Providing proofs


You should submit copies or scans of the original documents. Photos are acceptable, but you must submit them as a PDF, TIF or a JPEG. We don't accept mobile phone banking screenshots. If the submitted documents show a 16 digit PAN, please redact this information.

Please don’t submit proofs we haven’t asked for, as this may delay the progress of your case.

When applying for a mortgage with us, we may ask to see some proofs to help us confirm your clients' information such as:

  • Your clients' name and address
  • How much they earn
  • Proof of their deposit

You can provide these proofs on NFI Online once you’ve submitted your client’s application, and they've been requested. To speed up your application, make sure to get these proofs ready beforehand. This way you can attach the requirements straightaway. 


Did you know there are a range of free scanning apps, such as Adobe Scan* that can also help save you time and improve the accuracy and quality of your case packaging.

Most scanning apps are free and easy to use, helping reduce the time it takes for your clients to get their mortgage offer. To download, please visit the appropriate App store for your device.

* Nationwide Building Society is not responsible for the content or accuracy of external websites.

Here are some details about the documents we'll need and what we're looking for. We may ask for other documents depending on your client's circumstances.

Sending your proofs to us:

  • Please don't submit anything we haven't asked for.
  • You can attach your required documents to NFI Online
  • We accept documents in PDF, TIF or JPEG format. Please ensure when uploading, that these aren't password protected.
  • For paper applications, please send any requested documents to
  • If you send us anything containing personal data outside of NFI Online, this should be encrypted. Contact us on Broker Chat if you need to do this.

Packaging support

Helping you to receive a quicker offer with our packaging guides.

View our packaging guides

Contact us

Talk to our experienced Dedicated Broker Support advisers using Broker Chat.

Use Broker Chat

Case tracking

Read our top tips to remember once you’ve submitted your application.

Read our case tracking top tips