A lock feature that can improve pricing if market rates move lower.
Float down is a mortgage pricing feature that may let a borrower improve the terms of an existing rate lock if market pricing moves favorably before closing.
Float-down matters because borrowers often feel trapped when they lock and then see rates improve before closing. A float-down feature can reduce that frustration, but only if the lender offers it and the exact rules are understood.
It also matters because many borrowers misunderstand the term as a general right. Float-down is not automatic. It is a specific feature governed by lender policy, timing rules, and sometimes extra cost.
Borrowers encounter float-down after a Rate Lock is already in place. It becomes relevant only if market conditions improve before the mortgage closes.
The feature is most important late in the pre-closing period, when the borrower wants to know whether the locked terms are final or whether limited improvement is still possible.
| Feature | What it does | Borrower question |
|---|---|---|
| Rate Lock | Protects pricing against worse market moves for a defined period | Am I protected if rates rise before closing? |
| Lock Period | Defines how long that protection lasts | Will my transaction finish inside the protected window? |
| Float down | May allow limited improvement if pricing gets better | Can I benefit if the market improves after I lock? |
| Rate Lock Extension | Adds time if the file is running late | What happens if the lock is about to expire before closing? |
| Rate Float | Leaves pricing unlocked before a lock is accepted | What happens if I wait to lock? |
Lender policies may require a minimum market improvement, allow exercise only once, limit the change passed to the borrower, impose a deadline before closing, or charge a fee. Some compare current pricing with the original lock while preserving only part of the improvement.
Ask for those conditions before locking, not after rates fall. A vague statement that the lender “may work with the borrower” is not the same as a defined float-down feature.
When a float-down is available, compare the revised rate, points, lender credits, APR, payment, and expiration date with the original lock. A lower rate can be offset by fewer credits or more points. A revised lock can also carry a shorter remaining window or additional cost.
Confirm how to request or exercise the feature and obtain written acceptance. Watching market rates fall does not activate it automatically. The borrower may need to act before a stated deadline while the loan remains approved and the scenario remains unchanged.
Float-down protects against only part of favorable market movement; the original lock still performs the separate job of protecting against worsening pricing.
The borrower should be able to answer these questions from the lender’s written policy or lock agreement:
These details distinguish an actual float-down feature from an informal promise to revisit pricing. They also let the borrower compare a lock with float-down against a less expensive standard lock or the risk of continuing to float.
A borrower locks 6.750% with a $2,000 lender credit. Market pricing later meets the lender’s float-down threshold, and the lender offers 6.625% but reduces the credit to $500. The borrower compares the monthly savings with the additional $1,500 due at closing and confirms that the expiration date remains workable before exercising the feature.
Float-down differs from Rate Lock because it is not the initial commitment itself. It is a possible adjustment feature attached to some locks.
It also differs from Lock Period. Lock period tells you how long the locked pricing lasts. Float-down tells you whether pricing can improve during that period.
It also differs from Rate Lock Extension. Float-down is about improving locked pricing if the market helps, while an extension is about preserving time protection when closing is delayed.