Key Financial Takeaways (Executive Summary)
- A mortgage recast re-amortizes your remaining loan balance over the remaining term after you make a significant lump-sum principal payment.
- Your interest rate and maturity date remain 100% identical; only your mandatory monthly payment drops.
- Recasting costs between $150 and $500 in administrative fees, compared to $4,000 to $8,000 in closing costs for a traditional refinance.
- Conventional conforming and jumbo loans permit recasting; FHA, VA, and USDA loans strictly prohibit recasting under government rules.
How a Mortgage Recast Works
When you make an extra principal payment on a standard mortgage, you shorten your loan term, but your required monthly payment next month remains exactly the same. The bank simply expects the normal payment until the loan hits $0 early.
In a Mortgage Recast (Re-amortization), you contact your loan servicer, make a qualifying lump-sum payment (typically $5,000 to $10,000 minimum), and pay a small administrative fee ($150 - $350). The servicer recalculates your monthly payment based on the new, smaller balance over your remaining years, lowering your required monthly payment permanently.
🧮 Mortgage Recast vs. Refinance Comparison Tool
Model the impact of a lump-sum principal reduction and compare recasting your existing note versus replacing it with a new loan.
Analyze Recast vs RefinanceRecast vs Refinance: Real Comparison on a $400,000 Loan at 6.00%
Suppose you have 25 years remaining on a $400,000 mortgage at 6.00% (monthly P&I: $2,577.21). You inherit $50,000 in cash:
| Strategy | Upfront Fee | New Balance | New Monthly P&I | Monthly Savings |
|---|---|---|---|---|
| Status Quo (No Action) | $0 | $400,000 | $2,577.21 / mo | $0 (Baseline) |
| Pay $50k Principal (No Recast) | $0 | $350,000 | $2,577.21 / mo | $0 / mo (Pays off 5.5 yrs early) |
| Pay $50k Principal WITH Recast | $250 | $350,000 | $2,255.06 / mo | $322.15 / month SAVED |