# How Mortgage Rates Work: What Determines Your Rate and How to Get the Best One By Opendoor Editorial Team | 2026-04-28 # How Mortgage Rates Work: What Determines Your Rate and How to Get the Best One Your mortgage rate isn't random — it's shaped by a combination of broad economic forces and factors specific to you. Understanding how mortgage rates are determined helps you time your purchase, strengthen your financial position, and avoid paying more than you should. Whether you're buying your first home or your fourth, the mechanics behind your rate matter because even a small difference compounds into tens of thousands of dollars over the life of your loan. Here's exactly how rates are set and what you can actually control. ## What Is a Mortgage Rate? A mortgage rate is the interest a lender charges you on your home loan, expressed as a percentage of the loan amount per year. It's the cost of borrowing money to buy a home, and it directly determines your monthly payment and the total amount you'll pay over the life of the loan. A quick example: on a $400,000 loan at 6.5%, you'd pay roughly $26,000 in interest in the first year alone. Over 30 years, interest can exceed the original loan amount. There are two main types of mortgage rates: - **Fixed-rate:** Your rate stays the same for the entire loan term — no surprises, predictable payments. - **Adjustable-rate (ARM):** Your rate is fixed for an initial period (commonly 5 or 7 years), then resets periodically based on a market index. ARMs often start lower but carry the risk of future increases. One important distinction to understand upfront: your mortgage rate is not the same as your APR. Your rate reflects interest only. Your APR — annual percentage rate — folds in lender fees like origination charges and discount points, giving you a more complete picture of your true borrowing cost. We'll dig deeper into this below, because the rate-versus-APR gap is where many borrowers unknowingly leave money on the table. ## What Determines Mortgage Rates? The Big Picture So how are mortgage rates determined at a market level? Three macroeconomic forces set the baseline that every lender works from. ### The Federal Reserve The Fed sets the federal funds rate — the rate banks charge each other for overnight loans. Mortgage rates don't follow the Fed directly, but Fed policy shapes the broader economic conditions that influence all lending. When the Fed raises rates, short-term borrowing costs rise, and mortgage rates often follow — but not always, and not by the same amount. When the Fed cuts rates, the same logic works in reverse. The relationship is influential but indirect, which is why mortgage rates sometimes move in the opposite direction of a Fed announcement. The more direct benchmark for fixed mortgage rates? The 10-year Treasury yield. ### The 10-Year Treasury Bond Thirty-year fixed mortgage rates typically run about 1.5% to 2.5% above the 10-year Treasury yield. Why? Mortgage lenders need a risk premium above the "safe" return of a government bond to compensate for the added risk of lending to individual homebuyers over long time horizons. When Treasury yields rise (meaning bond prices fall), mortgage rates tend to rise with them. When yields drop, mortgage rates usually follow. This is why watching Treasury yields often tells you more about mortgage rate direction than following Fed meetings alone. ### Mortgage-Backed Securities (MBS) Most home loans don't stay with the lender that originated them. They're packaged into mortgage-backed securities and sold to investors on secondary markets. Government-sponsored enterprises like Fannie Mae and Freddie Mac buy and guarantee many of these loans, creating a liquid market for mortgage debt. When investor demand for MBS is high, lenders can sell their loans at favorable prices and pass that benefit along as lower rates. When demand drops — due to inflation concerns, competing investment options, or market uncertainty — rates rise. MBS trading is the most direct, day-to-day driver of the mortgage rates you see quoted. ## What Affects Your Personal Mortgage Rate? While market forces set the baseline, several factors specific to you determine the exact rate a lender offers. This is why mortgage rates are different for everyone, even on the same day with the same lender. | Factor | Impact | How to Improve | | --- | --- | --- | | Credit score | Major | Pay down debt, fix errors on your report | | Down payment / LTV | Major | Save more, aim for 20%+ down | | Loan type | Major | Compare FHA, conventional, VA options | | Loan term | Moderate | 15-year terms carry lower rates than 30-year | | Loan amount | Moderate | Jumbo loans typically cost more | | Property type | Minor | Primary residences get the best rates | | Occupancy | Minor | Investment properties carry higher rates | | Lender fees | Significant | Shop multiple lenders; compare APR, not just rate | Your credit score and down payment carry the most weight. A borrower with a 760 credit score and 25% down will almost always receive a meaningfully better rate than someone with a 660 score and 5% down — often by half a percentage point or more. ## How to Get a Lower Mortgage Rate You can't control Treasury yields or Fed policy, but you can control a lot. Here are five strategies that directly affect what affects your mortgage rate at the individual level. - **Improve your credit score.** Going from 679 to 720 can drop your rate by 0.25% to 0.75%. Check your credit reports for errors, pay down revolving balances, and avoid opening new accounts in the months before applying. Even small score improvements can move you into a better pricing tier. - **Put more down.** A higher down payment means a lower loan-to-value ratio (LTV), which lenders reward with better pricing. Crossing the 20% threshold also eliminates private mortgage insurance (PMI), reducing your total monthly cost further. - **Choose a shorter loan term.** Fifteen-year mortgage rates are typically 0.5% to 0.75% lower than 30-year rates. Your monthly payment will be higher, but you'll pay dramatically less in total interest. - **Buy mortgage points.