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How Long Does a Mortgage Rate Lock Last, and What Happens When It Expires?

Mortgage rate locks commonly last 30, 45, or 60 days, but your agreement sets the real deadline. Learn how to check the date and what to ask if closing may be delayed.
From TheFinanceBase Team9 min to read

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A mortgage rate lock commonly lasts 30, 45, or 60 days, and sometimes longer. Your own expiration date—not the usual range—is the one that matters: find it in the rate-lock agreement or on page one of your Loan Estimate. If closing happens after that date, the lender may offer an extension or require a new lock arrangement; fees and terms depend on the lender and your agreement.

How long a mortgage rate lock lasts

The Consumer Financial Protection Bureau (CFPB) says mortgage rate locks are typically available for 30, 45, or 60 days, and sometimes longer. Those are common periods, not a guarantee of how long any particular lock lasts. Your lender’s written documents set the duration and expiration date. CFPB guidance on rate locks was last reviewed May 2, 2023.

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Check page one of your Loan Estimate to see whether the rate is locked and, if so, until when. Review any separate lock agreement as well. Do not assume that receiving a Loan Estimate means your rate is locked: lenders may lock at different points, and the paperwork should make the status clear. If the documents do not give a specific expiration date, ask the lender to confirm it in writing.

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The date in your own paperwork is more useful than a general estimate of how long a mortgage lock “usually” lasts. The 30-, 45-, and 60-day periods describe common options, not a deadline that automatically applies to every borrower. If you are planning a purchase or refinancing, compare the expected closing timeline with the written expiration date and clarify what happens if the timeline changes. A lock agreement and a Loan Estimate are related, but they are not interchangeable: the Loan Estimate may say whether the rate is locked, while the separate agreement may contain more of the specific terms.

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What a rate lock protects—and what it does not

A rate lock generally protects the quoted interest rate for the agreed period, provided you close before it expires and the relevant details of your application remain stable. The lock is conditional, not a promise that every loan term will remain unchanged regardless of what happens during underwriting.

Changes to the loan amount, down payment, credit score, appraisal, or verified income can affect the terms. For example, the CFPB says an appraisal below the sale price or an inability to verify income can affect the rate. If your rate or points change even though you believe the lock is still active, ask the lender to identify the specific reason and explain how the application or agreement supports the change. See the CFPB’s guidance on rate or points changes before closing.

This condition matters because a rate lock does not freeze every fact about the transaction. If a loan amount changes, the down payment changes, the lender receives different credit information, or underwriting cannot verify an important detail, ask whether the change affects the lock or another part of the offer. Do not assume that a changed term necessarily means the lender violated the lock; ask for the reason, the relevant application detail, and the part of the agreement that applies. Conversely, if the lender says a rate or points changed while the original terms and lock period still apply, request a clear written explanation.

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A rate lock is also not final loan approval. A Loan Estimate is an early disclosure of estimated loan terms and costs; receiving one does not mean the lender has approved or denied your application. The CFPB explains the Loan Estimate and related process in its Loan Estimate guide. Keep the distinction clear: the Loan Estimate helps you understand and compare an offer, the lock concerns the quoted rate for a defined period and conditions, and underwriting still determines whether the loan can be approved.

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What happens when the lock expires

If you have not closed by the expiration date, the original lock may no longer protect the quoted rate. You may need to ask for an extension or discuss a new lock. There is no single outcome that applies to every lender: the rate available after expiration, whether an extension is offered, its cost, and the steps to request it depend on the lender’s policy and your agreement. Do not assume that a lock extends automatically.

An extension may come with a fee. The CFPB advises borrowers to ask about the extension policy and cost, including when the delay is related to lender processing. Its guidance does not establish a standard fee, required extension, or universal remedy. A Loan Estimate may show whether the rate is locked, but it does not show the specific cost of extending the lock or the cost of different lock periods. Ask the lender for those figures directly.

There is no reliable universal dollar amount or percentage to use when budgeting for an extension. The sources do not establish one standard charge, and a lender’s answer may depend on its own policy and your agreement. Ask for the actual cost for your loan, how it is calculated, when it must be paid or disclosed, and whether the fee changes with the length of the extension. Ask as well whether the lender offers the extension at all and whether it can refuse the request.

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If the lender will not extend the lock, ask what rate and points would apply under a new arrangement and whether a new lock is available. Get the alternatives, costs, and deadline for choosing in writing before the existing lock expires, where possible. Expiration is a point to get a decision from the lender—not a reason to assume that the original rate remains protected or that a particular replacement rate automatically applies.

