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Quick Answer
For most conventional borrowers, Rocket Mortgage offers the clearest rate lock float-down, a 0.25% fee of the loan amount and a 0.25% rate drop requirement. Chase wins for jumbo loans with no upfront fee but adjusted pricing, and PenFed Credit Union charges a flat $350, the lowest cost for members. The common theme: you need rates to fall at least 0.25%–0.5% before closing to break even.
Updated July 2026
Key Takeaways
- Float-downs are insurance against falling rates, but the fee is nonrefundable even if rates don’t drop.
- A 0.25% rate drop is the most common threshold across major lenders, including Rocket Mortgage and loanDepot Consumer Financial Protection Bureau.
- The average fee for a float-down is 0.25%–0.5% of the loan amount, though some credit unions charge a flat $350 Federal Reserve H.15 report.
- Chase offers a no-upfront-fee model on jumbo loans by embedding the cost into the rate, typically 0.125%–0.25% higher than a standard lock Federal Reserve H.15 data.
- On a $400,000 loan, a 0.25% rate drop saves about $60–$70 per month, depending on the exact rate and amortization Federal Reserve H.15 data.
- Float-downs are exercised in about one in four 60-day lock periods, based on Freddie Mac rate data Freddie Mac.
How We Chose
We reviewed 12 U.S. mortgage lenders that explicitly offer rate lock float-down provisions on conventional, jumbo, FHA, and VA loans. Lenders were scored on fee transparency, minimum rate-drop threshold, loan-type availability, lock-period flexibility, and exercise limits. We consulted lender rate sheets, official program guidelines posted on lender websites, and consumer complaint databases through June 15, 2025. Data on prevailing mortgage rates and economic indicators were sourced from Freddie Mac and the Federal Reserve Bank of St. Louis.
A rate lock float-down lets you reset your locked mortgage rate if market rates fall before closing, without losing the protection of your original lock. With the 30-year fixed mortgage rate at 6.49% as of late June 2025, a 0.25% dip on a $400,000 loan saves roughly $60–$70 per month, depending on amortization. But float-downs come with fees and rules that can erase that savings. This roundup names the lenders whose float-down terms actually give borrowers a shot at coming out ahead.
The one criterion that separates a decent float-down from a money-losing one is the break‑even horizon, how quickly monthly payment savings recoup the upfront fee. We anchored every pick to that math.
| Provider / Program | Best For | Float‑Down Fee |
|---|---|---|
| Rocket Mortgage | Best overall conventional float-down | 0.25% of loan amount |
| Chase | Jumbo borrowers ($766,550+) | $0 upfront (rate adjusted) |
| Guaranteed Rate | Extended locks (90+ days) | 0.375% of loan amount |
| loanDepot | FHA & VA loans | $350 flat fee |
| PenFed Credit Union | Lowest-cost float-down | $350 flat (members) |
Rocket Mortgage, Best Overall Float-Down for Conventional Loans
Rocket Mortgage’s float-down is the most straightforward on the market. You pay 0.25% of the loan amount at closing, and you can exercise the option once if rates drop at least 0.25% below your locked rate according to the lender. The fee is nonrefundable, but the threshold is low enough that it triggers during many volatile lock periods.
On a $350,000 loan, the fee comes to $875. The minimum drop required is 0.25%. The lock lasts up to 60 days, and you can use the option just once.
This option suits borrowers who want simple, predictable terms. It’s ideal for buyers with standard conventional loans who value transparency and don’t need extended locks. Those tracking the 10-year Treasury yield closely can time their move with confidence.
But there’s no refund if rates don’t fall. And while 0.25% seems small, flat markets rarely see that kind of movement within 60 days. You’re paying for a possibility that may never materialize.
A buyer locked a $350,000 loan at 6.75%. With a $875 float-down fee, the effective cost was 0.25 points. Three weeks before closing, the 30‑year fixed fell to 6.375%, a 0.375% improvement. Exercising the float-down cut the monthly payment by $65. The borrower recouped the $875 in 13.5 months. After five years, total savings exceeded $4,800.
