Almost every guide to when to refinance your mortgage repeats one rule: wait for a one-point drop. That rule was written when closing costs were smaller and nobody had a 2.8% pandemic loan behind them.
The rule that works has two numbers in it. How many months until the savings repay the cost, and how many months you plan to stay. Points, credits, and the shape of the offer matter only because they move those two. DollarVisor takes no payment for placement, and no lender can buy its way into the tables below.
1. The Short Answer: Four Things Have to Line Up
Quick Answer: Refinance when four conditions hold at once: the new rate is meaningfully below yours, you can keep or shorten your payoff date, you will stay past the break-even month, and you can pay the costs without adding them to the balance. Miss any one and the deal usually turns negative.
Most people fail the third and fourth conditions. The rate looks good, so the other three never get checked.
- A real rate gap. Enough of one that the monthly saving clears the costs in a period you can name.
- The same payoff date, or sooner. A new 30-year term on an eight-year-old loan hands back most of the rate saving.
- Time in the house. If you are moving in three years and break-even is 55 months, the answer is no.
- Cash at closing. Rolling costs into the loan means paying interest on your own closing costs for decades.
Everything below puts numbers on those four. Our guide to how mortgages work from first payment to last covers the amortization behavior these decisions depend on, and the wider DollarVisor borrowing guide shows where a refinance sits among the alternatives.
2. How Big a Rate Drop You Actually Need
Quick Answer: Break-even is closing costs divided by monthly savings. On a $340,000 balance with 27 years left at 7.50%, dropping to the 6.66% average takes 55 months to repay $10,200 in costs. A quarter-point less (6.50%) cuts that to 46 months.
The Federal Reserve’s consumer guide puts refinancing fees at 3 to 6 percent of outstanding principal. The table runs the low end of that range, holding the payoff date fixed so rate is the only variable.
| New rate | New payment | Saved per month | Break-even | Net saved by payoff |
|---|---|---|---|---|
| 7.00% | $2,339 | $112 | 91 months | $26,063 |
| 6.75% | $2,283 | $167 | 61 months | $43,925 |
| 6.66% (July 2026 average) | $2,264 | $187 | 55 months | $50,310 |
| 6.50% | $2,229 | $222 | 46 months | $61,601 |
| 6.25% | $2,175 | $276 | 37 months | $79,087 |
| 6.00% | $2,122 | $329 | 31 months | $96,378 |
| 5.75% | $2,069 | $382 | 27 months | $113,471 |
Read the break-even column, not the savings column. At 7.00% you still save $26,063 in theory, but only after staying 91 months. The 30-year average sat at 6.66% on July 30, 2026, so 55 months is the number most borrowers have to beat.
Run your own break-even before you call a lender.
Put in your balance, your rate, and the quoted rate to see the month it flips. Open the mortgage calculator →
3. Are You Even in the Money? Most People Are Not
Quick Answer: Only 22.1% of US mortgages carried a rate above 6% in the first quarter of 2026. Half of all outstanding loans are under 4%. If you are in that half, no rate available in 2026 can save you money, and the question answers itself.
The standard refinance article treats every reader as a candidate. Federal Housing Finance Agency loan-level data says most are not.
| Rate band | Share of all loans | % |
|---|---|---|
| Below 3% | 21.9% | |
| Below 4% | 49.9% | |
| Below 5% | 66.7% | |
| Below 6% | 77.9% | |
| Above 6% (the refinance pool) | 22.1% |
The benefiting group is narrower still than 22.1%, because a loan at 6.4% has no useful gap to a 6.66% market. The real candidates closed above 7% in 2023 or 2024. Rates have circled this level for three years (6.72% a year ago against 6.66% now) so waiting has been free and also pointless.
4. What Your State Charges Before Any Lender Fee
Quick Answer: Some states tax the mortgage document itself, and refinancing means recording a new one. On a $340,000 loan that is $1,190 in Florida and $3,375 or more in New York: before a single lender charge. In most states the line is a flat fee under $200.
