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Mortgage overpayment calculator

 

Overpay your mortgage up to 20% fee-free

Use our overpayment calculator to find out how much interest you could save and how much sooner your could be mortgage-free.

Your home may be repossessed if you do not keep up repayments. Overpayments exceeding 20% of your outstanding balance may incur a fee.

Online mortgages are provided by NatWest which is authorised by the Prudential Regulation Authority and regulated by the Financial Conduct Authority and Prudential Regulation Authority. Royal Bank of Scotland may receive a fee based on a percentage of any mortgage entered into for this referral.

Flexibility at your fingertips

A mortgage with Royal Bank of Scotland gives you the flexibility to overpay by up to 20% of your outstanding balance each year fee-free.

You're in control, make changes to your overpayments whenever it fits your budget, potentially saving you thousands in interest over the course of your mortgage.

Mortgage overpayment calculator

Want to make an overpayment and understand how this could impact your mortgage payments and interest? Pop your details into our simple overpayment calculator and we’ll show you just that. Here are your overpayment options:

Select an option to see how you could save:

A one-off overpayment can lower your monthly repayments.
A one-off overpayment is a way to lower your monthly payments.
Please enter your mortgage balance

Time Remaining (Years, Months)

Please enter the current interest rate on your mortgage
An amount is required for monthly or one-off overpayment
An amount is required for monthly or one-off overpayment
An amount is required for one-off overpayment

Overpayment results

Current monthly repayment:

New monthly repayment:

Amount saved each month:

You could reduce your term by:

Amount of interest you could save:

Ready to get started?

With Royal Bank of Scotland, you can overpay your mortgage by up to 20% each year with no fees.

Start your mortgage journey with us

See what you might be able to borrow

NatWest and Royal Bank of Scotland are part of NatWest Group and offer the same mortgage products and rates when you speak with a mortgage professional. If you're confident to choose a mortgage product without advice, online mortgages are available to customers via the NatWest website. 

Want advice about your mortgage? You can make an appointment to speak with a Royal Bank of Scotland mortgages adviser.

Already got a mortgage with us?

Explore ways to save now
  • Want to know more? Check out the options available
  • Curious about your savings? Use our calculator to get a breakdown.
  • Log into Manage your Mortgage to make it happen.

Important information

If you're not on our Standard Variable Rate (which has no restrictions on the amount you can overpay), there may be a maximum amount you can overpay each year without incurring an Early Repayment Charge. For more information please refer to your most recent mortgage offer.

To calculate your potential savings, we've made the following assumptions:

  • The amount you currently pay is based on the information you've entered.
  • You’ll make the same monthly overpayments for the whole of your mortgage term.
  • The interest rate will remain the same for the term of the mortgage.
  • Months are of 12 equal lengths so the monthly interest won't change.
  • Repayment amounts are rounded up or down to the nearest £1 for display purposes.
  • The potential reduction in time to repay your mortgage is presented as years/months. The figure is rounded up or down accordingly for display purposes.

This calculator should be used as a guide only. It won’t give you a definite figure of how much interest or time you could save paying back your mortgage. It also doesn’t take into account any allowances or charges for early repayments and is based on a capital repayment mortgage only. It doesn’t include all the information you need to compare mortgages, so please ask for a mortgage illustration before choosing a mortgage.

Your home or property may be repossessed if you do not keep up repayments on your mortgage.

What are your options?

Frequently asked questions

Log in to Manage your Mortgage

Log in securely with our Mobile App and Digital Banking services.

Mobile App

Log in to or download the Royal Bank app, tap your mortgage when you're in the app and then click 'Manage your Mortgage'. 

Not registered for mobile? That’s fine, you can register using your mortgage account number. If you need any help, you can use our registration guide.

Digital Banking

Mobile App isn't for you? We've got you covered, you can access 'Manage your Mortgage' through Online Banking. You'll need to use your mortgage account number to register for the first time.

You can follow this link to register for Digital Banking. If you need any help then you can follow our step by step guide.

Need some help?

Call us

We're on hand to arrange a phone or video call with one of our qualified mortgage professionals. We can also help with any general queries about the process. 

Call us on 0800 096 9527

Relay UK: 18001 0800 096 9527

Opening hours: Mon-Fri 8am-6pm, Sat 9am-4pm, Sun Closed. Excluding public holidays.

Buy to Let? We have tools and guidance designed to help you complete your mortgage application online. If you own 4 or more buy to let properties or you need additional assistance due to your personal circumstances, please get in touch so we can try to support you.