Refinance Calculator
See how much a lower rate saves you each month.
Monthly savings
$227
Total savings
$67,963
Old monthly payment
$1,688
New monthly payment
$1,461
Interest Comparison
Interest Over Time
Interest Over Time
| Year | Old Interest | New Interest | Savings |
|---|---|---|---|
| 1 | $16,128 | $12,383 | $3,746 |
| 3 | $15,557 | $11,842 | $3,715 |
| 5 | $14,907 | $11,244 | $3,662 |
| 7 | $14,166 | $10,584 | $3,582 |
| 9 | $13,323 | $9,854 | $3,469 |
| 11 | $12,363 | $9,048 | $3,315 |
| 13 | $11,271 | $8,157 | $3,114 |
| 15 | $10,027 | $7,172 | $2,854 |
| 17 | $8,611 | $6,085 | $2,526 |
| 19 | $6,999 | $4,883 | $2,116 |
| 21 | $5,163 | $3,555 | $1,609 |
| 23 | $3,074 | $2,087 | $987 |
| 25 | $696 | $466 | $230 |
Practical Example
Formula: monthly savings = old payment − new payment, where each payment uses M = P[r(1+r)^n] / [(1+r)^n − 1]. Total savings = monthly × remaining months.
Frequently Asked Questions
Should I refinance my mortgage?
Refinancing is often worth it when the new rate is at least 0.5-1% lower and you'll stay long enough to recoup closing costs.
How do I calculate refinance savings?
Compare the new monthly payment to the current one and multiply the difference by remaining months, then subtract closing costs.
Are there fees to refinance?
Yes — closing costs typically run 2-5% of the loan; this calculator focuses on monthly savings, not all upfront fees.
What factors can affect my results?
Multiple factors influence financial calculations including interest rates, time periods, tax implications, fees, and inflation. Always consider these variables when planning and use conservative estimates for critical decisions.
How often should I recalculate?
Review your calculations whenever your financial situation changes significantly, or at least annually. Major life events like job changes, marriage, or market shifts warrant immediate recalculation.
Disclaimer: This calculator provides estimates for informational purposes only. Actual results may vary. Consult a qualified professional for personalized advice.