home, you won't be building any equity. If prices drop, you could even end up owing more than your home's worth – a bit like paying rent but with a big bill waiting at the end!
When your interest-only mortgage ends, your lender will expect you to pay off the loan in full with a single lump sum. Hopefully this won't be a surprise. Your lender should have been in touch with you a year before, six months before and finally just before the end of your mortgage.