What moves your mortgage rate and what doesn't

Your mortgage rate depends on five things: the market rate that day, your credit score, the size of your down payment, the loan term you choose, and the type of loan (fixed, adjustable, or government-backed). You cannot move the market rate. You can move the other four, though each one costs you something or takes time you may not have.

The most direct lever is your credit score. A 20-point jump from 680 to 700 can lower your rate by 0.25 to 0.5 percentage points on a conventional loan. That translates to roughly $50 to $100 per month on a $300,000 mortgage. A larger down payment — moving from 10% to 20% — typically saves 0.25 to 0.75 percentage points because the lender's risk drops. Choosing a 15-year term instead of 30 years usually means a lower rate, though your monthly payment rises sharply.

What does not move your rate: your income, your job title, how long you have been at your job, or how much you have saved beyond the down payment. Lenders care about whether you can repay; they do not reward virtue.

Key Takeaways

  • Raising your credit score by 50 points or more before you apply can save 0.25 to 0.75 percentage points on your rate, which amounts to tens of thousands of dollars over the life of the loan.
  • Increasing your down payment from 10% to 20% removes the requirement for mortgage insurance and typically lowers your rate by 0.25 to 0.75 percentage points.
  • Paying down existing debt before you apply improves your debt-to-income ratio, which many lenders use to set your rate tier.
  • Shopping with at least three lenders and comparing their Loan Estimates side by side can reveal rate differences of 0.25 to 0.5 percentage points for the same loan.
  • Locking your rate at the right moment requires watching the market, but most people benefit more from improving their financial profile than from timing.

Improve your credit score before you apply

Your credit score is the fastest lever you control. Most mortgage lenders use your FICO score, and they typically pull all three bureaus (Equifax, Experian, TransUnion) to get the middle score. If your score is below 740, raising it is worth the delay.

Start by pulling your credit report from annualcreditreport.com, the only free source mandated by federal law. Look for errors — accounts you do not recognize, late payments that were actually on time, or duplicate entries. Dispute errors directly with the bureau that reported them; the bureau must investigate within 30 days. Correcting a false late payment can jump your score 50 to 100 points.

If your report is accurate, focus on your credit utilization ratio — the percentage of your available credit you are using. If you have $10,000 in available credit across all cards and you are carrying $6,000 in balances, your utilization is 60%. Lenders prefer to see it below 30%. Paying down balances faster than your application date raises your score; opening new cards does not. Paying off a card entirely and closing it can actually lower your score temporarily because it reduces your available credit, so leave paid-off cards open.

Late payments hurt more than high balances. If you have a recent late payment (within the last two years), focus on making every payment on time from now on. Your score will climb steadily. If you have no recent late payments and your utilization is already below 30%, your score is unlikely to move much in the next few months, and waiting may cost you more in rate changes than you gain.

Increase your down payment if you can

A down payment of 20% or more eliminates the requirement for private mortgage insurance (PMI), which typically costs 0.5 to 1.5 percentage points annually. Removing PMI alone can lower your effective rate by that amount. Lenders also offer better rates to borrowers with larger down payments because the lender's loss exposure shrinks.

If you are currently planning a 10% down payment and can reach 15%, that move is worth making. The jump from 15% to 20% saves less in rate reduction but still removes PMI entirely. Beyond 20%, rate improvements flatten out — a 25% down payment does not save you much more than 20%.

The trade-off is opportunity cost. Money sitting in a savings account earning 4% to 5% in a high-yield savings account is money not invested in the stock market, which has historically returned 10% annually over long periods. If you are three months away from closing and you can move money from a brokerage account to your down payment without triggering capital gains taxes, that is different from delaying your purchase by a year to save an extra 5%. Run the math for your situation, not the general case.

Pay down debt to improve your debt-to-income ratio

Your debt-to-income ratio (DTI) is the total of all your monthly debt payments divided by your gross monthly income. Most lenders cap this at 43% to 50%, depending on the loan type and your credit score. A lower DTI can unlock better rate tiers.

If you are carrying $800 in car payments, $200 in student loans, and $300 in credit card minimums, that is $1,300 in monthly debt. On a $5,000 gross monthly income, your DTI is 26% before the mortgage. A $2,000 monthly mortgage payment would push you to 66%, which exceeds most lenders' limits. Paying off the car loan before you apply drops your debt to $500, bringing your DTI with the mortgage to 50% — within range for many programs.

Paying down credit card balances helps twice: it lowers your credit utilization (which raises your score) and it lowers your monthly minimum payments (which lowers your DTI). Paying off an installment loan like a car or student loan removes that payment entirely from the calculation, which is more powerful than paying down revolving debt.

