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Mortgage Rate Lock: How to Protect Your Interest Rate
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Once you’ve shopped around and found the best interest rate for your home loan, there’s one more important step to take — getting a mortgage rate lock. Your mortgage rate isn’t guaranteed until it’s locked, and the wrong decision could leave you with a higher monthly payment when you buy a home — or less monthly savings if you’re refinancing.
Understanding the how, when and why of mortgage rate locks will give you the security of a rate that won’t fluctuate, which is especially important since mortgage rates change daily.
What is a mortgage rate lock?
A mortgage rate lock is a commitment from a lender to guarantee a mortgage rate for a set period of time. By locking in a mortgage rate, you don’t have to worry about the interest rate changing between your loan application and closing. As long as you close within the lock timeframe and there aren’t any changes to your application, your rate won’t budge.
Without a rate lock, your interest rate could rise during the mortgage process, leaving you with a higher payment. Lenders may lock your interest rate when they issue your loan estimate. If they do, you’ll see the details on page one of your loan estimate, which we’ve highlighted on the example below:
If your lender discovers any changes to your initial application before your closing, your interest rate could change.
Why should I lock in my mortgage rate?
The most obvious reason you should lock your rate is so it doesn’t change before your closing. A higher rate means more than just a higher monthly payment and thousands of dollars of extra interest charges over the life of your loan.
A sudden spike in your interest rate during the loan process could flip a loan approval to a loan denial if your debt-to-income (DTI) ratio exceeds lenders standard guidelines. Lenders calculate your DTI ratio by dividing your total monthly expenses (including your mortgage payment) by your before-tax income.
Let’s assume two borrowers making $82,000 per year are approved for a mortgage on March 3, 2022, with a closing date of June 23, 2022. During that time period, one borrower locked his mortgage rate at 3.76% in March, while the other borrower floated his rate until the third week of June when rates had risen to 5.81%.
In this example, both borrowers have a $488 per month car payment and a $300 per month student loans payment (both averages based on recent LendingTree auto loan and Student Loan Hero data), and are buying a $400,000 home with a 20% down payment.
|Date locked||Interest rate locked||PITI^||DTI||Approved or denied based on DTI|
|March 3, 2022||3.76%*||$2,017.12||40.07%||Approved|
|June 23, 2022||5.81%**||$2,412.98||45.7%||Denied|
*Freddie Mac Primary Market Mortgage survey data from March 3, 2022
**Freddie Mac Primary Market Mortgage Market Survey data from June 23, 2022
^ PITI stands for principal, interest, taxes and insurance. All four are included in monthly mortgage payments.
Essentially, the homebuyer that locked in their rate still qualifies because they locked their rate at the beginning of the loan process. The homebuyer that wasn’t locked no longer qualifies for a $400,000 home price because the extra $395.86 in monthly payment puts them over the lender’s 43% DTI ratio maximum.
When can I lock in my mortgage rate?
You can lock your rate once your lender has received your loan application, pulled your credit report and issued a loan estimate. If you’re buying a home, lenders typically can’t lock your loan rate until you have an accepted purchase contract. That’s because a mortgage is tied to real estate, which means the lock has to be tied to the address of the property you’re buying.
Some lenders offer programs that allow you to lock before you’ve found a home, and then transfer the lock to a home once you’re under contract.
When should you lock in your mortgage rate?
You should lock your mortgage rate as soon as possible in the mortgage process, as long as you’ve already shopped quotes from at least three to five lenders. On the other hand, it may be worth it to hold off on a mortgage rate lock depending on whether you’re going to buy or refinance a home.
How long can you lock in a mortgage rate?
Most lenders offer rate locks for 30, 45 or 60 days, according to the Consumer Financial Protection Bureau. However, you may find some lender with shorter term locks (as low as 15 days for purchase loans) or as long as 90 or 120 days if you’re willing to pay an upfront fee.
Lenders may also offer a lock option while you’re shopping for a home. These programs give you the security of a locked in rate while you’re house hunting. Once you find the home, the property address is added to the lock and you don’t have to worry about whether rates pushed your payment out of reach for your budget.
How to lock in your mortgage rate
The steps to locking in your mortgage rate are very simple:
- Ask your lender to lock your rate. You can’t actually lock your rate in — your lender must lock the rate on your behalf.
- Review the locked-in loan estimate. You’ll receive an updated loan estimate within three business days of your mortgage rate lock. Make sure the rate is correct, and check to make sure the closing costs associated with the rate haven’t changed.
- Note the lock expiration date. Your mortgage rate is only guaranteed if you close by the expiration date.
Why your interest rate could change after a mortgage rate lock
Any discrepancies between your loan application and the information vetted by your lender can result in a change to your locked rate. The following are the most common reasons a locked rate could change:
- Your credit score rises or falls. If your lender has to pull a new credit report before you close, a late payment or higher credit card balances could push your locked-in rate higher.
- You switch to a different loan program. Interest rates are tied to the loan type you choose. For example, if you apply for an FHA loan and switch to a conventional loan, the rate would have to be relocked based on conventional interest rates.
- Your home’s value comes in higher or lower than expected. If you’re buying or refinancing a home, a lower-than-expected appraised value could trigger a change to your interest rate. A higher appraisal may help you snag a better rate on a refinance, but it won’t help on a purchase loan since your rate is based on the lesser of the purchase price or appraised value.
What is the cost to lock in a mortgage rate?
Lenders don’t typically charge a rate lock fee if your lock is for 60 days or less. Longer term locks may require an upfront fee that can be applied toward your closing costs. As mentioned above, construction lenders may charge a fee to offer long-term locks while your home is being built.
If you miss your lock expiration date, you could be on the hook for a rate lock extension fee. Discuss your rate lock period and ask your loan officer about their rate lock extension and relock cost policies.
What is a mortgage rate lock float down?
A mortgage rate float down is a special program some lenders have in place to allow you to take advantage of falling interest rates, even if your rate is already locked. You’ll typically need to meet the following criteria in order to be eligible:
- Your loan must be conditionally approved. Lender float-down policies usually only apply if your loan has been approved based on a review of your credit, income and assets.
- Your rate must drop by a certain amount. In most cases you can’t float down your rate unless it drops a quarter- to half-percentage point.
- You’ll need to pay a fee. Because the lender has to renegotiate your lock with the investor you already committed to, you’re usually charged a fee of up to 0.50% of your loan amount.