This tool is built for the real remortgage question: after fees, ERCs, cashback and the new rate, how long does the switch take to pay for itself, and is that inside the fixed period you are actually considering?
Assumptions: compares two repayment mortgages on the same balance and remaining term. It is a planning tool for rate-versus-fee decisions, not a lender affordability engine or advice on fixed versus tracker risk.
Your inputs
Break-even read
0 monthsWaiting for a remortgage read.
Current monthly payment£0New monthly payment£0Monthly saving£0Net switching cost£0Saving over fixed period£0Decision readCheck the inputs
What this means
Compare the break-even point with the deal length, not just the monthly saving. A cheaper rate is not automatically a better decision if the switch costs eat most of the benefit.
Professional read
Key assumption
The repayment term and balance stay the same under both options so the comparison is rate-and-fee focused.
Common mistake
Comparing only the monthly payment and ignoring arrangement fees, cashback, legal costs and ERCs.
Best next action
Once break-even looks acceptable, compare the lender features that matter next: overpayment allowance, portability and future ERC structure.
When it breaks down
Tracker deals, fee-added-to-loan cases, or major planned overpayments need a more customised comparison than this first-pass tool.