If your mortgage rate lock expires before you close, your lender is no longer obligated to honor the rate you were promised. The loan gets repriced to current market rates, or in some cases a lender’s less favorable “worst-case” pricing policy, unless you pay for a lock extension or relock. The loan itself does not disappear or get cancelled: you simply lose the rate guarantee and need to decide how to move forward. This guide breaks down why locks expire, what it actually costs when they do, how broker-sourced loans handle the problem differently than a single lender’s shelf, and what to do differently on your next mortgage so this doesn’t happen again.
What Actually Happens When Your Lock Expires
A rate lock is a lender’s written commitment to hold a specific interest rate and set of points for a defined window, typically anywhere from 15 to 60 days depending on the loan program and lender. While the lock is active, market rate movements don’t affect your loan. Once the lock period ends and your loan hasn’t closed, that protection lapses.
Two related terms matter here. A float-down is an optional feature some lenders offer that lets you capture a lower rate if the market improves after you lock, usually for a fee or with restrictions on timing. A relock is what happens after expiration: the lender requalifies your loan for pricing at that point in time, based on the day’s rate sheet, and issues a new lock, often at a different rate than your original one.
A common misconception is that an expired lock means the loan falls apart or the lender walks away. That’s not how it works. Your application, underwriting file, and approval remain intact. What changes is pricing. If rates have risen since you locked, you’ll likely pay more, either through a higher rate, added points, or a fee to extend the original terms. If rates have fallen, some lenders will simply reprice you to the lower current rate without you having to ask, though this isn’t guaranteed and varies by lender policy.
The practical takeaway: an expired lock is a pricing event, not a loan-killing event. How much it costs you, and how flexible your options are, depends heavily on why the lock expired and who you’re working with.
Why Locks Expire Before Closing
Most lock expirations trace back to timeline slippage rather than borrower error. Underwriting delays are among the most common culprits, especially when a file requires additional documentation or runs into a condition that takes time to clear. Appraisal turnaround is another frequent bottleneck: in busy markets, appraisers can take longer than expected, especially for unique properties or rural areas with fewer local comps. Title issues, such as a lien that needs to be resolved or a survey discrepancy, can also add days or weeks. On top of all that, a seller pushing back the closing date for their own reasons, like a delayed move-out or a contingency on their next purchase, can eat into your lock window even when your own file is ready to go.
Active rate-shoppers face a particular version of this risk. If you’re watching rates closely and lock in early to secure a number you like, you’re effectively betting that your file will move through underwriting, appraisal, and title within that window. The earlier you lock relative to your anticipated closing date, the more buffer you have, but also the more exposure you have if something in the process stalls. A 30-day lock secured the day you go under contract on a home with a 45-day closing timeline is already a mismatch waiting to happen.
Lock periods themselves aren’t standardized. Conventional loans often come with 30-day or 45-day options, while government-backed programs and portfolio products may offer shorter or longer windows depending on the lender’s pricing model. Longer locks typically cost more upfront, either through a higher rate or additional points, because the lender is holding pricing risk for a longer period. Choosing the right length isn’t about picking the cheapest option; it’s about matching the lock to a realistic view of how long your specific file will take, given the property, the loan type, and the parties involved in the transaction.
Your Options and What They Cost: A Worked Example
When a lock expires, borrowers generally have three paths. The first is paying an extension fee to preserve the original rate for a set number of additional days, typically quoted in basis points per day of extension. The second is relocking at current market pricing, which resets your rate to whatever the lender’s rate sheet shows that day. The third, less common but worth asking about, is requesting that the lender honor the original rate as a goodwill gesture, particularly if the delay was clearly the lender’s own underwriting backlog rather than anything related to the borrower.
Here’s how the math plays out on a $400,000 loan. Suppose you locked at 6.25% on a 30-year fixed term. Your principal-and-interest payment would run approximately $2,463 per month. If your lock expires and the loan reprices to 6.625%, that same $400,000 loan now carries a payment of roughly $2,561 per month. The difference, about $98 a month, adds up to roughly $1,176 more per year, and considerably more over the life of the loan if you don’t refinance later.
Compare that to a lender-charged relock fee. If your lender charges 0.25% of the loan amount to extend or reinstate your original rate, that’s a flat $1,000 on a $400,000 loan. In this scenario, paying the $1,000 fee to preserve the 6.25% rate costs less than absorbing the higher payment for even a single year at the repriced rate. That’s the calculation worth running any time you’re facing this decision: compare the one-time extension cost against the ongoing cost of a higher rate, not just against the sticker price of the fee itself.
Extension fees vary by lender and by how many days you need, so it’s worth asking for the exact daily rate before assuming a relock is your only option. A short delay, like five to ten days waiting on a final title clearance, often costs far less to bridge with an extension than to absorb through a full reprice.
Broker-Sourced Loans vs. a Single Lender’s Shelf When a Lock Expires
How much flexibility you have when a lock expires often comes down to whether your loan was sourced through a broker working with multiple wholesale lenders, or through a single direct lender with one rate sheet and one set of policies. Both structures can get a loan closed, but they behave differently when a file stalls near the end of a lock window.
A single-shelf lender, whether that’s a large national name like Rocket, Movement, Guild, or NFM, or a regional bank, has one internal pricing and relock policy. If that lender’s underwriting queue is backed up and your lock expires, you’re negotiating with the same institution that caused the delay, using whatever extension or relock terms they offer that day. There’s no alternative pricing source to compare against in real time.
