To get preapproved, gather your financial records, ask several lenders to review your finances, and compare their letters and processes. A preapproval gives you a tentative borrowing range; it is not a guaranteed loan or a promise of a particular interest rate. A rate lock is a separate agreement with a lender, tied to a specific loan offer and time period. Once you have a property and are comparing formal offers, confirm the lock terms in writing and make sure the expected closing date fits inside the lock period.
This guidance is for U.S. homebuyers. Federal mortgage disclosures and lender practices can differ for some transactions, and the terms of a particular rate lock depend on the lender and the agreement.
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What preapproval does—and what it does not do
A mortgage preapproval is a lender’s tentative statement that it may lend you up to a specified amount, based on information available at that point. It helps you understand a plausible shopping range and show sellers that you have started the financing process. It is not final loan approval, a commitment to lend, or a guarantee that you will receive the amount shown.
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The lender still needs to process and approve the application for the actual purchase. It will verify information and consider the property and transaction details. If your financial circumstances, requested loan, or the property differ from the assumptions behind the preapproval, the final terms can change or the loan may not be approved.
Preapproval is also not a rate lock. A letter may say how much you might borrow without promising an interest rate. Treat the letter as an early financing checkpoint—not as the final price or terms of the mortgage. Ask the lender directly whether anything has been locked; do not infer that a rate is protected just because you have a preapproval letter.
Step 1: Prepare the records lenders may request
Ask each lender for its document list before submitting an application. Lenders and loan programs can request different records, but the CFPB checklist is a useful starting point.
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1Clear out junk files and repair common Windows errors2Fix the driver behind crashes, sound loss and screen glitches3Repair Windows errors before they cause bigger problems| Information to gather | Examples | Why it may be requested |
|---|---|---|
| Employment and income | Recent pay stubs; W-2 forms; signed federal tax returns for the prior two years; records of other income | To assess and verify income, including income that may not appear on a regular pay stub |
| Assets and funds for the purchase | Bank statements; documentation of the source of your down-payment funds | To review available funds and their source |
| Gift funds, if applicable | A signed statement from the person giving the funds may be required | To document a gift used toward the down payment |
| Identity details | Information the lender requests to identify you | To establish the applicant’s identity |
This is a baseline, not a promise that every lender will request exactly these items. Keep copies together and respond to follow-up requests promptly. If you expect to use overtime, a bonus, or another variable source of income, ask how the lender will document it; a lender may be unable to count income it cannot verify.
When you organize documents, label them clearly and make sure you know which lender needs which records. A lender may ask for additional items as it reviews your application, and requirements can differ between lenders. For down-payment funds, be prepared to explain their source and provide the documentation requested. If some of the money is a gift, ask what written statement the lender requires from the giver before relying on those funds in your purchase plan.
Keep your finances and loan request steady
While applying and shopping, avoid opening new credit accounts, taking on new debt, missing payments, or changing your down payment or requested loan amount without first discussing the likely effect with the lender. Credit score, verified income, loan amount, down payment, and other application details can affect underwriting and pricing. A change does not automatically mean denial, but it may require the lender to reassess the application or the rate.
Stability is especially useful once you have a lock. A lender may need to revisit the terms if an application detail changes, even if the change seems small to you. Before making a financial or purchase-plan change, describe it to the lender and ask whether it could affect qualification, the interest rate, points, or lock conditions. Keep the lender informed rather than assuming the original preapproval or rate still applies.
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Step 2: Request preapprovals from several lenders
Contact banks, credit unions, mortgage brokers, and online lenders. The CFPB recommends requesting preapprovals from at least three lenders. Comparing them can show what loans and prices each offers; one letter alone does not establish that its lender has the best terms for you.
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Ask each lender the same practical questions so you can compare both the financing and the process:
- What documents do you need, and how do you want them submitted?
- What loan amount and loan assumptions does the letter reflect?
- When does the letter expire, and how can it be refreshed?
- What could cause the eventual application to be denied, require more documentation, or cost more?
- When will you check credit, and what should I avoid changing while the application is under review?
Lenders typically check credit before issuing a preapproval. A preapproval letter also commonly has an expiration date. CFPB guidance says letters are typically valid for 30 to 60 days, but that is a general range, not a rule for every lender. Confirm the specific date on your letter and ask how to update it if your home search takes longer.
Use the same basic loan request when speaking with each lender so the results are easier to compare. If one lender’s letter assumes a different down payment or loan amount, note that difference rather than treating the maximum borrowing figure as directly comparable. Ask what the lender has reviewed already and what would still need to be verified after you have a property under contract.
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Do not compare only the maximum amount printed on each letter. A larger tentative limit is not necessarily a better fit for your budget, and the letters may rely on different assumptions. Check that each lender is evaluating a comparable loan request, and note the documentation still needed, the letter’s end date, and the lender’s expected next steps. You can then use the preapproval to guide your search without treating the maximum as a spending target.
