Skip to main content
Property / Mortgage decision tool

Remortgage break-even calculator

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 months Waiting for a remortgage read.
Current monthly payment£0
New monthly payment£0
Monthly saving£0
Net switching cost£0
Saving over fixed period£0
Decision 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.

Cost stack

LineAmount
Property hub