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What to do if closing may miss the deadline

  1. Find the date and confirm the status. Check page one of your Loan Estimate and any separate lock agreement for the locked status and expiration date. If either is unclear, ask your loan officer or lender to confirm both in writing. Do not substitute a date you remember from a conversation or a typical lock period for the date in your documents.
  2. Contact the lender as soon as a delay looks possible. Do not wait until after expiration. Ask whether an extension is available, when you must request it, how its cost is calculated, and whether a longer lock is still an option. A prompt conversation gives you a chance to understand the choices and any request deadline before the existing period ends.
  3. Ask what happens if an extension is unavailable or refused. Confirm the rate and points that would apply after expiration, whether you can enter a new lock, and any decision deadline or other conditions. Ask whether a different lock period is available and what it costs, rather than assuming that the lender will simply continue the existing terms.
  4. Request written terms and review updated disclosures. Ask the lender to document the extension or new arrangement and any fee. Regulation Z’s official commentary discusses revised disclosures reflecting a new extension fee in qualifying circumstances; that does not mean a specific fee is mandatory or that lenders all charge the same amount. Regulation Z, § 1026.38 commentary.
  5. Question unexpected changes. If the quoted rate or points change while you believe the lock remains in effect, ask the lender to explain the reason and connect it to the application details or lock terms. The CFPB identifies application changes such as a lower-than-sale-price appraisal or an inability to verify income as possible factors.

When you contact the lender, make the question specific: “My paperwork says the lock expires on [date], and closing may occur after that. What options are available, what do they cost, and by when must I choose?” Ask the lender to confirm the answer and any revised terms in writing. The point is not to assume that a delay is the borrower’s fault or the lender’s fault; it is to find out what the written agreement and current lender policy allow in this situation.

Questions to ask your lender

  • Is my rate locked, and what is the exact expiration date?
  • Can I extend the lock if closing is delayed? What is the request deadline, and can the lender decline?
  • How is an extension fee calculated, and what would my fee be?
  • If the lock expires without an extension, what rate and points would apply, and can I lock again?
  • Could a change in my loan amount, down payment, credit, appraisal, or verified income change the locked terms?
  • What would a different lock period cost, and does the Loan Estimate show that cost?
  • Can you provide the extension options, rate, points, and fee in writing before the current lock expires?

Ask for answers and any revised terms in writing. For a comparison between lenders, review their Loan Estimates alongside the lock duration, extension policy and cost, and terms that could apply after expiration; the headline interest rate alone does not show the full difference. The CFPB recommends comparing Loan Estimates and asking lenders about lock periods and extension fees in its guide to comparing loan offers.

When comparing, use the same questions with each lender: how long the quoted lock lasts, the expiration date, the cost of the requested lock period, the availability and price of an extension, and the rate and points that could apply after expiration. Also ask what application changes could alter the locked terms. These are real points of difference, but the CFPB materials do not give a universal price for a longer lock or an extension. Ask each lender for its own figures and process rather than treating one lender’s answer as a marketwide standard.

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A Loan Estimate alone will not answer every lock-cost question. It can show whether the rate is locked and until when, but it does not show the specific cost to extend or the cost of different lock periods. If you are weighing offers, request those details directly and compare the written answers alongside the estimates. That gives you a more complete picture than comparing only the initial interest rate.

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Do not confuse the lock period with other loan deadlines

The rate-lock duration is separate from the 10-business-day period that may apply to expressing intent to proceed after receiving a Loan Estimate. That period is not the length of a rate lock. Check each deadline in the relevant disclosure or agreement, and ask the lender if you are unsure which event it governs. The CFPB’s Loan Estimate materials explain the intent-to-proceed process and the distinction between disclosures and loan approval.

Lock terms and expiration remedies are specific to the lender and agreement, so the general 30-, 45-, or 60-day range cannot tell you what will happen in an individual transaction. The CFPB’s guidance on changed Closing Disclosure rates was last reviewed September 11, 2024; for your transaction, rely on the current agreement, lender disclosures, and applicable current official rules.

Frequently Asked Questions

How many days does a mortgage rate lock usually last?

The CFPB says common lock periods are 30, 45, or 60 days, and sometimes longer. Your written lock agreement or Loan Estimate—not the typical range—sets your expiration date.

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What if my closing is delayed and the rate lock expires?

Contact your lender before the expiration date and ask whether an extension is available, what it costs, and what rate and points would apply if the lock expires. Lender policies and agreements differ; an extension is not automatic and may have a fee.

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Does a Loan Estimate mean my mortgage rate is locked?

Not necessarily. Lenders may lock at different points. Check page one of the Loan Estimate and any separate rate-lock agreement for the locked status and expiration date, and ask the lender to confirm if either is unclear.

Is there a standard fee to extend a mortgage rate lock?

The CFPB materials do not establish a standard extension fee. Ask your lender for the actual cost, how it is calculated, when you must request the extension, and whether the lender can decline.

Can my rate or points change while my rate lock is active?

A lock is conditional on the agreed period and relevant application details remaining stable. Changes to matters such as loan amount, down payment, credit score, appraisal, or verified income can affect terms. Ask the lender to explain any change and identify the application detail or lock term it relies on.

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Is the 10-business-day intent-to-proceed deadline the same as a rate-lock period?

No. It is a separate Loan Estimate-related deadline and is not the duration of a rate lock. Check the applicable disclosure or agreement to determine which deadline applies.

The Bottom Line

Mortgage rate locks commonly last 30, 45, or 60 days, but your written expiration date controls. Confirm whether your rate is locked, contact the lender before a possible delay, and get the extension cost, availability, and post-expiration options in writing. There is no universal extension fee or outcome if a lock expires.

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