How Refinance Rates Work and What Affects Yours

What refinance rates are and why they matter

A refinance rate is the interest rate a lender offers when you replace your current mortgage with a new one. It is not the same as your current rate — it is what the market is offering today. If rates have dropped since you took out your original mortgage, refinancing at a lower rate means you pay less interest over time. If rates have risen, refinancing costs you more, and you would need a different reason to do it (like shortening your loan term or switching from an adjustable to a fixed rate).

The rate you actually receive depends on several factors lenders measure: your credit score, how much equity you have in the home, the loan amount, how long you want to borrow for, and current market conditions. Two people refinancing the same week will not necessarily get the same rate.

Key Takeaways

• Your refinance rate depends on your credit score, home equity, loan amount, loan term, and what the broader market is doing — not just on national averages you see in the news.
• Lenders charge different rates, so comparing offers from at least three lenders before committing tells you whether you are getting a competitive rate.
• The difference between a 6.5% rate and a 7% rate costs you tens of thousands of dollars over 30 years, so small rate differences matter.
• Closing costs for a refinance typically run 2% to 5% of the loan amount, and you need to calculate whether the interest savings will cover those costs before the rate drop is worth it.

How lenders set refinance rates

Lenders start with a baseline set by the bond market and the Federal Reserve's actions, then add their own margin on top. The baseline moves daily based on what investors are willing to pay for mortgage-backed securities. When that baseline drops, lenders can offer lower rates. When it rises, rates go up across the industry.

On top of that baseline, each lender adds points to cover their costs and profit. A lender offering a 6.5% rate might be using a 5.8% baseline and adding 0.7 percentage points. Another lender using the same baseline might add 1.0 point and offer 6.8%. That is why shopping around matters — the baseline is the same for everyone, but the markup is not.

Lenders also adjust rates based on how risky they see the loan. A borrower with a 750 credit score and 40% equity in the home gets a better rate than someone with a 650 score and 10% equity, even if they are borrowing from the same lender on the same day.

What your credit score and home equity mean for your rate

Your credit score is one of the fastest ways a lender decides your rate. Scores above 740 typically get the best rates available that day. Scores between 700 and 739 usually see a small bump up — maybe 0.25 to 0.5 percentage points higher. Below 700, the increase gets steeper. A score of 620 to 639 might cost you 1 to 2 full percentage points compared to a 740-plus score.

Home equity — the difference between what your home is worth and what you owe — also shifts your rate. If you owe $200,000 on a home worth $400,000, you have 50% equity. Lenders see this as low-risk because they can recover their money if you default. If you owe $350,000 on that same home, you have only 12.5% equity, and the lender takes on more risk. Borrowers with less than 20% equity often pay higher rates and may be required to carry mortgage insurance.

The loan amount itself can affect your rate too. Very large loans sometimes carry slightly higher rates because they represent more risk to the lender. Very small loans sometimes cost more per dollar because the lender's fixed costs are spread across a smaller amount.

Fixed rates versus adjustable rates in refinancing

When you refinance, you choose whether to lock in a fixed rate (the same rate for the entire loan term) or take an adjustable rate (a rate that starts low but can change after a set period). Most people refinancing choose fixed rates because they want predictable monthly payments and protection if rates rise later.

An adjustable-rate refinance might offer a lower starting rate — perhaps 6.0% instead of 6.5% — but that rate is only may provide for a set time, often 3, 5, 7, or 10 years. After that period ends, the rate adjusts based on market conditions, usually once per year, and can rise significantly. If you plan to sell or refinance again before the adjustment period ends, an adjustable rate can save you money. If you plan to stay in the home for 15 or 20 years, a fixed rate removes the risk of payment shock later.

Closing costs and whether refinancing makes financial sense

Refinancing is not free. You pay closing costs — fees for the appraisal, title search, underwriting, origination, and other services. These typically range from 2% to 5% of the new loan amount. On a $300,000 refinance, that is $6,000 to $15,000 out of pocket or rolled into the new loan balance.

To know whether refinancing is worth it, calculate your break-even point: divide your closing costs by your monthly savings. If closing costs are $9,000 and you save $150 per month, your break-even point is 60 months (5 years). If you plan to stay in the home longer than that, refinancing makes financial sense. If you might move or refinance again within 5 years, it may not.

Some lenders offer "no-closing-cost" refinances, but this is not assistance programs — the lender builds the costs into your interest rate, so you pay a higher rate for the life of the loan. This can still make sense if you plan to refinance again soon or if you cannot afford to pay closing costs upfront, but compare the higher rate against the savings from avoiding upfront costs.

How to compare refinance rate offers

When you get a rate quote from a lender, ask for a Loan Estimate — a standardized form that shows the interest rate, monthly payment, closing costs, and other terms. This is the document to use when comparing offers, because it breaks down costs the same way across all lenders.

Get quotes from at least three lenders — a bank, a credit union, and a mortgage broker or online lender. Rates can vary by 0.5 percentage points or more between lenders, and that difference compounds over 30 years. A 0.5 percentage point difference on a $300,000 loan costs roughly $150 per month, or $54,000 over 30 years.

When comparing, look at the annual percentage rate (APR) as well as the interest rate. The APR includes closing costs spread across the loan term, so it gives you a fuller picture of the true cost. A lender quoting a lower interest rate but higher closing costs might actually cost you more than a lender with a slightly higher rate but lower fees.

Rate locks and how long they last

Once you choose a lender and rate, you can lock in that rate, meaning the lender guarantees it will not change during your refinance process. Lock periods typically last 30, 45, or 60 days. If your refinance closes within that window, you get the locked rate. If it does not close in time, the lender can offer you the current market rate (which might be higher or lower) or let you extend the lock, usually for a fee.

Locking early protects you if rates rise while your application is being processed. Waiting to lock protects you if rates fall, because you can lock a lower rate later. There is no perfect timing — it depends on whether you think rates will move up or down and how much risk you are comfortable with. Most people lock as soon as they have a rate they are happy with, rather than gambling on future market movement.

Frequently Asked Questions

Why did my refinance rate quote come back higher than the rate I saw advertised?

Advertised rates are usually the best rate available that day for a borrower with excellent credit, significant home equity, and a large loan amount. Your actual rate depends on your credit score, equity, loan size, and the lender's margin. Rates also change throughout the day as market conditions shift, so a quote from this morning might be different from one this afternoon.

Can I negotiate my refinance rate with a lender?

You cannot negotiate the baseline rate set by the market, but you can negotiate the lender's margin — the points they add on top. Some lenders will lower their margin if you agree to a longer lock period, pay points upfront to buy down the rate, or move other accounts to them. Getting multiple quotes and mentioning competing offers sometimes prompts a lender to improve their terms.

What is the difference between points and my interest rate?

Your interest rate is the percentage you pay on the loan balance. Points are an upfront fee, where one point equals 1% of the loan amount. You can pay points at closing to buy down your rate — paying $3,000 in points on a $300,000 loan might lower your rate by 0.25 percentage points. This makes sense if you plan to stay in the home long enough to recoup the upfront cost through lower monthly payments.

Do I have to refinance with my current lender?

No. You can refinance with any lender, and shopping around often saves you money. Your current lender might offer you a better rate to keep your business, especially if you have been a good customer, but they have no obligation to match outside offers. Always compare at least three lenders before deciding.

How often can I refinance?

There is no legal limit on how many times you can refinance, but each refinance costs closing fees and requires a new appraisal and credit check. Most people refinance only when rates have dropped enough to offset closing costs, or when they want to change their loan term or switch from adjustable to fixed. Refinancing more than once every few years usually does not make financial sense.