Overlay
Mortgages

Mortgage Agreement in Principle

Start your mortgage journey with an Agreement in Principle (AIP). Get closer to making an offer on a new property or remortgaging your home. Learn how much you could borrow with an AIP.

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

What is a mortgage Agreement in Principle?

A mortgage Agreement in Principle is a personalised indication of how much you could borrow towards the purchase or remortgage of a property. It's sometimes known as a 'Mortgage in Principle', a 'Decision in Principle' or a 'mortgage promise'.

You can use an Agreement in Principle with an estate agent, or someone selling a property, to show that you may be in a financial position to purchase it. It can be useful for securing house viewings and can help you understand how much you can offer, speeding up your home buying journey.

How to get an Agreement in Principle certificate

To get a certificate, you'll first need to get a positive mortgage Agreement in Principle decision. Once you have this, you can download your AIP certificate.

  • It has no impact on your credit score.
  • There's no commitment to get a NatWest mortgage and you don't need to be a NatWest customer already.
  • It's free and takes less than ten minutes to complete.

What happens after you have a mortgage Agreement in Principle?

Once you have an Agreement in Principle, you can save your details, so when you've made your decision, it’s easy to apply for a mortgage.

You can apply online by retrieving your saved application or completing a new one. Then, select the mortgage you want and begin your mortgage application.

Or, if you'd like support, we're on hand to arrange a phone or video appointment with one of our qualified mortgage professionals. 

Call us on ${dn-0800 096 9527} 

Relay UK: 18001 0800 096 9527

When should I get a mortgage Agreement in Principle?

  • It is useful to have an AIP when you are viewing properties with an intention to buy, or when you are looking to remortgage a property.
  • It provides an estate agent, or seller, with confidence that you may be in a financial position to purchase a property.
  • If your circumstances change, you should get an updated mortgage Agreement in Principle (often called just a 'Mortgage in Principle').

Does an AIP affect my credit score?

Getting an AIP doesn't impact your credit score, as we don't run a 'full' credit check. This is only something we would run if you went on to apply for a mortgage with us.

Is an AIP different to a mortgage calculator?

Yes. A mortgage calculator is a great way to get a quick idea of how much you may be able to borrow, but it's not as personalised. Your Agreement in Principle is also a formal document that you can use when you're considering making an offer for a property.

Can I get more than one AIP?

Yes, you can have multiple Agreements in Principle. Having an AIP with NatWest doesn't stop you getting another from a different lender. However, if you have one with us, you can request a fresh AIP whenever you need to.

Does an AIP mean I'll definitely be able to get a mortgage?

No, a mortgage Agreement in Principle isn't a final decision. It indicates that we may be able to lend you a certain amount towards the purchase or remortgage of a property.

However, as part of a full mortgage application, we complete a number of other more detailed checks, including a full credit check. We use this information, alongside other criteria, to help inform how much we could formally be able to offer.

Mortgage Agreement in Principle: FAQs

Looking to find out more about a new mortgage?

First home

It can be daunting when you are looking for a first time buyer mortgage, but we are here to help.

Remortgage

If you're coming to the end of your mortgage deal, you may want to move your mortgage to a new lender.

Moving home

Find out more about mortgages when moving home including possible costs, deposits and more.

Buy to let

Learn about your mortgage options if you're buying a property with the intention to rent it out.