Refinancing a mortgage: when does it make sense?
A lower rate is not enough — compare closing costs with monthly savings, and consider how long you will keep the loan.
Sourced from official pages · Updated September 30, 2026💡 Key takeaways
- Divide closing costs by monthly savings to find the break-even months.
- Refinancing into a new 30-year term restarts the clock and can raise total interest.
- Other reasons to refinance: ARM to fixed, shorter term, removing mortgage insurance or cash-out.
- Compare Loan Estimates and total cost, not only the new payment.
The break-even test
Divide the refinance closing costs by the monthly payment savings. The result is the number of months to recover the costs. If you will keep the loan longer than that, refinancing may pay off. Use the refinance break-even tool.
Watch the term
If you refinance into a new 30-year loan after several years of payments, you restart the clock: the payment may fall while total interest can rise. Compare total interest, not only the payment.
Other reasons to refinance
- Switch from an adjustable rate to a fixed rate.
- Shorten the term (for example from 30 to 15 years).
- Remove mortgage insurance once you have enough equity (check if you can simply request PMI cancellation first).
- Take cash out — this increases the loan balance and interest.
Costs of refinancing
A refinance has closing costs similar to a purchase loan (origination, appraisal, title and others). Some “no-closing-cost” refinances bake the costs into a higher rate or the loan balance; see the CFPB link in the sources.
Steps to take
- Check your current balance, rate and any prepayment penalty.
- Get Loan Estimates from several lenders on the same day.
- Compute the break-even and total-interest comparison.
- Lock the rate and complete the appraisal and paperwork.
🔤 Key terms
| Term | Meaning |
|---|---|
| Rate-and-term refinance | Changes the rate or term without taking cash out |
| Cash-out refinance | New larger loan that pays your old loan and gives you cash |
| Break-even point | Months to recover the closing costs from monthly savings |
| Prepayment penalty | A fee some loans charge for paying off early |
Scenarios
| Scenario | Consider |
|---|---|
| Rates are lower and you will stay several years | Refinance may pay off; compute break-even |
| You want out of PMI | Check if you can request cancellation without refinancing |
| You want to shorten the loan | A shorter term raises the payment but reduces total interest |
🧮 Example: break-even (hypothetical)
Closing costs of $4,800 and monthly savings of $120 give a break-even of $4,800 ÷ $120 = 40 months. If you expect to stay longer than about three and a half years, the refinance may pay for itself; if not, it may not. Try it in the mortgage calculator’s refinance tool.
⚠️ Common mistakes to avoid
- Refinancing without calculating break-even.
- Extending the term and paying more interest overall.
- Rolling closing costs into the loan without comparing.
- Taking cash out for spending that does not build value.
🛠️ Try it yourself
❓ Frequently asked questions
How much lower does the rate need to be?
There is no single rule; compute the break-even with your own costs.
Can I refinance with less than 20% equity?
Often yes, but mortgage insurance may apply.
Does refinancing hurt my credit?
Applying can cause a hard inquiry; see the credit inquiries guide.
Does a refinance restart the clock?
A new loan starts a new term; compare total interest, not only the payment.
📚 Sources
This guide is general information, not financial, tax or legal advice. Rules and limits change; confirm with the sources above or a licensed professional.