Byrz tools
A lower rate is not automatically a better deal.
Put your loan next to the rate you are looking at and see three honest numbers: what changes each month, how long the switch costs take to pay back, and what happens to the total interest bill, including the trap of resetting back to 30 years.
Your loan today, against the rate you are looking at
Both loans are compared as principal and interest with monthly repayments, and the rate you enter is taken as staying flat. Estimates only, not an offer of credit and not a recommendation to switch: fees, features and rate changes at your lender will move the real figures.
Rolling other debts in too? Use the debt consolidation calculator, see what an offset and extra repayments do, or head back to all the tools.