Some mortgage costs can increase at closing, but others can't. It is illegal for lenders to deliberately underestimate the costs on your Loan Estimate. However, lenders are allowed to change some costs under certain circumstances.
Interest rate
If your interest rate is not locked, it can change at any time. Even if your interest rate is locked, your interest rate can change if there are changes to your application information or if you do not close within the rate-lock timeframe. Check at the top of page 1 of your Loan Estimate to see whether your rate is locked, and until when. Learn more about how rate locks work.
Closing costs
There are three categories of closing costs. Some closing costs the lender can increase by any amount, some the lender can increase by up to 10 percent, and some the lender can’t increase at all.
However, under certain circumstances these rules do not apply. For example, your lender is allowed to change your closing costs without restriction if:
These types of situations are called a “change in circumstances”.
Costs that can increase by any amount
These costs are not controlled by the lender, and can increase by any amount at any time:
Costs that cannot increase at all
If there is a “change in circumstances,” these costs can change by any amount, but otherwise they cannot change at all:
Costs that can increase by up to 10 percent
If there is a “change in circumstances,” these costs can change by any amount. If there is no change in circumstances, then the total of these costs cannot increase by more than 10 percent:
What happens when the costs change?
If your application has a “change in circumstances,” you will likely receive a revised Loan Estimate. If the costs have increased more than the allowed limits and your application has not had a “change in circumstances,” you are entitled to a refund of the amount above the allowable limits.