Interest-only mortgage

Compare rates on interest-only mortgages with Mojo Mortgages[1]

What’s an interest-only mortgage?

With an interest-only mortgage, you only have to pay back the interest on the amount of money you’ve borrowed.

Your monthly payments will be lower than a repayment mortgage, but you’ll usually need a higher deposit.

At the end of your mortgage term, you’ll still owe the full amount of your loan which you’ll need to repay.

interest only mortgages

What’s the difference between an interest-only and repayment mortgage?

Capital repayment mortgage

With a repayment mortgage, each month your payments will be used to pay back some of the interest on your loan and some of the loan amount itself, known as the capital.

Paying back both the interest and the capital will make your payments higher than if you had an interest-only mortgage.

But by the end of your mortgage term, you’ll have paid off the whole amount that you owe.

Interest-only mortgage

With an interest-only mortgage, you’ll only be paying the interest on the loan. This means your monthly payments will be much lower than if you had a repayment mortgage.

At the end of your mortgage term you’ll still owe the full loan amount, so to take out this type of mortgage you’ll need to have a repayment plan in place to repay the capital.

You’ll need to give your lender proof that you have an acceptable plan to repay the loan, for example:

  • Endowment policies
  • Savings or ISAs
  • Pensions
  • Investments

Advantages and disadvantages

The main advantage of interest-only mortgages is that your monthly payments will be less, but there are other pros and cons to consider:


  • Cheaper payments can help you to save money and invest
  • The savings you make can be spent on home renovations which can help to increase your property’s value
  • You could buy a more expensive home than you’d otherwise be able to afford
  • You have the flexibility to make overpayments and to switch to a repayment mortgage when you’re able to afford higher monthly outgoings


  • You’ll usually pay more in total than you would with a repayment mortgage
  • Lenders often require you to have a larger deposit, usually 25% or more, and be a higher-earner
  • You’ll be left with all of the capital to pay off at the end of the mortgage term
  • It can be complicated looking after both the mortgage and repayment method
  • You could end up with a shortfall if you don’t have enough to pay the balance at the end of your mortgage, this could put you at risk of losing your assets

Mortgage repayment calculator

Our mortgage calculator can help you to work out what your interest-only mortgage could cost you each month and how much you might be able to borrow.

Mortgage calculator >

What happens at the end of an interest-only mortgage?

When your mortgage comes to an end, your lender will ask you to repay the loan amount in full. This is why you’ll need to have a solid repayment plan in place.

There are several options you can use to repay your interest-only mortgage which include:

Using savings and investments

If you’ve built up enough money through your investments and savings, you can use this to pay off your mortgage. But relying on investments is a risk as there’s always a chance they may not perform as well as you’re expecting them to.

Switching to a repayment mortgage

Your lender might let you switch to a repayment mortgage, but be aware that this will increase your monthly payments. You could try to reduce your payments by having a longer mortgage term or choosing a part repayment/part interest-only mortgage.

Using a tax-free lump sum from your pension

Some lenders will accept a personal pension plan as a repayment methodvehicle. If you choose to receive a lump-sum payment on retirement, you can use this to pay back your outstanding mortgage but, as with other investments, you may receive less than you expected.


It’s a good idea to compare providers and options before your mortgage ends. You could find another lender, or ask your existing lender for a new deal with a better rate. But you’ll still need to meet the criteria and your age may mean you have fewer mortgage options.

Selling your property

If your property’s value is the same as when you bought it, you could sell it and use the money to pay back your loan. If your home has increased in value you could use the equity to buy a new property.

Retirement interest-only mortgages

Designed to help older borrowers, this type of mortgage works in a very similar way to a regular interest-only mortgage, but without having a fixed end date.

Instead, the lender receives full payment of the loan when the property is sold, when the homeowner moves into long-term care or when they pass away.

To take out one of these mortgages you’ll have to prove that you can afford the monthly interest payments - for example, through the income your receive from your pension.

Some retirement interest-only mortgages will also let you pay back some of the capital, reducing the amount that you owe and helping you to leave more to your loved ones.

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[1]For online mortgage comparison and advice introduces customers to Mojo Mortgages which is authorised and regulated by the Financial Conduct Authority. Mojo Mortgages is a trading name of Life’s Great Limited.’s relationship with Life’s Great Limited is limited to that of a business partnership, no common ownership or control exists between us. Please note, we cannot be held responsible for the content of external websites and by using the links stated to access these separate websites you will be subject to the terms of use applying to those sites.