The advertised refinance rate is a market average. Your rate is something else — a number built from your credit score, your equity, your debt-to-income ratio and how many lenders you bothered to ask.
Two homeowners refinancing the same balance on the same day can be offered rates a full percentage point apart. This guide is about being the one who gets the better number.
For where rates currently sit and why they’ve moved, see our separate piece on refinance rates crossing 7%.
What actually sets your rate
| Factor | Effect | Can you change it? |
|---|---|---|
| Credit score | Large | Yes, in 3–6 months |
| Loan-to-value ratio | Large | Sometimes |
| Debt-to-income ratio | Large | Yes |
| Loan term | Large | Yes |
| Discount points paid | Moderate | Yes |
| Property type and occupancy | Moderate | No |
| Which lenders you asked | Moderate | Yes |
Four of the seven are within your control, and three of those can be improved in a few months. That’s where the work goes.
Credit tiers, and why 20 points matter
Lenders don’t price on a smooth curve — they price in bands. In the US these typically break around 620, 660, 700, 740 and 760.
The practical consequence: moving from 738 to 742 can shift you into a better pricing tier and change your rate, while moving from 700 to 735 might change nothing. Small improvements matter enormously at the boundaries and barely at all in the middle.
The fastest lever is credit utilization, which is roughly 30% of your score and responds within a single billing cycle. Paying card balances down below 10% before applying is the highest-return action available, and paying before the statement closes — rather than before the due date — is what gets the lower figure reported.
Give yourself three to six months. Our guide to improving your credit before applying for a loan sets out the timeline.
Loan-to-value: the band you might already be in
LTV is your loan balance divided by the home’s current value. Lenders price in bands here too — commonly 80%, 75% and 60%.
Two things may have moved you into a better band without you noticing: years of principal repayment, and property appreciation. Someone who bought at 90% LTV five years ago may now sit below 80% purely from those two forces.
Crossing below 80% does two things at once — it improves your rate tier and, in the US, eliminates private mortgage insurance. On a $300,000 loan, dropping PMI alone can be worth $150–$250 a month, which frequently exceeds the interest saving.
If you’re close to a threshold, paying a small amount down at closing to cross it can be worth far more than the cash involved. Ask the lender where the boundaries fall.
Debt-to-income is often the binding constraint
Lenders compare your total monthly debt payments against gross income. Many want this under roughly 43%, and it’s frequently what limits approval rather than the credit score.
A useful nuance: paying off one small loan entirely does more than paying a little off several. DTI counts monthly payments, not balances. Clearing a $300-a-month car loan removes $300 from the calculation; paying $2,000 across three credit cards may change it barely at all.
Discount points: doing the maths
A discount point costs 1% of the loan amount and typically reduces the rate by around 0.25%. On a $300,000 refinance, one point is $3,000.
Whether it’s worth it depends entirely on how long you’ll keep the loan. If a point saves you $45 a month, the break-even is about 67 months — five and a half years. Stay longer and you’re ahead; move sooner and you’ve donated $3,000.
Lenders often present points as a lower headline rate without foregrounding the upfront cost. Always ask for quotes with and without points, then compare the total cost over the period you actually expect to stay.
The break-even calculation
Everything reduces to this:
Break-even months = total closing costs ÷ monthly saving
Closing costs typically run 2% to 5% of the loan amount — origination, appraisal, title, recording. On a $300,000 refinance that’s $6,000 to $15,000.
If refinancing saves you $180 a month and costs $8,000, your break-even is about 44 months. The question then isn’t whether the new rate is lower. It’s whether you’ll still own this home in four years.
“No-cost” refinances aren’t free. The costs get folded into a higher rate or added to your principal. That can be the right choice if you’re unsure how long you’ll stay — you avoid the upfront outlay — but run both versions and compare.
Shopping lenders properly
This is the part most homeowners skip, and it’s worth more than most of the above.
