| Switching cost | Include |
|---|---|
| New lender fees | Processing, legal, valuation, documentation where applicable |
| Old lender exit costs | Contractual charges, document retrieval, other applicable costs |
| Forex cost | Any currency conversion needed during transfer/disbursement |
| Operational cost | Temporary double payments or cash gaps |
Then estimate realistic monthly interest saving under the same remaining term. Break-even months = total switching cost ÷ monthly saving. If you expect to prepay or refinance again before break-even, the transfer is weak.