How to Choose a Mortgage Lender

What matters most when picking a lender

The lender you choose affects your interest rate, your monthly payment, how long closing takes, and what fees you pay upfront. Different lenders compete on different things — some offer the lowest rates, some close faster, some work with borrowers who have lower credit scores or smaller down payments. You are not locked into the first lender you talk to, and comparing at least three is standard practice.

The core decision is whether to work with a bank, a credit union, a mortgage broker, or an online lender. Each has real trade-offs. Banks offer stability and often have local branches, but their rates are not always the lowest. Credit unions typically offer lower rates to members, but you have to join and meet their requirements. Mortgage brokers shop multiple lenders for you but take a commission. Online lenders move fast and have low overhead, but you handle everything by phone and email.

Key Takeaways

• Interest rate, origination fees, and closing timeline vary significantly between lenders, so getting quotes from at least three is worth the time.
• Banks, credit unions, brokers, and online lenders each have different strengths — the cheapest rate does not always come from the fastest or most convenient option.
• A loan estimate is a standardized document that shows your interest rate, monthly payment, and all fees; lenders must provide one within three business days of your application.
• Your credit score, debt-to-income ratio, and down payment size determine which lenders will work with you and what rate they will offer.
• Locking your interest rate protects you from rate increases during closing, but it expires if you do not close by the lock expiration date.

Banks versus credit unions versus brokers versus online lenders

Banks are the most familiar option. They hold your deposit accounts, have physical locations, and employ loan officers you can meet in person. Their rates are competitive but not always the lowest, because they have higher overhead. Approval timelines are typically two to four weeks. Banks are a solid choice if you value face-to-face service and already have a relationship with them, but do not assume they are cheaper just because they are familiar.

Credit unions typically offer lower rates to members than banks do, because they are nonprofit and return profits to members. You must join the credit union and meet membership requirements — some are open to anyone in a geographic area, others require you to work for a specific employer or belong to a specific organization. If you may have access to, a credit union is often worth exploring. Closing timelines are similar to banks, usually two to four weeks.

Mortgage brokers do not lend money themselves. Instead, they shop your application to multiple lenders and present you with options. Their fee comes from the lender or from you, depending on the agreement. Brokers are useful if you have an unusual situation — lower credit score, self-employment income, or a property type that mainstream lenders avoid — because they know which lenders will work with you. The downside is that you are paying a middleman, and closing can take longer because the broker coordinates between you and the lender.

Online lenders operate with minimal overhead and often close faster than traditional lenders, sometimes in two weeks or less. Their rates are competitive. The trade-off is that everything happens remotely — you upload documents, sign electronically, and communicate by email or phone. If you are comfortable with that process and want speed, online lenders are worth comparing. They are also more likely to work with borrowers who have lower credit scores or nontraditional income.

How to get and compare loan estimates

A loan estimate is a standardized three-page document that shows your interest rate, monthly payment, all fees, and closing costs. Lenders are required to provide one within three business days of your application, at no cost to you. You can request estimates from multiple lenders without committing to any of them.

When you compare estimates, look at the interest rate, the annual percentage rate (APR), the origination fee, and the total closing costs. The APR includes the interest rate plus certain fees, so it is a better number for comparing total cost than the interest rate alone. Do not focus only on the lowest rate — a lender with a slightly higher rate but lower fees might cost you less overall.

The loan estimate also shows your monthly principal and interest payment, property taxes, homeowners insurance, and mortgage insurance if applicable. This is the number that matters for your monthly budget. Ask each lender whether their estimate assumes a specific property tax rate or insurance cost, because those can change.

Keep in mind that the interest rate on your estimate is only locked if you formally request a rate lock and the lender confirms it in writing. Without a lock, the rate can change before closing. Most lenders offer locks for 30, 45, or 60 days — longer locks usually come with a higher rate.

Credit score, debt-to-income ratio, and down payment requirements

Your credit score determines which lenders will work with you and what rate they will offer. Conventional loans typically require a score of 620 or higher, though 740 and above gets you the best rates. FHA loans work with scores as low as 580. If your score is below 620, your options narrow — online lenders and some credit unions are more flexible than banks, but you will pay a higher rate.

Your debt-to-income ratio (DTI) is your total monthly debt payments divided by your gross monthly income. Most lenders want your DTI to be 43 percent or lower, though some go up to 50 percent. If your DTI is high because of student loans, car payments, or credit cards, paying down debt before applying will improve your options and your rate.

