The 1% rule is not a real decision guide.
You may have heard that refinancing only makes sense if rates fall by at least one percentage point. That can be a helpful shortcut, but it is not reliable enough for a real decision.
A large loan balance can make a smaller rate drop meaningful. A smaller balance can make the same rate drop barely matter.
Same rate drop, different outcome
$750,000 balance
A drop from 7.00% to 6.50% can produce meaningful monthly savings. If costs are reasonable, the break-even may be short enough.
$200,000 balance
The same half-point drop may not save enough each month to justify similar closing costs.
The rate movement is identical. The homeowner decision is not.
What actually determines the answer
- Loan balance.
- Total closing costs.
- Whether points are included.
- Monthly payment savings.
- How long you expect to keep the loan.
- Whether the refinance also solves another goal.
The better question
Do not ask whether rates dropped “enough” in the abstract. Ask how long it takes the savings to recover the costs.
A 0.5% drop can be worth it. A 1.0% drop can be weak. The math depends on the full quote.
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Do not compare the rate by itself
A refinance quote is a package. The rate matters, but so do points, lender credits, closing costs, appraisal assumptions, lock timing, and how long the homeowner expects to keep the loan.
A quote with a lower rate can be more expensive if the cost to get that rate takes too long to recover.
Quote questions worth asking every time
- What is the rate with zero points?
- Are lender credits included?
- What are the total closing costs?
- Which costs could still change?
- How long is the break-even period?
- What happens if I sell, move, or refinance again?
The practical test
A good quote should get clearer when you ask questions. If the quote becomes harder to understand, or if the conversation shifts back to the headline rate every time you ask about cost, slow down and compare the structure more carefully.