When Does Refinancing Make Sense?

The whole decision comes down to one number: the breakeven point. Here's a worked $300,000 example — refinancing from 7.5% to 6.5% with $4,000 in closing costs — that shows exactly how to find it.

Monthly Savings

$201.44

7.5% → 6.5%

Breakeven

20 mo

≈ 1.7 years

Net Savings · 5 yr

$8,086

after closing costs

The Breakeven Math, Step by Step

$300,000 balance · 30-year term · $4,000 closing costs

1 Old payment at 7.5%: $2,097.64/mo. New payment at 6.5%: $1,896.20/mo.
2 Monthly savings = $2,097.64 − $1,896.20 = $201.44/mo.
3 Breakeven = closing costs ÷ monthly savings = $4,000 ÷ $201.44 = 20 months (about 1.7 years).
4 Stay in the loan past month 20 and every payment after is pure savings — about $8,086 net over five years.

Rule of thumb: Refinancing makes sense when you'll stay in the home well beyond the breakeven point — here, 20 months. If you might move or refinance again before then, the $4,000 in closing costs isn't worth it.

Calculate Your Own Breakeven

Enter your balance, current and new rate, and closing costs to see your personal breakeven point.

Refinance Calculator

Current Loan

Remaining Balance

Current Interest Rate

Remaining Term

years

New Loan

New Interest Rate

New Loan Term

Closing Costs

Typically 2–5% of loan balance

Current Payment

$2,069.18/mo

New Payment

$1,769.79/mo

Monthly Savings

+$299.38

Breakeven

17 mo

Current Total Interest

$340,753

New Total Interest

$357,125

Net Lifetime Savings

Cost $21,372

You'll recover closing costs in 17 months. Refinancing makes sense if you plan to stay in the home beyond that.

Refinancing Usually Makes Sense When…

✓ You'll stay in the home past the breakeven point.
✓ Rates have dropped meaningfully since you closed.
✓ Your credit has improved, unlocking a better rate.
✓ You want to drop PMI or switch from an ARM to a fixed rate.

Think Twice When…

✗ You may sell or move before breakeven.
✗ Resetting to a new 30-year term raises lifetime interest.
✗ Closing costs are unusually high relative to the savings.
✗ You're already far into a low-rate loan.

Frequently Asked Questions

When is it worth it to refinance a mortgage?

Refinancing makes sense when you'll keep the loan past the breakeven point — the moment your monthly savings have repaid the closing costs. In our example, dropping from 7.5% to 6.5% on a $300,000 loan saves $201.44/month, so the $4,000 in closing costs is recovered in about 20 months (1.7 years). Stay in the home longer than that and you come out ahead.

What is the breakeven point in refinancing?

The breakeven point is closing costs divided by monthly savings. It tells you how many months you need to stay in the loan before the refinance pays for itself. If you plan to sell or refinance again before that point, the upfront costs outweigh the savings.

Is a 1% rate drop enough to refinance?

Often, yes — the old '2% rule' is outdated. A 1% drop on a $300,000 balance saves $201.44/month here, which clears typical closing costs in 1.7 years. What matters isn't the size of the rate cut but whether your monthly savings beat the closing costs within your expected time in the home.