6 Things to Know Before Locking a Mortgage Rate
A rate lock can protect you from a market move while your mortgage is being processed, but only within the lock’s actual terms. The expiration date, application changes, extension policy, and treatment of falling rates can all matter.
Quick Answer
- A mortgage quote and a mortgage rate lock are not the same thing.
- CFPB says locks are commonly offered for 30, 45, or 60 days, and sometimes longer.
- The Loan Estimate shows whether your rate is locked and the lock expiration.
- If the lock expires before closing, extension or repricing terms depend on the lender.
- A standard lock can also keep you from automatically benefiting if market rates fall.
1. Verify that the rate is actually locked
Do not rely on a verbal quote or an email that merely lists a rate.
CFPB says Page 1 of the Loan Estimate shows whether the rate is locked and, if so, for how long.
Get the lender’s lock confirmation and terms in writing.
2. Match the lock period to a realistic closing date
CFPB says 30-, 45-, and 60-day locks are typical, although longer periods may be available.
A short lock is not useful if appraisal, underwriting, title work, construction, condo review, or the purchase contract makes closing before expiration unrealistic.
Work backward from the contract closing date and ask the loan officer what steps could realistically delay final approval.
3. Ask about extension terms before the lock is close to expiring
Rate-lock extension pricing and policies are lender-specific.
Ask what happens if the lender causes the delay, if you cause the delay, and if market rates have moved when the lock expires.
Do not rely on a generic online claim that extensions always cost a certain percentage.
4. Application changes can affect locked pricing
CFPB explains that a rate lock generally protects the rate as long as you close within the specified period and there are no changes to the application.
Changes to the property, loan amount, loan type, occupancy, credit profile, or other pricing inputs can affect the terms under the lender’s policy.
Avoid opening new credit or making unnecessary financing changes while the mortgage is in process. Even when a change does not destroy a lock, it can complicate underwriting or pricing.
5. Ask what happens if market rates fall
A standard lock protects against rising rates, but it does not necessarily give you a lower rate if the market falls.
Some lenders offer a float-down or repricing policy. Eligibility thresholds, timing, and fees vary.
Ask before locking so you know whether a large market decline would give you any option other than keeping the locked rate or starting over elsewhere.
6. Recheck the locked terms before closing
Before signing, verify the final interest rate, points or lender credits, lock expiration, and the corresponding figures on the Closing Disclosure.
If the closing date slips, deal with the lock before it expires.
Before You Lock a Mortgage Rate Checklist
- Get written confirmation of the rate and expiration.
- Confirm points or lender credits tied to the rate.
- Match the lock length to the realistic closing timeline.
- Ask for the lender’s extension policy.
- Ask whether a float-down or repricing policy exists.
- Avoid unnecessary application changes.
- Verify the final terms on the Closing Disclosure.
FAQ
How long does a mortgage rate lock last?
CFPB says 30, 45, and 60 days are typical, with longer periods sometimes available.
Can a locked mortgage rate still change?
It can if the lock expires or relevant application details change under the lender’s terms.
What if mortgage rates fall after I lock?
You may remain at the locked rate unless the lender offers a float-down or repricing option.
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The Bottom Line
A rate lock is only as useful as its expiration date and written terms. Choose a period that can realistically reach closing and understand the lender’s rules for delays, changes, and falling rates before you lock.