Should You Refinance Your Mortgage? A 5-Minute Gut Check

Refinancing sounds like grown-up financial wizardry, but it's really just swapping your current home loan for a new one — ideally at a lower rate. The catch: "lower rate" and "actually saving money" are not always the same thing, and lenders are perfectly happy to let you mix them up.

Here's the five-minute gut check before you sign anything.

It comes down to two numbers

1) Monthly savings. New payment minus old payment. Simple.

2) Break-even point. Refinancing isn't free — closing costs run roughly 2–5% of the loan. Divide those costs by your monthly savings and you get the months until you're genuinely ahead. Staying in the house past that point? Refinance wins. Moving next year? Probably a waste.

The trap nobody mentions

A lower monthly payment can still cost you more. Here's how: refinance a loan you've already paid down for five years back into a fresh 30-year term, and you stretch the debt out — paying more total interest, even at a lower rate. The payment drops; the lifetime cost sneaks up behind you. That's exactly why our calculator shows lifetime interest too, not just the feel-good monthly figure.

When it usually makes sense

• The new rate is meaningfully lower (rough rule: ~0.5–1%+).
• You'll stay in the home past the break-even point.
• You're not resetting the clock in a way that balloons total interest.

Shopping, not refinancing?

If you're buying rather than refinancing, start with what you can actually afford — the affordability calculator and our guide on how much house you can afford keep you off the struggle bus.