Recast may fit when
You have cash for a principal payment, like your current rate, and mainly want a lower monthly payment.
A recast can lower monthly payment without changing your rate. A refinance can change rate and term, but it may add closing costs and require a new loan approval.
You have cash for a principal payment, like your current rate, and mainly want a lower monthly payment.
You can get a meaningfully better rate, want to change loan term, or need to remove/add borrowers.
What fees apply, what minimum principal payment is required, and how soon the new payment starts.