Mortgage Refinance Calculator

Calculate refinance savings, break-even point, and lifetime interest savings. Compare your current mortgage with a new rate to decide if refinancing makes financial sense.

🏠 Finance📐 Monthly Savings - Closing Costs = Break-Even Timeline

Current loan balance ($)

Current rate (%)

New rate (%)

New term (years)

Remaining term on current loan (years)

Estimated closing costs ($)

Please enter valid values.

Formula & Reference

Variable	Formula	Units
Mortgage Refinance Calculator	Monthly Savings - Closing Costs = Break-Even Timeline	months

Step-by-Step Examples

Example 1

Rate Drop 0.75%

$280K balance, 7.0% -> 6.25%, 30-yr new, $6K closing.

Current: $1,863/mo | New: $1,739/mo
Monthly savings: $124 | Break-even: 48.4 months (4 years)
If staying 5+ years: worthwhile

✓ $124/month savings, 4-year break-even

Example 2

Small Rate Drop

$250K, 6.75% -> 6.50%, $5K closing.

Monthly savings: ~$45
Break-even: 111 months (9.3 years) - too long!
1% or more rate drop generally makes refinancing worthwhile

✓ $45/month, 9-year break-even - marginal

Example 3

1.5% Drop

$320K, 7.5% -> 6.0%, $7K closing.

Monthly savings: ~$320
Break-even: 21.9 months (1.8 years) - excellent!

✓ $320/month savings, 1.8-year break-even

Real-World Applications

🏠

Homeowners

Determine if refinancing your mortgage will save money.

🏦

Mortgage Lenders

Show borrowers their refinance savings and break-even.

💰

Financial Planners

Advise clients on optimal refinance timing.

📊

Mortgage Brokers

Quickly compare refinance scenarios for clients.

Common Mistakes to Avoid

⚠️

Refinancing too frequently

Each refinance resets the loan clock and costs 2-3%. Refinancing multiple times reduces lifetime savings. Each refinance should be evaluated independently.

⚠️

Only looking at the monthly payment

A lower rate with a longer term can increase lifetime interest paid even with a lower monthly payment. Compare total interest paid (rate x remaining term), not just monthly payment.

⚠️

Not accounting for closing costs

No-closing-cost refinances roll fees into a higher rate. Calculate whether paying closing costs upfront or rolling them in produces a lower break-even over your planned stay.

Frequently Asked Questions

When does refinancing make sense? ▾

Generally when: the rate drop is at least 0.75-1% or more, you plan to stay long enough to break even (typically 2-5 years), and your credit has improved enough to qualify for better terms.

What is a good break-even for refinancing? ▾

Break-even under 24 months is excellent. 24-48 months is good if you plan to stay. Over 60 months makes refinancing questionable. If you might sell in 3 years, a 4-year break-even is a bad deal.

What credit score do I need to refinance? ▾

Conventional: 620 minimum, 740+ for best rates. FHA streamline: no minimum (no credit check in some cases). VA: typically 620. The better your credit, the better your rate.

Can I refinance with no closing costs? ▾

Yes - no-closing-cost refinances either roll costs into the loan balance or use a slightly higher interest rate. Calculate whether this makes sense by comparing the higher rate cost vs. upfront closing cost savings.

How long does refinancing take? ▾

The refinance process typically takes 30-45 days from application to closing. Gather documents early: pay stubs, W-2s, bank statements, and current mortgage statement.