When Refinancing Actually Saves Money
A lower rate is not automatically a win. Refinancing costs money. It pays off when monthly savings and interest reduction beat those costs in the time you expect to keep the loan.
The break-even test
Add estimated closing costs. Divide by the monthly savings after the new payment starts. That is a simple break-even in months. If you plan to sell or refinance again before that date, the refinance may not be worth it.
Also check lifetime interest. A lower payment on a brand-new 30-year term can cost more interest even if the rate drops, because you restart the clock.
Rate-and-term vs cash-out
Rate-and-term refinance replaces your loan to change the rate or term. Cash-out replaces it with a larger loan and gives you the difference in cash. Cash-out pricing and equity limits are usually tighter.
If you only need flexible access to equity, compare a HELOC before you replace a low first-mortgage rate.
Other reasons people refinance
Savings is the main reason, but not the only one:
- •Removing mortgage insurance after you have enough equity
- •Switching from an adjustable rate to a fixed rate
- •Shortening the term to pay the house off faster
- •Changing loan types, such as FHA to conventional
Estimate a monthly payment
$300,000
6.5%
30 years
Frequently asked questions
How much should the rate drop before I refinance?
There is no universal number. A small drop can work on a large balance if costs are low and you will keep the loan long enough. Run break-even on your file.
Can I roll closing costs into the new loan?
Often yes, which raises the new balance. That can still make sense if you stay in the home long enough, but it changes the math.
Will refinancing restart my 30-year clock?
It can. You can choose a shorter term. Compare the new payoff date, not just the new payment.
Is a cash-out refinance the same as a HELOC?
No. Cash-out replaces your first mortgage. A HELOC is usually a second lien you draw as needed. See our cash-out vs HELOC guide.