Mortgage switching calculator
Compare your current loan against a new rate, net of every switching cost. See your monthly saving, the exact break-even point, and what happens if you keep repayments the same.
Typical switching costs run $600 to $1,000: a discharge fee, government registration fees, and sometimes an application fee (often waived).
The drop in your required repayment over the same remaining term. The interest saving is larger, because a lower rate also shifts more of each repayment onto the principal.
Your cumulative saving after switching
The line starts below zero by your net switching cost, crosses zero at the break-even dot, and everything after that is pure saving.
Estimate only. Assumes both loans are principal-and-interest over the same remaining term at constant rates. Break costs on fixed loans are not included, and can be significant: check before switching a fixed loan. Results are not a quote, loan offer or pre-approval.
The loyalty tax, quantified
Banks reserve their sharpest rates for new customers and quietly leave existing ones on higher pricing. On most loans written more than two years ago, the gap is 0.3% or more, and the switching costs are recovered within months. That is what the break-even dot on the chart shows: everything to its right is money you keep.
Sometimes you do not even need to switch: presented with a genuine refinance comparison, many lenders suddenly find a better rate for you. Nathan runs that negotiation first, and manages the full refinance if they will not move. Either way it costs you nothing.
Hear from our happy homeowners.
Calculators guess. Nathan checks.
A free 30-minute call gets you the numbers lenders will actually approve, across 50+ of them.