National refinance advice quietly assumes this cost is zero. In two of the country’s largest housing markets it is not.
| Where | Published rate on the mortgage | Due on $340,000 |
|---|---|---|
| Florida, every county | 35¢ per $100, no cap on mortgages | $1,190 |
| New York, outside the MCTD | 50¢ basic + 25¢ special + 25¢ additional | $3,375 |
| New York, MCTD county | additional tax rises to 30¢ | $3,540 |
| New York, with a 50¢ local add-on | city or county tax of 25¢ to 50¢ | $5,240 |
| Most other states | no percentage tax on the mortgage | flat recording fee |
Put the New York City-area figure back into section two. An extra $5,240 on top of $10,200 stretches a 55-month break-even to roughly 83 months. The rate did not change. The address did.
In New York, ask whether the existing mortgage can be assigned and modified rather than discharged and re-recorded, which often avoids paying the tax twice: confirm with the lender and your county recording office. Everywhere, ask for the tax line by name, because no lender can discount a government charge.
5. The Reset Trap: A Lower Rate That Costs More
Quick Answer: Refinancing a 27-year balance into a fresh 30-year loan at 6.66% saves only $7,385 in interest despite cutting the rate by 0.84 points. After $10,200 in closing costs, that refinance loses $2,815. The same rate on a 27-year term saves $60,510.
The Federal Reserve warns that refinancing late in a loan restarts the amortization process. In dollars, that warning looks like this.
| Option | Payment | Months left | Interest from here | vs. keeping it |
|---|---|---|---|---|
| Keep 7.50%, 27 years left | $2,450 | 324 | $453,960 | : |
| Refi 6.66%, fresh 30-year | $2,185 | 360 | $446,575 | −$7,385 |
| Refi 6.66%, 27-year term | $2,264 | 324 | $393,450 | −$60,510 |
| Refi 6.66%, 20-year term | $2,567 | 240 | $276,098 | −$177,862 |
| Refi 6.04%, 15-year term | $2,876 | 180 | $177,764 | −$276,196 |
The fresh 30-year is the default quote, because it produces the lowest payment and the easiest yes. It is also the only row that goes negative once you subtract the cost of doing it.
So the question is not only what rate but over how long. Ask every lender for a term matching the years you have left. Most will. Almost none offer it unprompted.
Got a quote with a 30-year term you did not ask for?
Send it over and we will re-run it on your actual remaining years. Ask us to check the term →
6. Five Reasons That Have Nothing to Do With Rates
Quick Answer: A refinance can pay for itself with no rate improvement at all: dropping FHA mortgage insurance, leaving an adjustable-rate loan, removing a co-borrower, shortening the term, or pulling out equity. Each has its own break-even, measured against a different saving.
- Killing mortgage insurance. On many FHA loans the premium runs for the life of the loan. Refinancing to a conventional loan at 80% loan-to-value ends it, and that saving often beats the rate saving. It sits alongside the other cover on your house, which our guide to which types of insurance you actually need puts in order.
- Leaving an adjustable rate. If your ARM is about to reset, price the fixed offer against the worst-case reset, not today’s payment.
- Removing a name. Divorce and partnership splits usually require a refinance, because lenders will not otherwise release a borrower from a note.
- Shortening the term on purpose. The 15-year row above is a $276,196 swing: the largest single lever on this page if the payment fits.
- Taking cash out. The most expensive of the five, because you re-price the whole balance to fund a smaller sum. Compare it against a home equity loan or HELOC, which leaves a low first mortgage untouched.
Point five is where 3% borrowers go wrong. Refinancing $340,000 to release $50,000 gives up that 3% on all of it, not just on the $50,000.
7. When the Answer Is No
Quick Answer: Skip the refinance if you may move before break-even, if your loan is old enough that most payments now hit principal, if your credit has weakened since closing, or if a prepayment penalty applies. Each one quietly cancels the rate advantage.
The Federal Reserve names three outright: a long-held mortgage, a prepayment penalty, and a plan to move soon. Two more matter in 2026.
- You may move. The most common mistake. Break-even is 55 months here; a three-year plan makes it a $10,200 donation.
- Your credit fell. Approval is not the question, pricing is. A lower score can hand back the whole rate gap before you see a quote.
- A prepayment penalty exists. Read the note. Federally insured loans generally cannot carry one; conventional loans sometimes do.
