Mortgage Refinance Calculator
Determine if refinancing makes financial sense for you. Calculate your break-even point, monthly savings, and lifetime interest savings with our comprehensive refinance analysis.
Loan Details
Current Mortgage
25 years, 0 months
New Mortgage
Typically 2-5% of loan amount ($$6,000 - $$15,000)
Extra cash you want to take out from home equity
Analysis Results
Refinancing Recommended
You'll break even in 1.3 years and save $322/month.
Monthly Payment
Current
$2,026
New
$1,703
Save: $322/month
Interest Rate
Current
6.50%
New
5.50%
Decrease: 1.00%
Break-Even Point
16 months
(1.3 years)
Upfront Cost
$5,000
Due at closing
First Year Savings
-$1,133
After closing costs
Lifetime Interest Savings
-$10,526
If you stay for full 30-year term
Loan Details
⚠️ Important Considerations
When Refinancing Makes Sense
- ✓ Rate reduction of 0.75% or more
- ✓ Planning to stay 5+ years (or past break-even)
- ✓ Can afford closing costs
- ✓ Credit score has improved significantly
- ✓ Need to access home equity for improvements
Warning Signs
- ⚠️ Breaking even takes more than 5 years
- ⚠️ Planning to sell or move soon
- ⚠️ Extending loan term significantly
- ⚠️ Cash-out reduces equity below 20%
- ⚠️ Cannot afford upfront costs
Refinancing Tips
📋 Preparation
- • Check credit score (aim for 760+)
- • Gather financial documents
- • Get home appraised if needed
- • Review current mortgage terms
💰 Cost Reduction
- • Shop multiple lenders (3-5 quotes)
- • Negotiate closing costs
- • Consider no-closing-cost options
- • Ask about lender credits
⏰ Timing
- • Lock rate when satisfied
- • Allow 30-45 days for closing
- • Avoid month-end closings
- • Consider rate trends
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Should You Refinance? The Break-Even Math
A refinance is a bet that upfront costs today will be repaid by lower payments tomorrow. The decision comes down to one number most rate advertisements never mention: the break-even point— the month when your accumulated monthly savings finally exceed what you paid in closing costs. Refinance closing costs typically run 2-6% of the loan amount, covering origination fees, appraisal, title work, and recording. Until you cross break-even, the "cheaper" loan has cost you money.
This calculator goes a step further than payment comparison. It shows the effect of rolling closing costs into the loan, models cash-out amounts, and — critically — compares total interest over the life of each loan, which exposes the hidden cost of resetting a partially paid mortgage back to a full 30-year term.
What the Numbers Mean
- Monthly savings — your current payment minus the new one. Positive savings are necessary but not sufficient; a longer term can produce "savings" that are really deferred principal.
- Break-even point — upfront closing costs divided by monthly savings. Compare it honestly against how long you expect to keep the loan, not the house — a future move or another refinance both end the clock.
- Lifetime savings — total remaining payments on the old loan versus all payments on the new loan plus upfront costs. This is where a term reset shows its true price.
- First-year savings — a quick gut check: negative first-year savings with a long break-even is a sign you are paying for a rate you may never fully use.
A Worked Example
Suppose you owe $300,000 at 6.5% with 25 years (300 payments) remaining — a payment of about $2,026 per month. Refinancing into a 30-year loan at 5.5% with $5,000 in closing costs paid upfront drops the payment to roughly $1,703. That is $323 in monthly savings and a break-even of about 16 months. But note the fine print: you traded 25 remaining years for 30, so while cash flow improves immediately, total interest paid only comes out ahead because the rate cut is a full point. At a quarter-point cut, the same term reset would leave you paying more over the life of the loan despite a lower payment — exactly the trap the lifetime-savings figure is designed to catch.
Frequently Asked Questions
When is refinancing a mortgage worth it?
The classic threshold is a rate drop of at least 0.75-1 percentage point, but the better test is the break-even point: divide your closing costs by your monthly savings. If closing costs are $5,000 and you save $320 per month, you break even in about 16 months — worthwhile if you plan to stay in the home well past that. If you expect to sell or refinance again before the break-even month, the refinance loses money regardless of how attractive the new rate looks.
Why can a lower monthly payment still cost more overall?
Because refinancing usually resets the clock. Swapping a loan with 25 years remaining for a fresh 30-year term means five extra years of interest, and much of what looks like savings is really just a stretched-out payoff. To compare fairly, look at total interest over the life of each loan, or refinance into a term that matches your remaining years — for example, a 25-year-old loan into a 20-year refinance.
Should I roll closing costs into the new loan?
Rolling $5,000 of closing costs into the loan means no cash out of pocket and an immediate break-even, but you pay interest on that $5,000 for the full term — at 5.5% over 30 years, roughly $5,200 in added interest on top of the fees themselves. Paying costs upfront is cheaper if you have the cash and will stay in the home long-term; rolling them in makes sense mainly when you are short on cash or fairly likely to move within several years.
Is a cash-out refinance a good way to pay for renovations?
It can be, if the math holds. Cash-out refinancing typically prices 0.125-0.25 points above a standard refinance and increases your loan balance, so the borrowed money should go toward something durable — a renovation that adds value, or retiring higher-interest debt — rather than consumption. Compare it against a HELOC or home equity loan: if your existing first-mortgage rate is already low, disturbing it just to extract cash is usually the more expensive path.