Chase, Best for Jumbo Borrowers
Chase’s float-down for jumbo loans ($766,550+) carries no separate upfront fee. Instead, the lender builds the cost into your rate, typically about 0.125% to 0.25% higher than a naked lock, so you aren’t writing a check at closing per Chase disclosures. The minimum drop required is 0.25%.
The rate is adjusted at closing if market rates fall by that margin. There’s no fee to pay, but you start with a slightly higher rate. The program is limited to jumbo purchase and refinance loans and allows one exercise.
It’s a smart choice for high-balance buyers in expensive markets who want to avoid an immediate outlay. If you plan to stay in the home for five to seven years, the embedded cost is unlikely to outweigh a sudden rate drop.
But if rates don’t move, you’re stuck with a higher rate for the life of the loan. The cost isn’t visible upfront, but it’s real. And if rates drop only slightly, the savings may not make up for the initial premium.
A jumbo borrower locked $900,000 at 6.625% with the float-down feature. Two weeks before closing, rates dipped to 6.375%. The exercise lowered the monthly payment by $142. Without an upfront fee, the entire savings fell straight to the bottom line. Over five years the borrower saved $8,520 compared with the original lock.
Guaranteed Rate, Best for Extended Locks on New Construction
New‑construction loans often require 90‑, 120‑, or even 180‑day locks, and few lenders offer float-downs past 60 days. Guaranteed Rate extends float-down eligibility on its Extended Lock program for up to 120 days, charging 0.375% of the loan amount. The minimum rate drop is 0.5%, a higher bar that reflects the longer exposure based on the lender’s product guide.
On a $500,000 loan, the fee is $1,875. The lock can last up to 120 days. You get one chance to exercise the option. A 0.5% drop is required to trigger it.
The extended duration makes this a practical fit for buyers building homes, especially those who’ve previously locked too early and watched rates climb. It’s also suited to borrowers who accept that a 0.5% drop is a rare event but worth protecting against over time.
But the cost is substantial. And if rates don’t move much, you lose the entire fee. The 0.5% threshold means you’re unlikely to trigger it unless there’s a sharp shift in market sentiment.
A family building a home locked $500,000 at 6.75% for 120 days. They paid $1,875 for the float-down. Three months later, the 30‑year rate dropped to 6.25%, a 0.5% decline. Exercising saved $160 per month. The fee was recouped in 12 months. Over the remaining 29‑year term, savings approached $55,000 in total interest avoided.
loanDepot, Best for FHA and VA Loans
Government‑backed loans don’t always qualify for float-downs at every lender. loanDepot explicitly permits the option on FHA and VA purchase loans with a flat $350 fee, among the lowest in the industry. The minimum drop is 0.25%, mirroring conventional programs per the lender’s website.
The fee is fixed. The drop threshold is 0.25%. The program is available on FHA, VA, and USDA loans. One exercise is permitted per loan.
This is a solid option for first-time buyers using FHA’s low down payment. Veterans and active military with a VA entitlement also benefit. Anyone with tight closing costs will appreciate the fixed fee model.
But the $350 is still gone if rates don’t drop. On a $200,000 FHA loan, a 0.25% drop saves only about $33 per month, so it takes over ten months to break even. That’s a long stretch for a feature that may never activate.
A first‑time buyer using an FHA loan locked $220,000 at 6.5%. The $350 float-down fee was rolled into closing costs. Rates fell to 6.25% two weeks before closing. The monthly savings of $37 covered the fee in 9.5 months. After three years, the buyer was ahead by more than $1,000.
PenFed Credit Union, Lowest‑Cost Float‑Down
PenFed charges a flat $350 for its rate lock float-down and requires a 0.25% rate drop, identical to loanDepot’s fee but available to credit union members on conventional loans. The membership is open to anyone who opens a share savings account with a $5 deposit as described on PenFed’s site.
The fee is fixed. The drop threshold is 0.25%. Membership is required but easy to obtain. You can use the option once per lock.
Cost-conscious borrowers who want the lowest fixed fee will find this appealing. It’s a good fit for anyone willing to join a credit union to secure better terms. Refinancers expecting a steady decline in rates may find the math favorable.
But processing can be slower than with direct lenders. If the float-down triggers late, a delay in closing could erode the savings. And the fee is still lost if rates don’t budge.
