Interest-only mortgages are widely used by landlords because the monthly payment normally covers only the interest charged on the loan. This can help preserve cash flow for maintenance, voids, tax, insurance and further investment.
However, the capital borrowed does not reduce unless the landlord makes separate repayments.
If a landlord borrows £200,000 on an interest-only basis for 20 years, the full £200,000 will normally remain outstanding at the end of the term. Paying the interest every month keeps the mortgage up to date, but it does not repay the original loan.
Every landlord using interest-only finance therefore needs a credible repayment strategy.
Why the end of the mortgage term matters
The end date can appear distant when the mortgage is arranged. Over time, refinancing every few years can create the impression that the loan will simply continue indefinitely.
It will not.
When the contractual term ends, the lender expects the outstanding capital to be repaid. A landlord who waits until the final months may discover that the available options have narrowed because of age, affordability, rental coverage, property value or changes in lender criteria.
A repayment strategy should be reviewed throughout the mortgage term—not created when the lender’s final repayment notice arrives.
Selling the property
Selling the mortgaged property is a common repayment strategy. The sale proceeds repay the lender, with any remaining equity returning to the landlord.
The strategy depends on the likely net proceeds rather than the headline property value. The landlord should consider:
- The outstanding mortgage balance
- Estate-agent and legal fees
- Any early repayment charge
- Work required before marketing
- The likely selling period
- Tax liabilities
- Whether the property will be sold with or without tenants
- The effect of a weaker property market
A sale can also take longer than expected. If the intended repayment date is close to the mortgage end date, there may be insufficient time to prepare, market and complete the transaction.
Landlords should obtain professional tax and legal advice before selling because the consequences depend on their circumstances and ownership structure.
Refinancing onto another mortgage
Many landlords expect to refinance the balance onto a new buy-to-let mortgage.
This may be possible, but refinancing is not a guaranteed repayment strategy. The landlord and property must meet the lender’s criteria at the time of the new application.
The lender may consider:
- The applicant’s age and proposed new mortgage term
- The property’s current value
- The required loan-to-value
- The confirmed market rent
- The rental stress calculation
- The landlord’s credit history
- Other mortgages and financial commitments
- The performance of the complete portfolio
- Property type, condition, lease and licensing
- Whether the borrower is an individual or limited company
A property that qualified for a mortgage 15 years ago may not automatically satisfy current criteria. A short lease, unusual construction, lower-than-expected rent or reduced valuation could prevent the intended refinance.
The earlier the options are reviewed, the more time there is to reduce the balance or address a property problem.
Using savings or investments
A landlord may intend to repay the mortgage using savings, investments, pensions or other assets.
This strategy should be measurable. It is not enough to assume that investments will eventually produce the required amount.
Review:
- The present value of the repayment fund
- The mortgage balance it must cover
- The remaining mortgage term
- Regular contributions
- Expected growth after fees and taxation
- The effect of weaker investment performance
- Whether the funds can be accessed when required
Investment values can rise and fall. A strategy relying on one future value should be checked regularly, with appropriate financial and tax advice obtained where necessary.
Rental income held in an ordinary current account can also be gradually consumed by maintenance, tax and personal withdrawals. Money intended to repay the mortgage should be clearly identified and monitored.
Making overpayments
Regular or occasional overpayments can reduce the capital gradually while preserving some of the cash-flow advantages of an interest-only mortgage.
For example, a landlord might use a proportion of monthly rental profit, annual surplus cash or the proceeds of another property sale to reduce the balance.
Before making an overpayment, check:
- The lender’s annual overpayment allowance
- Whether an early repayment charge applies
- The minimum permitted payment
- How the lender applies the money
- Whether reducing the mortgage is preferable to retaining an emergency reserve
A landlord should not use all available cash to reduce debt if doing so leaves insufficient reserves for repairs, voids or other business costs.
Moving to part repayment or full repayment
Another option may be to convert some or all of the mortgage to a capital-and-interest repayment basis.
Monthly payments will normally increase because the borrower is paying both interest and capital. However, the balance should reduce over the remaining term if all required payments are maintained.
A part-repayment arrangement can provide a middle course. Part of the loan remains interest-only while the rest is repaid monthly.
Any change will depend on lender approval and affordability. A short remaining term can produce a significant increase in monthly payments, which is another reason to review the position early.
Using other portfolio assets
A portfolio landlord may plan to sell another property, release equity elsewhere or use accumulated business funds to repay the mortgage.
This can work, but it connects the repayment of one loan to the performance and finance available across the portfolio.
Property values, rents, tax liabilities, mortgage balances and sale costs should be reviewed together. Releasing equity from another property also creates new secured borrowing rather than eliminating the debt completely.
The complete portfolio should therefore be considered rather than treating each mortgage in isolation.
Build a repayment timetable
Landlords should record the end date, balance and intended repayment method for every interest-only mortgage.
At least three to five years before maturity, review whether the strategy remains realistic. Obtain updated property and rental figures, examine the portfolio and consider whether gradual capital reduction is required.
Around 12 to 18 months before the end date, the landlord should begin making firm decisions about refinancing, selling or repaying from other resources. This allows time for valuation, legal work, property preparation and alternative planning.
If the strategy already appears insufficient, contact the lender and seek mortgage advice promptly. Earlier action usually provides more options than waiting until the mortgage has matured.
Review your interest-only strategy with NetRent
An interest-only mortgage can support landlord cash flow, but the capital debt remains and must eventually be repaid.
NetRent Mortgage Solutions works with DNA Financial Solutions to help landlords review existing borrowing, refinancing possibilities, rental calculations and portfolio plans before the mortgage term ends.
To discuss an interest-only buy-to-let mortgage or repayment strategy, contact NetRent:
Telephone: 01352 721300
Email: mortgages@netrent.co.uk
NetRent does not provide legal advice. This article represents our general understanding of the landlord mortgage and rental property market and is provided for information only.
Mortgage products, rates, fees and lender criteria can change. Property values and investments can rise or fall. Appropriate mortgage, financial, legal and tax advice should be obtained before making changes to a repayment strategy.