Your down payment size affects which lenders will work with you. Conventional loans typically require 3 to 20 percent down. FHA loans allow 3.5 percent down. VA loans and USDA loans allow zero down if you may have access to. Lenders with lower down payment requirements are often online lenders and credit unions, while some banks require 10 or 20 percent. If you have a small down payment, compare lenders that explicitly work with that amount rather than applying to banks that may decline you.

Interest rate locks and closing timelines

Once you choose a lender and are ready to move forward, you can request a rate lock. This freezes your interest rate for a set period — typically 30, 45, or 60 days — so that if rates rise before you close, your rate stays the same. If rates fall, you are locked in at the higher rate, so locking is a bet on where rates are headed. Most borrowers lock when they find a rate they are comfortable with, rather than waiting to see if rates drop.

Longer locks (60 days instead of 30) cost more because the lender is taking on more risk. Ask your lender what the rate difference is before you lock. If you are in a fast-moving market or your closing timeline is uncertain, a longer lock protects you but costs you in rate.

Closing timelines vary by lender. Online lenders often close in 10 to 14 days. Banks and credit unions typically take 20 to 30 days. Brokers can take longer because they coordinate between you and the lender. If you are in a competitive offer situation and speed matters, ask each lender upfront what their typical timeline is and whether they can expedite.

Questions to ask each lender before you decide

Beyond the loan estimate, ask each lender these questions to understand what you are actually getting into. First, ask whether the interest rate and fees on the estimate are locked or if they can change. Second, ask what documents they need from you and when — this affects how fast closing can happen. Third, ask whether they service the loan after closing (meaning you pay them every month) or whether they sell it to another company (meaning you might pay someone else). This does not change your rate, but it affects where your payments go.

Fourth, ask what happens if you need to delay closing — do you lose your rate lock, or can they extend it? Fifth, ask whether there are any fees if you pay off the loan early. Most mortgages do not have prepayment penalties, but some do. Finally, ask for the name and contact information of the loan officer or processor handling your file, so you know who to call with questions.

When to lock your rate and when to close

Rate locks expire if you do not close by the lock expiration date. Before you lock, make sure your lender can realistically close by that date. Ask them what could delay closing — appraisal issues, title problems, or missing documents are common. If your lender says they can close in 30 days but you are not sure your appraisal will come back on time, ask for a 45-day lock instead.

If your lock is about to expire and you are not ready to close, some lenders will extend it for a fee, usually 0.125 to 0.25 percent of the loan amount. Ask whether extension is possible before you lock, so you know the cost if you need it. If you are buying a home in a competitive market and your offer depends on closing by a specific date, make sure your lender can commit to that date in writing before you make the offer.

Frequently Asked Questions

Can I switch lenders after I have already applied?

Yes. You can withdraw your application from one lender and start fresh with another at any time before you lock your rate. After you lock, switching is more complicated because you lose the locked rate and have to start the process over. If you have already locked and want to switch, ask the new lender whether they can match or beat the rate you locked with your previous lender.

What is the difference between a mortgage broker and a loan officer at a bank?

A loan officer at a bank works for that bank and can only offer you loans from that bank. A mortgage broker shops multiple lenders and presents you with options. Brokers are useful if you have an unusual situation or want to compare many lenders at once. The downside is that brokers take a commission, which you pay either directly or through a higher rate.

Do I have to use the lender my real estate agent recommends?

No. Your real estate agent may recommend a lender they work with frequently, but you are not obligated to use them. Get estimates from at least three lenders, including the one your agent recommends, and choose based on rate, fees, and timeline. Your agent benefits from faster closings, so they may recommend a lender for speed rather than cost.

What if my lender denies my loan after I have already locked my rate?

Loan denials after a rate lock are rare if you were honest on your application, but they can happen if your credit score drops, you lose your job, or a major issue shows up in the appraisal or title search. If your lender denies you, you lose your rate lock and have to start over with a different lender. This is why it is important to avoid major credit changes or job changes between application and closing.

Should I pay points to lower my interest rate?

Points are an upfront fee you pay to lower your interest rate — typically one point costs 1 percent of the loan amount and lowers your rate by 0.25 percent. Whether it makes sense depends on how long you plan to stay in the home. If you are staying 10 years or more, paying points usually saves you money. If you might move or refinance in five years, it usually does not. Ask your lender to show you the break-even point for each option.