- You would roll the costs in. Financing $10,200 of fees at 6.66% over 30 years adds about $13,400 in interest on top of the fees.
- Your balance is above the conforming limit. Above the 2026 baseline of $832,750 set by FHFA, you refinance into jumbo pricing and stricter underwriting.
There is a positive version of no. If you are still saving for a first purchase, your time is better spent on the state programs available to first-time buyers than on refinance rates.
8. How to Compare Two Offers in Ten Minutes
Quick Answer: Get a Loan Estimate from each lender, force the same term on every quote, then compare four numbers: total closing costs, monthly payment, break-even months, and interest remaining. The lowest rate wins fewer of these comparisons than people expect.
Lenders must issue a standardized Loan Estimate so quotes can be laid side by side. Use it that way.
- Ask three lenders, including your current servicer. The Federal Reserve notes that your existing lender may waive fees to keep the loan.
- Fix the term across all quotes. A 30-year against a 25-year is not a comparison. Name your remaining years and ask everyone to match it.
- Read page 2 of the Loan Estimate. Points, origination, title, and the government tax line live there. That total is your break-even numerator.
- Divide. Costs over monthly saving equals months. Compare that to your stay-length and you are done.
- Check the Closing Disclosure against it. It must reach you three business days before signing. Any line that moved is a question to ask first.
One warning on no-cost offers: nothing is free. The lender either raises your rate for the life of the loan or folds the fees into your balance. Ask for both versions and compare total interest, not cash at closing.
9. The Bottom Line
Quick Answer: Knowing when to refinance your mortgage comes down to two dates: the month your savings repay your costs, and the month you expect to leave. If the first comes well before the second, and the term does not stretch, refinance. Otherwise wait.
The one-point rule survives because it is easy to remember, not because it is right. It ignores your balance, your state, your remaining years, and how long you plan to stay: each of which moves the answer more than a quarter point of rate does.
If you hold a loan above 7%, do three things this week. Pull your note and write down the rate and the months remaining. Ask two lenders for a Loan Estimate on a term matching those months. Then divide closing costs by the monthly saving. That number is the decision.
Not sure whether your refinance quote actually saves money?
Send us your current rate, balance, years remaining, and the quoted terms. We will return the break-even month and the total-interest comparison: no lender referrals, no sponsored placements.
10. Frequently Asked Questions
When is it worth refinancing your mortgage?
Deciding when to refinance your mortgage means checking two things: the break-even month must arrive before you plan to sell or move, and the new term must not extend your payoff date. On a $340,000 balance going from 7.50% to 6.66%, break-even lands at 55 months with $10,200 in costs.
How much lower does the rate have to be?
There is no fixed number, because break-even depends on your balance and your costs as much as the gap. On the base case here, 0.50 points takes 91 months to repay, 0.84 points takes 55, and 1.50 points takes 27. Bigger balances break even faster on the same percentage drop.
How much does it cost to refinance a mortgage?
The Federal Reserve puts refinancing fees at 3% to 6% of the outstanding principal, which is $10,200 to $20,400 on a $340,000 balance. In Florida and New York, state tax on recording the new mortgage adds $1,190 and $3,375 or more respectively, on top of that range.
Does refinancing restart the 30 years?
It does if you accept the default 30-year term, and that is usually what lenders quote. On a loan with 27 years left, resetting to 30 years at 6.66% saves only $7,385 in interest, which is less than the closing costs. Ask for a term that matches your remaining years instead.
Should I refinance if I have a 3% mortgage?
Almost never for rate reasons, since no 2026 rate beats it. Roughly half of all outstanding US mortgages sit below 4%, and those loans are worth keeping. The exceptions are structural: removing a name after a divorce, or ending mortgage insurance that a rate cut cannot address.
Is a no-cost refinance really free?
No. The lender either charges a higher rate for the life of the loan or adds the fees to your balance, where you pay interest on them for decades. Ask for both versions of the same quote and compare total interest rather than cash needed at closing.
This page is for general information and is not financial advice. Rates, taxes, and fees change and vary by lender and county; verify current figures with a licensed lender and your county recording office before making a decision. See our full disclaimer.