In today’s housing market, extended loan terms, extending from a 25-year agreement to 35 or 40 years, have become a practical reality for homebuyers.
These extended terms, dubbed a “marathon mortgage,” help borrowers manage their initial monthly cash flow amid rising home prices and strict lender affordability checks.
Data from the Financial Conduct Authority (FCA) and the Bank of England suggest that 11% of new mortgage originations now carry a term that extends beyond the state pension age – almost four times pre-2022 levels. On the other hand, 40% of all new mortgages now carry a term that extends beyond the state pension age.
John Fraser Tucker, Head of Mortgage at… Mojo Mortgages“Although choosing a 35- or 40-year mortgage is an effective strategy for lowering your initial monthly payments, it also changes your mortgage payment schedule,” he said.
“For borrowers whose loans extend into their 60s or 70s, understanding how mortgage renewals work as retirement approaches is critical to ensuring a smooth transition between fixed terms.”
How do “marathon mortgages” work over the long term?
Fraser-Tucker explained that to understand the mechanics of a “marathon mortgage,” it helps to balance short-term flexibility with long-term structure.
In the short term, there is immediate menstrual relief. Spreading the principal balance over 35 or 40 years instead of 25 years could reduce monthly payments by about 15% to 25%, providing financial breathing room during high-cost years.
However, because the initial payments are spread over a longer period, principal reduction occurs at a slower pace in the early years. On a balance of £300,000 at an interest rate of 4%, a 40-year term adds significantly more interest to the total life of the loan than a 25-year term if repaid negatively.
However, it is not set in stone forever. Fraser-Tucker said a marathon mortgage was rarely fixed. “Most borrowers refinance or modify their terms several times over the life of the loan as their income, family needs, and career stages evolve,” he added.
What happens if your fixed rate deal expires near retirement?
One of the main concerns about “marathon mortgages” is that borrowers are more likely to repay the loan as they approach or reach retirement age.
The move from earned work income to fixed retirement income is changing how lenders review a mortgage application, Fraser-Tucker said.
“If your current fixed deal is coming to an end and your new term will last until or after your planned retirement date, lenders evaluate three main factors,” he explained.
Here are some factors to consider before retirement if you’re still paying your mortgage.
1. Your income will be evaluated differently
When a mortgage term extends beyond state retirement age, standard residential lenders shift from evaluating payroll or business accounts to evaluating verified post-retirement income.
Lenders will look at government pension projections, private pension drawdown tables, annuity statements, or investment returns to make sure your post-retirement income comfortably covers the monthly premiums.
2. Your loan term may be adjusted to match the lender’s age limits
Standard residential lenders maintain higher age limits, typically requiring loans to be liquidated by age 70, 75 or 80. If you are remortgaging in your 50s or 60s, your lender may adjust the maximum loan term allowed to match these age limits.
While the compressed term pays off the mortgage faster, it increases the monthly payments, which should fit within your projected retirement budget.
3. You should avoid standard variable rates (SVR)
Allowing a fixed deal to expire without taking action will move your balance to your lender’s Standard Variable Rate (SVR). SVR rates are typically higher than fixed or tracker rates, resulting in an unnecessary increase in monthly costs.
Securing a new deal before the current rate expires is key to maintaining predictability in housing costs.
How do you manage your mortgage renewal before retirement?
Carrying an extended mortgage life into retirement was easy when managed proactively, Fraser-Tucker said.
1. Overpay as much as possible
Most fixed-rate products allow up to 10% penalty-free overpayments each year.
Overpaying even modest amounts during your highest-income years directly reduces principal debt, which naturally pulls a 35- or 40-year period toward the traditional retirement horizon.
2. Think “Product Move”
The move to pension income can lead to a complete reassessment of affordability with a new lender pool. Therefore, moving an existing lender’s product is an effective route, Fraser-Tucker said.
Existing lenders often allow customers to switch to a new fixed rate without requiring a new income check or credit evaluation.
3. Explore specialized options in later life
If standard age limits prevent remortgaging on a standard residential mortgage, specialist options such as Retirement Interest Only (RIO) mortgages are designed specifically for retirees.
RIO loans allow you to service the interest only monthly, keeping expenses low and constant while the loan principal is settled when the property is eventually sold.
4. Seek advice from a broker
Speak with an FCA regulated mortgage broker up to six months before your current fixed rate expires. Pairing mortgage advice with an Independent Financial Advisor (IFA) ensures that any decision to use retirement lump sums or draw down on your mortgage is tax efficient and consistent with your long-term estate plans.
The verdict on taking out a “marathon mortgage”
Taking out a marathon mortgage is a practical solution to managing today’s property costs, Fraser-Tucker said.
He added: “Extending your term doesn’t mean you’re locked into a 40-year commitment – by reviewing your mortgage at each fixed-rate renewal, using overpayment allowances where possible, and seeking expert advice early, you can keep your monthly payments under control whether now or until retirement.”
