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Mortgages

Mortgage calculators

Use our mortgage calculators to see what your monthly repayments might look like, and how factors like rates, fees and overpayments could affect your UK mortgage.

NatWest mortgages are available to over 18s. Your home or property may be repossessed if you do not keep up repayments on your mortgage.

Agreement in Principle

Get a personalised indication of how much you could borrow without impacting your credit score. Takes less than 10 minutes, based on your income, outgoings and deposit.

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What could you afford?

Find out what we may be able to lend you and what your monthly repayments could be. Takes less than five minutes.

How remortgaging might change your payments

Is your current mortgage deal coming to an end soon? See how your repayments could change when your current interest rate ends.

Mortgage rates and repayments

Compare our mortgage rates and products. Get an indication of product fees and what your monthly repayments could be.

Already a homeowner?

If you already have a mortgage with us or want to learn more about your borrowing, we have calculators to help.

Explore overpayments and savings

See how you could save money by making regular monthly overpayments or paying a lump sum (subject to the terms of your mortgage).

See how rates could affect you

Explore how changes in interest rates could affect your monthly repayments, especially if you’re on a variable rate or coming to the end of a fixed deal.

Estimate your home's value

Already own your home? Calculate the amount of equity you have in your property in as little as a minute.

Mortgage calculator frequently asked questions

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 ${dn-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 only provide Buy to Let mortgages online for small portfolio landlords.

  • Please use our tools and guidance designed to help you complete your mortgage application online.
  • We do not provide advice on Buy to Let mortgages but if you need technical help with your online application, get in touch so we can provide support.
  • If you are not a small portfolio landlord, or you wish to apply with a mortgage professional, NatWest Buy to Let mortgages are available via mortgage brokers.