Also compare whether the process seems workable for your timing. A lender’s document requests, response expectations, and next steps matter because the preapproval is only an early step toward a completed application. Ask how to contact the person handling your file and what to do if your search continues beyond the letter’s expiration. A refreshed letter can help keep your financing information current, but it is still tentative.
Step 3: Compare formal offers once you have a property
A preapproval helps you shop; it is not the final loan offer. After a seller accepts your offer and the property and transaction details are known, request Loan Estimates from the lenders you are considering. Compare like with like: use the same loan type, term, and down payment assumptions where possible. Differences in those assumptions can make two offers look more or less attractive than they really are.
| Compare | What to check | Why it matters |
|---|---|---|
| Loan structure | Loan type, term, and down payment used for the estimate | Offers are easier to compare when they describe the same financing |
| Pricing | Interest rate, points, lender credits, and other loan costs | A headline rate alone does not show all the costs or credits associated with the offer |
| Rate status | Whether the rate is locked, the lock period, and its expiration details | An estimate with a locked rate and one without a lock may expose you to different risks |
| Execution and flexibility | Documentation process, expected closing schedule, lock options, and extension terms | A low-cost offer may be harder to use if its process or lock period does not fit the transaction |
You are not committed to a lender simply because it provided a Loan Estimate. Use the estimates to compare actual offers and ask lenders to explain differences in rate, points, credits, costs, and lock status.
Make the comparison practical: look at the pricing together with the lock period and the closing schedule you expect. A rate alone does not tell you whether a particular offer fits your needs if it is not locked or if its lock is likely to expire before closing. Ask each lender to explain what is included in its estimate and which terms could still change under the lender’s conditions.
Check the rate-lock disclosure
If the lender issues a Loan Estimate before locking your rate, check the rate-lock statement at the top of page one. It should indicate whether the rate is locked. For a specified lock period, federal Regulation Z disclosure rules require the expiration date and time, including the time zone. Review those details rather than assuming the estimate’s date alone tells you when the lock ends.
The Loan Estimate does not spell out every detail of what an extension will cost. Ask the lender for the extension policy, fees, and conditions in writing. Keep the estimate and the lender’s written lock confirmation with your transaction records.
Read the lock indicator as a status check, not as a substitute for the lender’s full lock terms. If the estimate says the rate is not locked, ask how and when a lock can be requested. If it is locked, verify the exact rate and points, the period covered, the expiration time zone, and any circumstances that could permit a change. When any detail is unclear, request a written explanation before relying on the quoted terms.
Step 4: Decide whether and when to lock
A rate lock, sometimes called a lock-in, is an agreement to hold an interest rate for a specified period, subject to its conditions. Mortgage rates can change daily or even hourly. A lock generally protects the agreed rate through closing if you close within the specified period and the application has not changed in a way that affects the terms.
The CFPB’s rate-lock guidance, last reviewed May 2, 2023, describes a lock as protection from rate changes between the offer and closing as long as the borrower closes within the specified time frame and there are no changes to the application. It also cautions that rate-lock policies vary by lender. Use the specific agreement for your loan rather than assuming all lenders define the conditions or process in the same way.
Some lenders lock as part of issuing a Loan Estimate; others may wait until you say you intend to proceed. There is no universal best day or lock duration. CFPB guidance says lock periods are typically available for 30, 45, or 60 days, sometimes longer, but availability, terms, and costs vary by lender. Match the period to the transaction’s expected timeline and ask what happens if closing slips.
Get the lock terms confirmed before relying on them
When you choose an offer, ask the lender when and how to lock and confirm the following in the written terms or confirmation:
- The rate and any points tied to it.
- The lock’s start date and end date, plus the exact expiration time and time zone.
- The cost of the selected lock period and whether a shorter or longer period is available at a different cost.
- Whether the lender offers a float-down option if market rates fall, and the conditions and cost of using it.
- What changes to your application or the property could alter the rate, points, or other terms.
- What the lender charges and requires if closing is delayed past expiration.
Ask for a clear explanation of any lock condition you do not understand. A verbal discussion is not a substitute for checking the written terms that apply to your loan.
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There is no single lock length or locking date that is right for every borrower. Your expected closing schedule, the lender’s available periods, the cost of each period, and the possibility of delay all matter. Ask whether a longer lock is available and what it costs, but compare that cost with the expense and availability of an extension if closing runs late. Do not assume the lowest initial lock price is the least expensive choice if the timeline does not fit.
Understand the tradeoffs and the reasons a rate can change
Protection from increases versus the chance of a lower rate
Locking reduces the risk that a rising market rate will change the agreed rate during the covered period. The tradeoff is that you may not receive a lower market rate if rates fall. A float-down option may offer some flexibility, but whether it is available and how it works depend on the lender’s terms. Compare that option’s conditions and cost rather than assuming a lock automatically adjusts downward.
