The fastest way to lower your rate is to shop multiple lenders before you commit

The lowest mortgage rate available to you depends on three things you control and several you do not. You control which lenders you contact, how much you put down, and how long you lock your rate. You do not control the broader market — the Federal Reserve's decisions, inflation, and bond yields set the floor that all lenders work from. But within that floor, lenders compete, and their offers to you can differ by 0.5% or more. Shopping five to seven lenders takes a few hours and can save you tens of thousands of dollars over the life of the loan.

Start by getting a Loan Estimate from at least three lenders — your bank, a mortgage broker, and an online lender. The Loan Estimate is a standardized form that shows the interest rate, the annual percentage rate (APR), the loan amount, and all fees. It is free to request, and lenders are required to send it within three business days. Compare the APR, not just the interest rate, because APR includes fees and gives you the true cost of borrowing.

Key Takeaways

  • Request Loan Estimates from at least three to five lenders and compare the APR on each, since APR includes both the interest rate and fees.
  • A larger down payment — 20% or more — removes private mortgage insurance and often qualifies you for a lower rate tier.
  • A shorter lock period (15 days instead of 45) can lower your rate slightly, but you must be ready to close quickly or you lose the rate.
  • Paying points (prepaid interest) lowers your rate but costs cash upfront; this trade-off makes sense only if you plan to keep the mortgage for at least five to seven years.
  • Your credit score, debt-to-income ratio, and the property type all affect the rate you are offered, so improving your credit before you apply can move you into a better rate tier.

How your down payment size affects your rate

Lenders offer lower rates to borrowers who put down 20% or more because the lender's risk drops. Below 20%, you pay private mortgage insurance (PMI), which protects the lender if you default. That insurance costs you 0.5% to 1% of the loan amount per year, and it pushes your effective rate higher. A lender might offer you 6.5% with 10% down (plus PMI) but 6.1% with 20% down (no PMI). The 20% down option is cheaper even though the stated rate is lower.

If you have saved 15% to 19%, you are in a middle zone. Some lenders will still require PMI, but others offer lender-paid mortgage insurance (LPMI), where the lender covers the insurance cost in exchange for a slightly higher interest rate. LPMI makes sense if you plan to refinance in five to seven years, because you avoid the monthly PMI payment. If you plan to stay in the home for 15 years, the cumulative PMI cost with a lower rate may be cheaper than LPMI.

Rate locks and how long to hold them

When a lender quotes you a rate, that rate is only good for a set number of days — typically 15, 30, 45, or 60 days. This is your lock period. If you close within that window, you get the quoted rate. If you close after, the lender can charge you a higher rate or let you walk away.

Shorter locks are cheaper. A 15-day lock might be 0.125% lower than a 45-day lock because the lender takes on less risk that rates will rise before closing. But a 15-day lock only works if you can close in 15 days — if your appraisal takes longer or your underwriting stalls, you lose the rate. A 45-day lock gives you breathing room and is standard for most borrowers. A 60-day lock costs more but is worth it if you are buying a home that needs an appraisal or if you are waiting on a job transfer to close.

Paying points to lower your rate

A point is 1% of your loan amount, paid upfront at closing. One point typically lowers your interest rate by 0.25% to 0.5%, depending on the lender and the market. If you are borrowing $300,000, one point costs $3,000 and might lower your rate from 6.5% to 6.1%. Over 30 years, that 0.4% savings is roughly $200 per month, so you break even in 15 months and save money after that.

Points make sense only if you plan to stay in the home long enough to recoup the upfront cost. If you think you will sell or refinance in five years, paying points is usually a loss. If you plan to stay 10 years or longer, points often pay for themselves. Ask your lender to show you the break-even point in writing — the month when your monthly savings equal the upfront cost.

Credit score and debt-to-income ratio matter

Lenders sort borrowers into rate tiers based on credit score and debt-to-income ratio (DTI). DTI is your total monthly debt payments divided by your gross monthly income. A borrower with a 750 credit score and a 35% DTI might get 6.2%, while a borrower with a 680 score and a 45% DTI might get 6.8% for the same loan. The difference is real and can cost you $100,000 or more over 30 years.

If your credit score is below 700 or your DTI is above 43%, you have time to improve before you apply. Paying down credit card balances lowers your DTI and can raise your score by 20 to 50 points in two to three months. Disputing errors on your credit report can raise your score faster. Even a small improvement can move you into a better rate tier and save you thousands.

Comparing lenders: what to look for beyond the rate

The interest rate is not the only cost. Compare the origination fee (what the lender charges to process the loan), the appraisal fee, the title insurance, and the underwriting fee. These vary widely. One lender might charge $1,200 in fees while another charges $2,500 for the same rate. The Loan Estimate shows all of these on page one, so you can add them up and compare the total cost, not just the rate.

Also ask about the lender's underwriting timeline. Some lenders close in 21 days; others take 45 days. If you are in a competitive market and need to close fast, a slower lender might cost you the home. Ask how many underwriters they have and whether they are currently backed up. A lender with a low rate but a 60-day timeline might not be the best choice if you need to close in 30 days.

When to refinance instead of shopping for a new mortgage

If you already have a mortgage and rates have dropped, refinancing — replacing your current loan with a new one at a lower rate — can save you money. But refinancing has closing costs (usually 2% to 5% of the loan amount), so it only makes sense if the monthly savings will cover those costs within a reasonable time. If your current rate is 6.5% and you can refinance at 5.8%, and your closing costs are $6,000, you break even in about three years. If you plan to stay in the home longer than that, refinancing is worth exploring.

Refinancing also resets your loan term. If you have paid for five years on a 30-year mortgage and you refinance into a new 30-year loan, you are back to 30 years of payments. A 15-year refinance costs more per month but saves you interest and builds equity faster. A cash-out refinance lets you borrow against your home's equity to pay for repairs or other expenses, but it increases your loan balance and your monthly payment.

Frequently Asked Questions

Does shopping multiple lenders hurt my credit score?

Multiple mortgage inquiries within 14 to 45 days count as a single inquiry for credit scoring purposes, so shopping around does not hurt your score. Hard inquiries do lower your score by a few points, but the effect is temporary and disappears within a few months. The savings from shopping far outweigh the temporary score dip.

Can I negotiate the interest rate after I get a Loan Estimate?

Yes. If you have a better offer from another lender, you can ask your lender to match it or beat it. Lenders have some flexibility on rate, especially if you are a strong borrower or if you are willing to pay more in points or fees. Always ask — the worst they can say is no.

What is the difference between a fixed rate and an adjustable rate?

A fixed rate stays the same for the entire loan term (usually 15 or 30 years). An adjustable rate (ARM) starts lower but increases after a set period, usually three to seven years. ARMs are riskier because your payment can jump hundreds of dollars per month when the rate adjusts. Fixed rates are more common and predictable, especially for first-time buyers.

Should I lock my rate now or wait for rates to drop?

No one can predict whether rates will rise or fall. If you are ready to buy and rates are acceptable to you, locking now removes the uncertainty. If you wait for rates to drop and they rise instead, you lose money. Lock when you are ready to move forward, not when you think the market will move in your favor.

How do I know if my rate is competitive?

Compare your Loan Estimate to rates from at least three other lenders. Check mortgage rate websites like Bankrate or LendingTree to see what rates are being offered in your state for your loan type. Your rate should be within 0.25% of the market average for your credit profile. If it is higher, ask your lender why or shop elsewhere.