Key takeaways
- Divide total closing costs by monthly savings to find your break-even point in months.
- Refinancing makes sense when you expect to keep the loan well past the break-even point.
- Resetting to a new 30-year term can lower payments while raising total interest paid.
- Rate is one reason to refinance; dropping mortgage insurance or switching from an ARM are others.
In this guide
- How to calculate your refinance break-even point
- Why the simple break-even can mislead you
- Signs it may be a good time to refinance
- When refinancing usually does not make sense
- How your equity and credit affect the decision
- Should you pay points to lower the rate?
- Next steps if the numbers work
- The bottom line
- Frequently asked questions
It usually makes sense to refinance when the new loan saves you more than it costs before you sell or pay off the home. Find your break-even point by dividing total closing costs by your monthly savings. If you plan to keep the loan comfortably longer than that many months, a refinance is likely worth it.
That single calculation answers most of the question, but it is not the whole picture. Loan term, how long you have already been paying, and what you want the new loan to accomplish all change the answer. This guide walks through the math, shows worked examples and covers the situations where refinancing makes sense even without a big rate drop.
How to calculate your refinance break-even point
The break-even point is the number of months it takes for monthly savings to repay the upfront cost of refinancing.
- Add up closing costs. Use the Loan Estimate from each lender. Include lender fees, appraisal, title, recording and any discount points. Leave out escrow deposits and prepaid interest, which you would pay in some form either way.
- Find the monthly savings. Compare principal and interest only on your current loan versus the new one. Taxes and insurance do not change because you refinanced.
- Divide. Closing costs divided by monthly savings equals months to break even.
For a fuller understanding of what goes into that closing-cost figure, see our guide to refinance closing costs and no-closing-cost options.
Why the simple break-even can mislead you
The monthly-payment method is quick, but it can flatter a refinance that restarts the clock on a 30-year term. In the example above, you had 28 years left and took a new 30-year loan. Part of the lower payment comes from stretching repayment over two extra years, not from the lower rate.
A more complete comparison looks at total interest you would pay over the period you expect to keep the loan, or matches the new term to your remaining term.
You do not need a new 28-year loan to capture this benefit. Taking a 30-year loan and paying the old payment amount each month achieves a similar effect while keeping the lower required payment as a safety net.
Signs it may be a good time to refinance
Rate is the most common trigger, but several other goals justify a refinance.
| Goal | When it tends to make sense | Watch out for |
|---|---|---|
| Lower your rate | Market rates are meaningfully below yours and you will keep the loan past break-even | Restarting a 30-year term late in your current loan |
| Shorten your term | Your income has grown and you want to pay less total interest | Higher required payment |
| Leave an ARM | Your adjustable rate is about to reset or you want payment certainty | Fixed rates may be higher than your current teaser rate |
| Drop mortgage insurance | Your home value has risen and you now have about 20% equity | Costs of refinancing versus simply requesting PMI removal |
| Tap equity | You need funds for a major project or high-interest debt payoff | Converting unsecured debt into debt secured by your home |
| Remove a co-borrower | Divorce or change in ownership | You must qualify on your own income and credit |
If you currently have an adjustable-rate loan, our comparison of fixed vs. adjustable-rate mortgages explains the tradeoffs. If mortgage insurance is your main cost, compare refinancing with the cheaper option of requesting cancellation in our guide on refinancing to remove PMI.
When refinancing usually does not make sense
A refinance can cost thousands of dollars, so it is worth being honest about the cases where it is a poor deal:
- You plan to sell before break-even. You would pay closing costs without recovering them.
- You are far into your loan. Late in a mortgage, most of each payment goes to principal, so a lower rate saves less interest than you might expect.
- Your credit has slipped. A lower score can mean a higher rate than advertised, erasing the savings.
- You would stretch debt out too long. Rolling costs into a new 30-year loan can raise the total you pay even if the monthly bill drops.
- There is a prepayment penalty on your current loan. Rare on modern loans, but check your note.
How your equity and credit affect the decision
Your rate offer depends heavily on your credit score and loan-to-value ratio (LTV), which is your loan balance divided by the home's appraised value. Borrowers with strong credit and at least 20% equity typically see the best pricing and avoid private mortgage insurance on conventional loans. Higher LTVs or lower scores can add pricing adjustments that shrink or eliminate the benefit.
Before you shop, check your credit reports for errors and estimate your home value from recent comparable sales. Our overview of refinance requirements covers credit, debt-to-income and equity thresholds in more detail.
Should you pay points to lower the rate?
Discount points are upfront fees that buy a lower rate. Each point usually costs 1% of the loan amount, though the rate reduction per point varies by lender and market. Points make sense only if you will keep the loan long enough to recover them.
Get quotes both with and without points on the same day so you can compare them fairly, since rates change daily.
Next steps if the numbers work
Once your break-even looks favorable, gather two or three Loan Estimates from different lenders on the same day and compare the rate, APR and total closing costs line by line. Our step-by-step guide on how to refinance a mortgage covers applications, appraisals, rate locks and closing.
The bottom line
Refinance when the savings will clearly outlast the costs. Divide closing costs by monthly savings, then check that your expected time in the home is comfortably longer. Compare total interest, not just the payment, especially if the new loan resets your term.
Frequently asked questions
How much lower should my rate be to refinance?
There is no single threshold. An old rule of thumb said one percentage point, but a smaller drop can still pay off on a large balance with low closing costs, while a bigger drop may not be worth it if you plan to sell soon. Run the break-even math with your actual loan amount, costs and time horizon instead of relying on a fixed rule.
Is it worth refinancing if I plan to move in a few years?
Usually only if your break-even point arrives well before you expect to move. If closing costs are 6,000 dollars and you save 200 dollars a month, you need 30 months just to recover costs. Moving sooner than that means the refinance loses money. A no-closing-cost option can make short horizons work, but it carries a higher rate.
How soon can I refinance after buying a house?
Some rate-and-term refinances can happen within months, but many programs require a waiting or seasoning period. Cash-out refinances on conventional loans commonly require about 12 months of ownership, and FHA streamline and VA IRRRL loans require roughly 210 days plus a set number of payments. Your lender will confirm the rule for your loan type.
Does refinancing hurt your credit score?
A refinance usually causes a small, temporary dip. The lender runs a hard credit inquiry, and the new loan replaces an older account, which can slightly lower the average age of your accounts. Scores typically recover within months with on-time payments. Rate shopping within a short window is generally treated as a single inquiry by common scoring models.
Should I refinance to a 15-year mortgage?
A 15-year loan usually carries a lower rate and saves a large amount of total interest, but the monthly payment is noticeably higher because you repay principal twice as fast. It fits borrowers with stable income, a solid emergency fund and room in the budget. If the higher payment would strain you, a longer term with voluntary extra payments offers more flexibility.
Official Resources & Further Reading
Use these resources to check current guidance. Requirements and availability may vary by state and provider.
This guide is for general educational purposes and is not individualized financial, legal, tax or insurance advice. Product terms, rates and availability vary by provider and location. How we make money.
