Recast vs Refinance vs Prepay (USA)
Compare these three strategies over your chosen holding horizon.
📖 Recast, refinance, or prepay — same cash, three outcomes
When a windfall or cash reserve arrives, mortgage holders have three ways to deploy it. Each uses the same dollars but produces different outcomes for balance, payment, and total interest.
Prepay
Principal shrinks, payment unchanged, term shortens. No fees, no paperwork, just a faster payoff.
Recast
Principal shrinks, loan is re-amortized over remaining term, monthly payment drops. Small fee ($250-$500).
Refinance
Whole new loan — new rate, new term, closing costs. Strongest when rate drop is meaningful and you stay past break-even.
🎯 Which strategy fits your situation?
Prepay is usually cheapest if you have a fixed rate and plan to stay in the loan. Every dollar goes to principal — no fees, no commitment, full flexibility.
Recast is the cash-flow play. Choose it when you need a lower monthly payment (job change, retirement, rental conversion) and your current rate is already competitive so refinancing would not gain much.
Refinance wins when rates have dropped at least 0.75% and you plan to stay past break-even. Roll the closing costs into the loan only if you are confident about the horizon — rolled costs add interest over the term.
⚖️ Cost winner vs payment winner — they often disagree
Cost winner (usually prepay)
Every dollar to principal, no fees, no rate reset. Cheapest over long horizons unless a refinance rate drop is large.
Payment winner (usually recast)
Drops monthly payment without changing the rate. Refinance can sometimes beat it if closing costs are low.
When they agree: refinance
When rate drop is big enough to beat prepay on cost AND recast on payment, refinance is the clear winner on both metrics.
Pick a metric first
Decide whether you are optimizing for total cost or monthly payment before looking at results. Matching strategy to goal beats optimizing the wrong metric.
❓ Frequently asked questions
Can every loan be recast?
No. Most conventional conforming loans allow recasts. FHA, VA, and USDA typically do not. Jumbo loans vary — check with your servicer before assuming.
How much of a rate drop justifies refinancing?
The common rule is 0.75% or more, combined with a holding period that beats break-even. Smaller drops may still work if closing costs are low.
Should I roll refinance costs into the loan?
Rolling costs keeps cash in your pocket but adds interest over the loan term. If you can afford to pay upfront and plan to stay long, paying out of pocket is usually cheaper.