The Truth About Rate Locks: What Every Buyer Should Know

Mortgage contract signing

The Truth About Rate Locks: What Every Buyer Should Know

Can a lender raise the rate if the buyer has a Good Faith Estimate (GFE)?

No — if the interest rate is locked, the lender must honor it unless there’s a valid “changed circumstance” under RESPA. These include changes in credit, income, loan amount, property value, or delays caused by the buyer. Without those, the lender cannot raise the rate after a locked GFE.

What if the rate isn’t locked?

Then the rate can still float, and the lender may change it until the buyer chooses to lock it. In that case, a revised GFE should be issued if terms change.

Can the buyer get a lower rate if rates drop after locking?

Not automatically. A locked rate is fixed unless the lender offers a “float-down” option — a one-time opportunity to switch to a lower rate during the lock period. It usually requires specific conditions and may involve a fee. Buyers should always ask about this in advance and get it in writing.

Key Takeaway: Locking your rate gives you protection, but it’s not a guarantee that you’ll benefit from market drops — unless you have the float-down feature. Talk to your lender and understand your options before locking in.

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