Shop with multiple lenders and compare Loan Estimates

Rate shopping is the fastest way to find a lower rate without changing your financial profile. Different lenders price risk differently, and the same borrower can receive rates that differ by 0.25 to 0.5 percentage points across three lenders.

Contact at least three lenders: a large bank (Wells Fargo, Chase, Bank of America), a mortgage broker or credit union, and a direct online lender (Rocket Mortgage, Better.com, LoanDepot). Each must provide a Loan Estimate within three business days of your application. The Loan Estimate is a standardized form that shows the interest rate, the annual percentage rate (APR), the loan amount, the term, and all fees.

Compare the APR, not the interest rate. The APR includes the interest rate plus lender fees, so it reflects the true cost. A lender quoting 6.5% interest but charging $3,000 in origination fees may have a higher APR than a lender quoting 6.6% with $1,000 in fees. The Loan Estimate also shows discount points — fees you pay upfront to lower your rate. If one lender offers 6.25% with 1 point ($3,000 on a $300,000 loan) and another offers 6.5% with no points, calculate which saves you money over your expected holding period.

Rate shopping does not lock you in. You can request a Loan Estimate from five lenders and choose the best one. Multiple inquiries from mortgage lenders within 45 days count as a single inquiry on your credit report, so shop quickly and all at once.

Understand rate locks and float-downs

Once you choose a lender, you can lock your rate for a set period — typically 30, 45, or 60 days. Locking means the lender guarantees that rate for your loan, even if market rates rise. If rates fall, you are stuck unless your lender offers a float-down.

A float-down allows you to lock a lower rate if the market rate drops before your closing date. Some lenders offer one free float-down; others charge a fee (typically $250 to $500). Ask your lender whether they offer float-downs and under what conditions before you lock.

Most borrowers should lock as soon as they have a Loan Estimate they are comfortable with. Timing the market is difficult, and the cost of rates rising while you are shopping is usually higher than the benefit of waiting for a small drop. If you are closing in 30 days and rates have been stable for a week, locking immediately removes uncertainty. If you are closing in 60 days and rates have been volatile, a 60-day lock with a float-down option gives you flexibility.

Consider loan type and term trade-offs

A 15-year fixed mortgage carries a lower rate than a 30-year fixed mortgage — typically 0.25 to 0.5 percentage points lower. But your monthly payment is roughly 50% higher because you are repaying the loan in half the time. On a $300,000 loan, a 30-year mortgage at 6.5% costs about $1,896 per month; a 15-year mortgage at 6.0% costs about $3,059 per month.

An adjustable-rate mortgage (ARM) starts with a lower rate than a fixed mortgage — often 0.5 to 1.0 percentage points lower — but the rate adjusts after an initial period (typically 3, 5, 7, or 10 years). After that, your payment can rise sharply. ARMs make sense only if you plan to sell or refinance before the rate adjusts, or if you can afford the payment at the maximum possible rate.

Government-backed loans (FHA, VA, USDA) often carry slightly higher rates than conventional loans, but they require smaller down payments or no down payment at all. If you cannot reach a 20% down payment, an FHA loan at a slightly higher rate may be cheaper overall than a conventional loan with PMI.

Frequently Asked Questions

How much does my credit score need to improve to see a rate change?

Most lenders use credit score bands (620–639, 640–659, 660–679, and so on) to set rates. Moving from one band to the next — roughly a 20-point jump — can lower your rate by 0.25 percentage points. A 50-point improvement often moves you two bands and saves 0.5 percentage points or more.

Should I wait for rates to drop before I apply?

Timing the market is difficult and rarely worth the delay. If you need a home now, focus on improving your financial profile instead. If rates do drop after you lock, ask your lender about float-down options. If you are not ready to buy for six months or more, waiting to improve your credit score is usually more valuable than guessing whether rates will fall.

Can I negotiate my mortgage rate with a lender?

Rates are not typically negotiable, but lender fees are. If one lender quotes a lower rate but higher fees, ask whether they will reduce the origination fee or discount points to match a competitor's offer. Some lenders will; others will not. Shopping multiple lenders is more effective than negotiating with one.

What is the difference between APR and interest rate?

The interest rate is what you pay on the loan balance. The APR includes the interest rate plus lender fees, expressed as an annual percentage. APR is the better number to compare across lenders because it shows the true cost. Two loans with the same interest rate but different fees will have different APRs.

How long does it take to see a credit score improvement?

Paying down credit card balances can raise your score within 30 days, because credit utilization updates monthly. Paying off a late payment takes longer — your score will climb steadily over 12 to 24 months as the late payment ages. If you have time before you need to buy, starting now is worth it.