A broker working across a network of wholesale lenders has more room to maneuver. If one lender’s relock pricing looks unfavorable, or that lender’s timeline has clearly stalled, a broker can potentially move the file to another wholesale lender with its own lock terms and pricing, sometimes salvaging a better outcome than accepting the original lender’s reprice. This isn’t guaranteed in every situation, since switching lenders mid-file takes time too, but it’s an option that simply doesn’t exist when you’re locked into a single institution’s shelf from the start.
| Factor | Single-Shelf Lender | Broker (Multiple Wholesale Lenders) |
|---|---|---|
| Relock flexibility | Limited to that lender’s own policy and rate sheet | Can compare relock terms across multiple wholesale lenders |
| Pricing transparency | One rate sheet, not benchmarked in real time | Pricing compared across lenders before choosing a lock |
| Backup options if a file stalls | None; same lender handles the delay and the reprice | Potential to shift the file to another wholesale lender |
| Underwriting bottleneck exposure | Tied entirely to that lender’s current queue | Diversified across lenders with different capacity |
This is part of why Free Mortgage Search is built around broker independence rather than a single bank’s rate sheet. Working with hundreds of wholesale lenders through one broker relationship means lock terms, extension policies, and pricing can be compared before you commit, rather than discovered after a delay has already put you in a tough spot.
How to Reduce Lock-Expiration Risk on Your Next Mortgage
The most reliable fix is matching your lock length to a realistic closing timeline rather than the shortest, cheapest option on the rate sheet. Before locking, ask your loan officer to confirm when the appraisal has been ordered and when title work is expected back, since both are common sources of delay that eat into a lock window. If either is running behind schedule at the time you lock, build in extra days rather than cutting it close.
It’s also worth asking about float-down provisions before you sign anything. A float-down won’t help with an expired lock directly, but understanding whether your lender offers one, and under what conditions, gives you a clearer picture of your options if market rates shift during your loan process.
Loan size and program type also affect what’s available to you. As of 2026, the FHFA’s conforming loan limit is $806,500 in most areas and up to $1,249,125 in designated high-cost areas, and these figures adjust annually. Loans above these limits, along with certain government-backed programs, can carry different lock windows and extension policies than standard conforming loans, so it’s worth confirming current limits and lock terms with your loan officer rather than assuming last year’s numbers still apply.
Before committing to any single lender’s lock, a soft-pull comparison tool like NoTouch Credit Pull lets you see lock terms and pricing across multiple lenders without triggering a hard inquiry on your credit report. That gives you a way to shop lock length, extension fees, and float-down availability side by side, so the lock you choose actually fits your transaction’s realistic timeline instead of just the number that looked best on day one.
Rate Lock Expiration: Frequently Asked Questions
Does an expired mortgage rate lock hurt my credit?
No. A lock expiration is a pricing issue between you and the lender, not a credit event. It doesn’t get reported to credit bureaus and won’t affect your score.
Can I ask for a lock extension for free?
Sometimes, particularly if the delay was clearly caused by the lender’s own underwriting backlog rather than something on the borrower’s side. It’s always worth asking before assuming you have to pay, since policies vary by lender.
What happens if rates dropped since I locked?
If your lock expires after rates have fallen, some lenders will reprice you to the lower current rate automatically, while others require you to request it. Either way, ask directly rather than assuming you’re stuck with your original, higher locked rate.
How long is a typical mortgage rate lock?
Lock periods commonly range from 15 to 60 days, with 30-day and 45-day locks being the most common on conventional loans. The right length depends on your expected closing timeline, not just the lowest-cost option offered.
Can a seller delaying closing cause my lock to expire?
Yes. Your lock is tied to a calendar window, not to whose fault a delay is. If a seller pushes the closing date and your file isn’t ready to close within your original lock period, you’ll face the same repricing or extension decision as any other delay.
Do all lenders charge the same relock fee?
No. Relock and extension fees vary by lender and are often quoted as a percentage of the loan amount or a per-day basis point charge. Comparing these terms before you lock is one of the few ways to know what you’re exposed to if a delay happens.
Can I switch lenders if my lock expires?
It’s possible, though switching mid-file takes time and isn’t always practical close to a closing date. Working with a broker who has relationships with multiple wholesale lenders makes this option more realistic than it would be with a single direct lender.
What should I ask before locking a rate?
Ask how long the lock lasts, what the extension fee structure looks like if you need more time, whether a float-down is available, and where the appraisal and title work currently stand. Those four answers tell you whether the lock you’re about to sign actually fits your transaction.
What to Do If Your Lock Is About to Expire
An expired rate lock feels alarming in the moment, but it’s a routine part of the mortgage process, not a sign that your loan is in jeopardy. Underwriting delays, appraisal backlogs, and seller-driven timeline shifts happen on a meaningful share of transactions, and lenders have established processes for extensions and relocks precisely because this comes up so often. The real variable is whether you have options when it happens, which is largely determined by whether your loan was sourced through a broker with access to multiple wholesale lenders or through a single institution’s rate sheet.
If you’re currently rate-shopping, in underwriting, or bracing for a lock that’s running close to its expiration date, it’s worth seeing what terms and pricing look like elsewhere before you accept a lender’s relock offer at face value. Compare rates now and take the first step toward securing your home with expert guidance every step of the way, using Dare to Compare to see current lock terms and pricing across multiple wholesale lenders before you decide your next move.
