Two homeowners on the same street, similar credit scores, nearly identical loan balances, both refinancing in the same week. One locks at 6.25%. The other signs at 6.875%. Both quotes are genuine, and neither lender is lying to anyone. That gap is the most useful thing to understand about home refinance rates: the number you’re shown isn’t a market price, it’s a price assembled for you out of a set of details you control more of than most people realize.
What actually sets your refinance rate
Every refinance quote starts with the same raw material. Mortgage rates track the yield on mortgage-backed securities, which move with the 10-year Treasury and the market’s expectations for inflation and Fed policy. That part is identical for everyone on a given afternoon.
Next, the lender stacks on its own margin plus a series of loan-level price adjustments. These are where two quotes for the “same” borrower begin to separate:
- Credit score. On a conventional loan, sliding from the 740–759 tier into the 680–699 tier usually costs about 0.25% in rate. Land in the low 620s and you can add a full point or more.
- Loan-to-value. At 80% or below, there’s no mortgage insurance. Above it, you pay for coverage on top of the rate, and the pricing tiers get steeper as LTV climbs.
- Cash-out versus rate-and-term. Pulling equity out typically prices 0.125% to 0.375% higher than a straight rate-and-term refinance on the same house.
- Occupancy and property type. An investment property runs roughly 0.5% to 0.875% above a primary residence. Condos, 2–4 unit buildings, and homes on larger acreage each have their own pricing grid.
- Term and loan size. A 15-year fixed usually sits about 0.5% below the 30-year. A 5/6 ARM can come in another 0.75% to 1.5% lower again. Jumbo loans price off an entirely different menu.
Half a percentage point looks harmless in a headline. Attached to a $340,000 balance, it’s about $110 a month, or roughly $39,000 across 30 years. That’s the real cost of accepting the first quote that lands in your inbox.
The advertised rate and the rate on your Loan Estimate
Lenders advertise the best-case version of their pricing: highest credit tier, 60% loan-to-value, primary residence, no cash out, and enough discount points to buy the rate down. It’s not false advertising, but it is a marketing number, not a quote. The rate you’re quoted is really a range, and the width of that range depends on facts about you and your property.
Discount points are the sneaky part. One point costs 1% of the loan amount and typically buys the rate down by 0.25%. On a $340,000 loan, that’s $3,400 to save maybe $55 a month. Sometimes it’s the right trade. Often it’s the lender padding its margin by selling you a lower number without mentioning what it cost you to get it.
Run the break-even before you commit to a lower number
Take a homeowner with a $340,000 balance at 7.25%, who has 27 years left and is offered 6.375% for $4,800 in closing costs. Principal and interest drops from about $2,319 to $2,121. That’s $198 a month.
Divide the cost by the monthly savings: $4,800 ÷ $198 = roughly 24 months. If they stay in the house longer than two years, they come out ahead. If they sell in 18 months, they handed the lender a check for nothing.
The trap nobody mentions: the clock resets
That $198 savings assumes the new loan also runs 30 years. Refinancing restarts the amortization schedule, so on a quick glance you may be saving monthly cash while paying more total interest over the life of the loan. If you were 22 years into a 30-year note, compare the new 30-year payment against your existing payment over the remaining 8 years, or ask for a 15- or 20-year term. A different term changes the whole calculation, which is why it’s worth understanding what today’s rate actually costs you each month at different lengths.
Add up what you can roll in
Closing costs on a refinance usually land between 2% and 5% of the loan amount, so $6,800 to $17,000 on a $340,000 balance. You can pay them in cash, roll them into the loan, or take a slightly higher rate in exchange for lender credits toward them. Rolling them in raises the balance, which raises the payment, which stretches the break-even. Do the arithmetic with the real number, not the one on the flyer.
How to compare three offers in an afternoon
Averages are a starting point, never a quote. It helps to know what the average rate actually costs you each month, but no average will tell you whether your particular house, credit profile, and cash-out request price above or below it.
Get three Loan Estimates on the same day for the same loan amount and term. Then compare:
- The interest rate and the APR side by side, since APR folds in fees.
- Box A on page 2 (origination charges) and Box B (services you cannot shop for).
- Section E, which totals what you’ll actually bring to closing.
- The lender credits in Box J, which offset costs but usually raise the rate.
Lenders must send a Loan Estimate within three business days of your application, and it’s binding on fees once you’ve expressed intent to proceed. Some of what you get beforehand is verbal and soft. This is the document that counts, and it explains why the quote you see often isn’t the one you get.
Fixed or adjustable, and how long to lock
If you plan to stay put for a decade, a 30-year fixed removes a lot of risk for a modest premium. If you’re likely to sell or refinance again within five to seven years, an ARM’s discount can be worth the tradeoff, provided you read the caps: initial adjustment cap, periodic cap, lifetime cap, and the fully indexed margin. A “5/6 ARM” at 1% below the fixed rate is a good deal for four years and a bad one in year seven if rates have climbed.
On locking, a 30-day lock is cheapest, a 60-day lock is safer if your closing could slip, and extensions typically cost 0.05% to 0.125% of the loan amount. If your rate lock expires before closing, you re-price at whatever the market offers that day. Given how much weekly rate moves can shift the payment math, a float-down option is worth asking about, even if it costs a small fee up front.
What to ignore in the headlines
A national average rate is a survey result, not an offer. It won’t tell you that your condo in a resort town prices 0.75% higher, or that your 742 credit score puts you one tier below the best pricing, or that pulling $40,000 out for a kitchen remodel changes your rate by a quarter point. Those details live in the loan estimate, not the news.
The better habit is to shop with a target payment and a break-even date in hand. Know how long you plan to own the home. Get three quotes on the same day. Compare the APR alongside the rate, and keep the closing cost total in front of you while you decide. Anyone who won’t put a number in writing before you apply is telling you something useful about how the rest of the process will go. For a clear-eyed look at why the headline figure rarely matches the real offer, it’s worth reading up on how rate quotes drift from application to closing before you sign anything.