The period when a borrower has not locked mortgage pricing and the quote can still move.
Rate float means the borrower has not locked mortgage pricing yet, so the quoted rate, points, or credits can still move before a lock is accepted.
Rate float matters because mortgage pricing can improve or worsen while a borrower is shopping, waiting on a contract, or deciding when to lock. Floating can help if market pricing improves, but it can also make the final rate or cash-to-close less predictable.
It also matters because floating is different from having a float-down feature. A borrower who is floating is not protected. A borrower with a float-down feature may already be locked and only has a limited path to improvement under the lender’s rules.
Borrowers encounter rate float before a Rate Lock is in place. This can happen during quote shopping, after preapproval but before contract, or while the borrower is waiting to decide whether the timing is right to lock.
The term becomes practical when a lender says the quote is not locked yet or when a borrower asks whether the pricing shown today can change tomorrow.
| Pricing state | What it means | Main risk |
|---|---|---|
| Rate float | Pricing has not been locked | Market pricing can worsen before the borrower locks |
| Rate Lock | Pricing is protected for a defined period | The lock can expire before closing |
| Float Down | Some locked files can improve if market pricing moves favorably | The feature may be limited, unavailable, or conditional |
An unlocked rate quote is a snapshot, not a promise. Market movement can change the note rate, discount points, lender credits, and cash needed to obtain a particular rate. A lender’s daily pricing can also react differently across loan programs and lock periods, so broad market headlines do not reveal the exact change in one borrower’s quote.
The Loan Estimate indicates whether the interest rate is locked. If it is not locked, the rate, points, and lender credits may change before the borrower accepts a lock.
Before floating, identify:
Monitor a consistent quote rather than rate alone. A lower rate paired with materially higher points may not be an improvement. Once the borrower decides to lock, obtain written confirmation; telling a loan officer that the borrower is “ready” does not itself document the accepted terms.
Floating should be an explicit risk decision, not a default caused by inattention. Record the current quote and identify the maximum payment, points, or cash-to-close increase the transaction can absorb. Also set a calendar deadline based on the expected closing date and available lock periods.
| Boundary | Example borrower rule |
|---|---|
| Payment | Lock if the quoted payment reaches the budget ceiling |
| Upfront pricing | Lock if zero-point pricing is no longer available |
| Calendar | Lock by the last date that still allows a practical closing window |
| Documentation | Treat the rate as floating until written confirmation is received |
This approach does not predict the market. It limits the damage from waiting too long. A borrower who cannot tolerate worse pricing has less capacity to float than one with substantial payment and cash reserves.
A borrower receives a Monday quote of 6.500% with no points but does not lock it. By Thursday, 6.500% costs 0.500 points, or $2,000 on a $400,000 loan, while the no-points option has moved to 6.625%. Because the borrower was floating, both the rate and the cost of retaining the earlier rate were exposed to change.
Rate float differs from Rate Lock because floating means the borrower does not yet have pricing protection. A lock is the lender’s commitment to hold selected pricing for a defined period.
It also differs from Float Down. Floating is the unlocked state before a lock. Float-down is a feature that may improve pricing after a lock already exists.
It also differs from Lock Confirmation. Lock confirmation documents the accepted locked terms. A floating quote has not yet reached that locked-document stage.