Delivering huge savings to mortgagees looking to refinance

Refinance offers a convenient way for home owners to unlock equity. This calculator also shows how much they save by changing the lender.


The initial setup of Home Loans did not include any refinance products. To grow the customer base, REA wanted to tap into the Refi market as well.


The calculator is the first entry point for potential Refi candidates. With only three inputs, we can calculate potential savings when moving the mortgage to Home Loans. In addition to that, users can also play around with the calculations to see how a new home loan amount affect their potential repayments.

My role

  • Low and Mid-fi wireframes to define scope and requirements
  • Multiple remote and lab user tests to validate flows and usability
  • Interactive Axure prototype (incl. working calculations) to facilitate testing
  • Detailed visual and interaction design for responsive web
  • Facilitation of 30/60/90 reviews with company stakeholders
  • Development support throughout the delivery phase
Axure overview page with all possible flows.
Refinance calculator wireframes.
Visual designs for the refinance calculator.



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Bjorn Amherd

Bjorn Amherd

Product design lead. In the last 20+ years, I successfully delivered concepts for carsales, REA, Myer, HESTA, Bunnings, Optus, Fisher & Paykel and many more.