Calculators

Explore our tools below to help you make informed decisions throughout your clients’ mortgage journey.

Our range of calculators are designed to provide assessments on affordability, see the effects of overpayments, and more.

All calculators are for illustrative purposes only.

Affordability calculator

For a thorough assessment of what your client(s) may be able to borrow, use our affordability calculator.

We recommend completing this before moving to a Decision in Principle (DIP).

Affordability calculator


The following calculators are hosted on nationwide.co.uk.

Overpayment calculator

Use the Overpayments calculator to see how making overpayments could help reduce your client’s mortgage term and interest they’ll pay.

Overpayment calculator

Quick quote calculator

Get an idea of what your client could borrow in minutes. It's not recommended for self-employed or non-standard transactions.

Quick quote calculator

ERC calculator

Use the Early Repayment Charge (ERC) calculator for a estimate of what your client might pay if they choose to pay off or switch their mortgage before the current deal ends.

ERC calculator