Interest Only options for existing customers
If you already have a Nationwide mortgage, you may have options to borrow more, take your existing mortgage with you when you move or change your repayment type.
This includes Interest Only and Repayment borrowing, or porting your mortgage if you’re moving home.
What's on this page
Product features
- Available across our entire mortgage product range.
- For Interest Only mortgages, the maximum we’ll lend is 75% Loan to Value (LTV).
- For Part & Part mortgages, the maximum we’ll lend is 85% LTV (75% can be Interest Only).
- Maximum mortgage term 40 years, or retirement if sooner (maximum age 70).
- Maximum loan amount of £5 million.
Borrowing more
Repayment mortgage customers
If you have a Repayment mortgage and want additional Interest Only borrowing, you’ll need to meet the full Interest Only eligibility criteria.
The interest rate of any additional borrowing may differ from that of your existing mortgage rate.
What can you use the additional borrowing for?
- Making home improvements, buying a car, or covering large one-off expenses.
- It can’t be used for debt consolidation.
Interest Only mortgage customers
Repayment additional borrowing
If you have an Interest Only mortgage and borrow extra on a Repayment basis, your mortgage will be split between the two types. This is called a Part & Part mortgage.
The interest rate of any additional borrowing may differ from that of your existing mortgage rate.
What can you use the additional borrowing for?
- Making home improvements, buying a car, or covering large one-off expenses.
- It can be used for debt consolidation.
Interest Only additional borrowing
If you’re looking to increase your Interest Only borrowing, you’ll have to meet the full Interest Only eligibility criteria.
You will also need to provide evidence of a mortgage repayment plan for both existing and new Interest Only lending.
The interest rate of any additional borrowing may differ from that of your existing mortgage rate.
What can you use the additional borrowing for?
- Making home improvements, buying a car, or covering large one-off expenses.
- It can’t be used for debt consolidation.
Porting your mortgage when you move home
Porting means taking your current Nationwide mortgage product with you to a new home. You pay off your existing mortgage and take out a new one on a new property.
It’s important to know that it is not a transfer of the mortgage loan. It’s a transfer of the mortgage product or deal. This means you will have to reapply for a new mortgage loan and meet our current lending criteria.
Porting with additional borrowing
When you port an Interest Only mortgage with additional borrowing, any extra borrowing is assessed on the following basis:
- Interest Only borrowing - Interest Only criteria apply
- Repayment borrowing - Part & Part criteria apply
Check the eligibility criteria below to find out if you qualify.
Please note the interest rate of any additional borrowing may differ from that of your existing mortgage rate.
Porting with no additional borrowing
If you want to port the same amount that’s left on your existing mortgage, the term stays the same and doesn’t require any other changes or new borrowing.
If this applies to you, contact us to discuss your eligibility: 0345 609 25 30
Monday to Friday, 8am to 6pm.
Saturday 8:30am to 4pm.
Closed Sundays and bank holidays.
Find out more about porting your mortgage.
Change from a Repayment to an Interest Only mortgage
If you'd like to change your Repayment mortgage to Interest Only, you'll need to complete a Decision in Principle (DIP).
You can do this by phone with one of our friendly mortgage representatives, who will check you meet our eligibility criteria. Once your DIP is complete, the mortgage representative will book you an appointment with a mortgage adviser who will request the change.
Get a Decision in Principle 0345 609 25 30
Monday to Friday, 8am to 6pm.
Saturday 8:30am to 4pm.
Closed Sundays and bank holidays.
Change from an Interest Only to a Repayment mortgage
If you’d like to change to from an Interest Only to a Repayment mortgage, explore our Change your mortgage repayment type page to find out more.
Find out what you could afford
Plan your monthly payments using our repayment and borrowing calculators.
Repayment calculator
Find out how much your monthly mortgage repayments might be, or how a rate change could affect your monthly payments.
Borrowing calculator
Our calculator gives you an idea of what you could borrow based on your income, property price and deposit.
Important mortgage information:
How to apply
To apply for an Interest Only or Part & Part mortgage with us you’ll need to complete a Decision in Principle (DIP) by phone. This will give you an idea of how much we may be able to lend you.
Apply by phone
Call us to speak with one of our mortgage representatives.
Monday to Friday, 8am to 6pm.
Saturday 8:30am to 4pm.
Closed Sundays and bank holidays.
Continue your application
If you’ve already started a mortgage application with us, continue it when you’re ready.