** You can pay upfront to lower your rate — one point costs 1% of your loan amount and typically reduces your rate by about 0.25%. The break-even period is usually 5 to 7 years, so this makes sense if you plan to stay in the home long-term. - **Shop lenders aggressively.** This is the highest-impact action most buyers skip. Rate differences between lenders on the same day for the same borrower can range from 0.5% to 1.0%. Get quotes from at least three to five lenders and compare their APRs, not just their advertised rates. The [CFPB's rate shopping guide](https://www.consumerfinance.gov/) confirms that shopping around is one of the most effective ways to save. For more on the full mortgage process, see our guide on [how to get a mortgage](/articles/how-to-get-a-mortgage). ## Mortgage Rate vs. APR — Which Matters More? This is one of the most misunderstood topics in home lending, and understanding it can save you thousands. - **Rate:** The interest you pay on the loan itself — nothing else. - **APR:** The rate plus origination fees, discount points, and other lender charges, annualized into a single percentage for comparison purposes. When you're comparing lenders, use APR — it captures the true cost of borrowing. Here's why this matters: Lender A offers 6.50% with $3,000 in fees, producing an APR of 6.78%. Lender B offers 6.65% with $0 in lender fees, producing an APR of 6.65%. Despite the higher stated rate, Lender B is the cheaper loan. This is exactly how Opendoor Home Loans is structured. With **$0 lender fees**, the rate and the APR are much closer together because there are no origination charges, underwriting fees, or processing costs layered in. That transparency makes comparison straightforward and often reveals that Opendoor's total cost is lower than competitors who advertise a flashier rate but load it with fees. For a full breakdown, read [why Opendoor mortgage rates are lower](/articles/why-mortgage-rates-at-opendoor-are-so-much-lower). ## What Is a Good Mortgage Rate? "Good" is always relative to current market conditions, your credit profile, your loan type, and your term. There's no single number that defines a good rate across all time periods. In the 2024–2026 environment, rates in the 6% to 7% range are the market reality for a conventional 30-year fixed mortgage. That may feel high if you're comparing to the anomalous 2.5% to 3.5% rates of 2020–2022, but historically it's normal — the pre-2008 long-term average hovered around 6% to 7%. A practical rule: if your offered rate is within 0.25% of the best available rate for your credit tier, you have a good rate. The best way to know where you stand is to get quotes from three to five lenders on the same day and compare APRs side by side. Getting [pre-approved](/articles/mortgage-preapproval) is the fastest way to see real, personalized numbers. ## Rate Lock — When and How Long A rate lock is a guarantee from your lender that your quoted rate won't change for a set period, protecting you from market fluctuations between offer acceptance and closing. - **Typical lock periods:** 30, 45, or 60 days. - **When to lock:** Once you have an accepted offer and are confident in your lender choice. Locking too early (before you've found a home) can lead to expiration; locking too late exposes you to rate increases. - **Risk of not locking:** Rates could rise before your closing date, increasing your monthly payment and total loan cost. - **Float-down options:** Some lenders offer a one-time rate reduction if market rates fall after you lock. Ask about this — it's not always advertised. ## Calculating the Impact of Your Rate Rate differences look small on paper but compound enormously over a 30-year loan. Here's what different rates mean on a $400,000 loan: | Rate | Monthly P&I | Total Interest Paid | | --- | --- | --- | | 5.5% | $2,271 | $417,560 | | 6.0% | $2,398 | $463,280 | | 6.5% | $2,528 | $510,080 | | 7.0% | $2,661 | $557,960 | | 7.5% | $2,797 | $606,920 | A 1% rate difference on this loan size equals roughly $133 more per month and nearly $48,000 more in total interest over 30 years. That's real money — and it's why every fraction of a percentage point you can save through better credit, a larger down payment, or smarter lender shopping is worth the effort. Use the [Opendoor Mortgage Calculator](https://www.opendoor.com/mortgage-calculator) to see the impact of different rates on your specific loan amount and term. **See How Rate Affects Your Payment →** ## Will Mortgage Rates Go Down? This is the question every buyer asks, and the honest answer is: no one knows with certainty. Mortgage rates are influenced by inflation trends, Federal Reserve policy, Treasury demand, global economic conditions, and investor appetite for mortgage-backed securities. Forecasters from Freddie Mac, the Mortgage Bankers Association, and major banks publish projections, but those projections frequently miss — sometimes by a wide margin. What we do know: if inflation continues to moderate and the Fed follows through on expected rate cuts, there's reason to believe mortgage rates could ease over time. But "over time" could mean months or years, and any number of economic shocks could reverse the trend. The practical advice: if you find a home you can afford at today's rates, buying now gives you the asset and the option to refinance later if rates fall. Waiting for a rate that may or may not arrive means competing with every other buyer who waited — likely in a more competitive market with higher home prices. As the saying goes: marry the house, date the rate. Focus on what you can control — your credit score, your down payment, your [loan type](/articles/types-of-mortgage-loans), and your choice of lender. **Frequently asked questions** ## Disclosure Opendoor Home Loans LLC is not available in all markets. Products, programs, rates, and terms are subject to change without notice. This material is provided for informational purposes only and is not an offer or guarantee of credit. Contact Opendoor Home Loans for current availability. --- *Originally published at [https://www.opendoor.com/articles/how-mortgage-rates-work](https://www.opendoor.com/articles/how-mortgage-rates-work)*