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Refinance Calculator
See what a new rate would do to your payment, and whether it beats recasting.
When refinancing wins
Refinance when current rates are meaningfully below your existing rate, usually at least 0.75 to 1 percentage point lower, enough that the rate savings outpace the closing costs within a reasonable timeframe. When rates drop, refinancing gives you both a lower rate and a lower payment, which a recast cannot do.
If you locked in a 3 to 4% rate in 2020 to 2021 and current rates are above 6%, refinancing would raise your rate. That is the classic situation where recasting is the right move instead.
The cost difference is the whole game
| Recast | Refinance | |
|---|---|---|
| Cost | $150 to $500 | $3,000 to $10,000+ |
| Credit check | No | Yes |
| Appraisal | No | Usually yes |
| Rate change | No, keeps your rate | Yes, new rate |
| Timeline | 45 to 60 days | 30 to 60 days |
Recasting costs a rounding error compared to a refinance, but it cannot change your rate. That is the entire trade-off in one sentence.
The overlooked third option
Some homeowners recast now and refinance later: apply the lump sum and recast for immediate payment relief while rates are high, then refinance the smaller balance when rates drop. A smaller balance often means lower closing costs, since many refinance fees scale with loan size. The recast fee is essentially the price of cheaper monthly payments while you wait for rates to move.
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