| Switching cost | Include |
|---|---|
| New processing/admin fees | All applicable charges/taxes |
| Legal/valuation/document costs | Actual quotes |
| Old lender closure-related costs | Only those actually applicable |
| Operational cost | Document movement, temporary cash gap |
Estimate monthly interest saving under a realistic rate path. Break-even months = total switching cost ÷ monthly saving. If you expect to sell, prepay or refinance again before break-even, the transfer is weak.