Expiration and closing delays
If the loan does not close before the lock expires, the lender’s policy determines what happens. You may need to pay for an extension, and the rate may be subject to the lender’s terms after expiration. Ask about the extension cost, how the fee is calculated, how much additional time it buys, and whether an extension is available at all. Build the expected closing schedule into your decision instead of choosing a lock period solely by its initial price.
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Ask what counts as a delay for the lender’s purposes and who should be contacted if the closing date changes. The expiration disclosure includes a time as well as a date, so a lock may end earlier than a borrower expects if they look only at the calendar day. Confirm whether the lender needs a request or particular information to consider an extension, and obtain its response in writing.
Application and property changes
A rate lock is not necessarily a promise that every quoted term remains fixed after a material change. CFPB examples of changes that can affect the rate include changing the loan type, loan amount, or down payment; a different appraisal result; a change in credit score; or being unable to document overtime, bonus, or other income. The exact effect depends on the lender’s terms and the circumstances. Before making a change, ask the lender how it could affect the lock. If the rate or points change, request an explanation of what changed and why.
These examples are reasons to communicate early, not reasons to assume a specific outcome. A lender’s answer depends on the facts and lock terms for the transaction. If a proposed change is unavoidable, tell the lender promptly and ask whether it requires updated documents, a revised Loan Estimate, or a new lock decision. Keep the explanation with your loan records so you can understand any change to the offer.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.A practical sequence from preapproval to closing
- Ask lenders for requirements. Get each lender’s current document list and application process.
- Gather and submit records. Organize income, tax, asset, down-payment, gift, and identity documents that apply to your situation.
- Request at least three preapprovals. Compare the assumptions, letter expiration dates, requested follow-up, and lender process.
- Keep the application stable. Discuss new debt, credit changes, income changes, or changes to the down payment and loan request before acting.
- After acceptance of an offer, request Loan Estimates. Compare the same loan type, term, and down payment, including rate, points, credits, and other loan costs.
- Choose an offer and confirm lock terms. Verify rate, points, exact expiration details, conditions, extension costs, and any float-down provision.
- Track the closing timeline and respond to requests. Keep in touch with the lender so documentation or scheduling issues are identified before the lock deadline.
What to do if the lock may expire before closing
Contact the lender as soon as you see a likely delay; do not wait until the stated expiration time. Ask whether an extension is available, its cost and duration, what information the lender needs, and how the rate will be treated if the loan cannot close within the lock period. Confirm the answer in writing. If the delay is related to a change in your application or the property, ask whether that change also affects the rate or points. The contract-specific terms and lender policy govern the available options.
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For help understanding the broader mortgage process, the CFPB’s Your Home Loan Toolkit: A Step By Step Guide includes worksheets, checklists, research tips, and conversation starters. The CFPB says a lender might offer a discount for completing homebuyer education, but do not assume a discount is guaranteed; ask the lender about its own policy.
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Frequently Asked Questions
Does a mortgage preapproval guarantee I’ll get the loan?
No. A preapproval is a tentative indication that a lender may lend up to a stated amount based on information available at the time. The lender still must process and approve the eventual application, verify information, and consider the property and transaction. Changed finances, loan details, or property information can change the terms or result in denial.
What documents do I need for mortgage preapproval?
Ask each lender for its list. A typical starting packet includes recent pay stubs, W-2s, signed federal tax returns for the prior two years, bank statements, records of other income, documentation showing the source of down-payment funds, and identity details. If you are using gift funds, the lender may require a signed statement from the giver. Requirements vary.
Does a preapproval lock my mortgage rate?
No. Preapproval and a rate lock are separate. A preapproval letter generally indicates a tentative borrowing amount, not a guaranteed interest rate. Confirm directly with the lender whether your rate is locked and check the Loan Estimate and written lock terms for the rate, expiration, and conditions.
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There is no universal best day. Ask when the lender allows you to lock, how long the available periods last, what each period costs, and whether the period covers your expected closing date with room for possible delays. Compare the protection against a rate increase with the possibility that you will not benefit if rates fall.
What happens if my rate lock expires before closing?
The lender’s policy and your lock agreement determine what happens. An extension may be available and may cost money; after expiration, the rate may be subject to the lender’s terms. Contact the lender as soon as a delay seems possible, ask about availability, fees, duration, and any effect on the rate, and get the answer in writing.
Can my rate or points change after I lock?
A lock is conditional. Changes to the loan type, loan amount, down payment, appraisal result, credit score, or ability to document variable income such as overtime or a bonus can affect terms. Ask the lender which changes matter for your specific lock and request an explanation if the rate or points change.
The Bottom Line
Get preapproved with several lenders, but treat each letter as tentative and keep your finances and loan request steady. Once you have a property and formal Loan Estimates, compare the same loan structure and verify whether the rate is locked. Before relying on a lock, confirm its rate, points, exact expiration date and time, conditions, extension costs, and any float-down terms in writing. Contact the lender early if the closing schedule changes.
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