Get quotes from at least three to five lenders inside a two-week window. Credit bureaus treat multiple mortgage inquiries in a short period as a single event, so comparison shopping doesn’t damage your score. In the US the window is typically 14 to 45 days depending on the scoring model.
Ask each for a Loan Estimate. It’s a standardised form, which makes lenders genuinely comparable side by side. Compare APR and total closing costs rather than the headline rate — a lower rate with higher fees frequently costs more. The Consumer Financial Protection Bureau explains how to read one.
Include different lender types. Credit unions, online lenders and mortgage brokers price differently from big banks, and the spread between the cheapest and most expensive quote on identical terms is often substantial.
Ask your current servicer too. Some offer streamlined refinances with reduced documentation and lower costs.
When not to refinance
You’re moving within the break-even period. The most common expensive mistake.
You’d restart a 30-year clock you’re eight years into. A lower rate on a fresh 30-year term can still cost more in total interest. Ask for a term matching your remaining years.
Your credit has worsened. You may be offered a worse rate than you already have.
You can’t cover closing costs without draining savings. Refinancing should never be why you have no buffer — see our emergency fund guide.
Cash-out: the caution worth reading
Cash-out refinancing to consolidate credit card debt looks compelling — swap 22% card interest for 7% mortgage interest. Two things get lost in that comparison.
You’re converting unsecured debt into debt secured by your home. Miss payments on a credit card and your credit suffers; miss payments on a mortgage and you can lose the house.
And you’re stretching a three-year problem across 30 years of interest. A lower rate over a much longer term can cost more in total.
Compare it honestly against balance transfers and personal loans first. Those don’t put your home at risk.
How this works outside the US
United Kingdom. You remortgage rather than refinance, typically every two to five years when a fixed deal ends. Most lenders let you lock a new deal up to six months ahead. The mistake to avoid is falling onto the standard variable rate.
Canada. Breaking a fixed mortgage before term triggers an interest rate differential penalty that can run to five figures — often more than the interest saved. Variable mortgages carry cheaper break costs, usually three months’ interest.
Europe. Prepayment penalties vary enormously by country, and notary and registration costs are significant. German borrowers have a statutory right to exit a fixed mortgage after ten years with six months’ notice — see our guide to refinancing for European homeowners.
Frequently asked questions
How much lower does the rate need to be?
There’s no universal threshold — the old “1% rule” was never precise. Run your break-even. On a large balance, even half a point can justify the costs.
Does shopping around hurt my credit?
No, within the rate-shopping window. Multiple mortgage inquiries in a short period count as one.
Can I refinance with less than 20% equity?
Usually, but expect mortgage insurance and a worse rate. US borrowers with FHA or VA loans may qualify for streamline programs with fewer requirements.
Should I take a shorter term?
If you can afford the payment, yes — 15-year rates typically run well below 30-year, and the lifetime interest saving is substantial. Compare both, as covered in fixed vs variable mortgage rates.
The bottom line
Spend three months on your credit utilization before applying, check whether repayment and appreciation have moved you into a better LTV band, and clear one small monthly obligation rather than chipping at several.
Then get Loan Estimates from three to five lenders inside two weeks, compare APR and total costs rather than headline rates, and run the break-even against how long you’ll realistically stay.
The market sets the average. That preparation is what decides whether you land above or below it — and on a 30-year loan, the difference compounds into tens of thousands.
Sources
- CFPB Loan Estimate — the standardised form that makes lenders comparable
- CFPB on private mortgage insurance — when PMI applies and when it can be removed
- CFPB on discount points — how points affect your rate
- FICO — score tiers and rate-shopping windows
Closing cost ranges and LTV pricing bands reflect typical lender practice rather than fixed rules, and vary by lender and region. Your Loan Estimate is the authoritative document for your own figures.
Last reviewed: 15 August 2026. Rates and lending criteria change frequently — we review this article when they do.
General information only, not personalised mortgage advice. Rates, costs and lending criteria vary by lender, country and individual circumstances and change frequently. Speak with a licensed mortgage professional before deciding.