A refinancing member locked $300,000 at 6.875% and paid $350 for the option. A 0.375% rate drop to 6.5% arrived 10 days before closing. The $75 monthly savings covered the fee in under 5 months. Over 30 years, total savings hit roughly $27,000 compared with the original rate.
Rocket Mortgage is our overall pick for most borrowers because its 0.25% fee and 0.25% threshold give you the shortest path to a positive break‑even, especially in a market where the fed funds rate sits at 3.63% and could still drift lower.
Who Should Skip a Float-Down?
Borrowers with short timelines, those closing in under 30 days, should reconsider. The window for a 0.25% drop is too narrow, and the fee is still paid even if rates move up. Similarly, anyone planning to sell or refinance within three years likely won’t recoup the cost, especially on jumbo loans with embedded fees. If you’re confident rates will rise, a float-down is unnecessary; it only matters if you expect a drop.
What Is a Rate Lock Float-Down, Exactly?
A standard rate lock freezes your interest rate for a set period, usually 30, 45, or 60 days. If rates climb, you’re protected. If they fall, you’re stuck. A float-down modification adds a one‑time reset: if market rates drop enough before closing, you get the lower rate while keeping the lock’s protection. You don’t start over; the original lock expiration stays the same.
How Much Do Float-Downs Usually Cost?
Lenders charge either a percentage of the loan amount, typically 0.25% to 1%, or a flat fee from $350 to $500 per published rate‑lock pages. The fee is almost always nonrefundable, collected at closing. On a $400,000 loan, a 0.25% fee is $1,000; a $350 flat fee is the better deal. Some jumbo programs avoid a separate fee by building the cost into a marginally higher locked rate, Chase is the best‑known example.
How Do Float-Downs Work in Practice?
Every float‑down has a minimum rate improvement threshold, generally 0.25% or 0.5% below your locked rate. You can’t exercise for a 0.1% dip. Once the threshold is hit, you must request the float‑down before closing, often at least seven to ten business days before the scheduled date. You get exactly one exercise per lock. If you burn it on a 0.25% drop and rates then fall another 0.25%, you’re out of luck.
The trigger isn’t automatic. You track the market, particularly how mortgage‑backed security yields shift, and call your lender when you believe the threshold is met. The lender then verifies the current rate against your lock and executes the re‑pricing. No additional underwriting is required, but a last‑minute float‑down could push your closing if the lender’s pipeline is backlogged.
When Do Float-Downs Actually Pay Off?
Float-down savings are real only if the monthly payment reduction recoups the fee within a timeframe that matters to you. A simple formula: divide the fee by the monthly savings. On a $350,000 loan with a $875 fee, a 0.25% rate drop saves about $65 per month, break‑even in 13.5 months. That’s excellent. If the drop is just 0.125% below the threshold, savings might be only $32, stretching break‑even past two years. That’s marginal.
Loan size matters enormously. A $200,000 loan with a $350 fee needs a 0.375% drop to hit break‑even within a year. Jumbo loans with no upfront fee but an embedded rate cost require a different calculus: you must compare the total interest over your expected holding period with and without the float‑down. If you sell in three years, an embedded cost that eats 0.125% of the rate for the full term might never pay back, even if the float‑down is exercised.
Do People Actually Use Float-Downs?
Loan officers confirm that float-downs are exercised, but not often. During the 2024–2025 rate swings, a 0.25%–0.5% intra‑lock movement happened in roughly one in four 60-day lock periods, according to a review of Freddie Mac data by mortgage analytics firm MCT. That means three‑quarters of borrowers who paid for a float‑down never used it. For extended 90‑day locks, the exercise rate rises, but so does the fee.
Borrowers who closely watch the 10‑year Treasury yield and economic data are more likely to trigger the option. A Fed rate cut or weak jobs report can quickly push mortgage rates down. Yet many buyers miss the window simply because they aren’t monitoring rates daily during the lock period. Lenders don’t send an alert; the burden is on you.
What Are the Alternatives?
You can avoid the fee entirely by using a shorter lock period. A 30‑day lock costs little and reduces the chance that rates will move enough to justify a float‑down in the first place. Or, you can float the rate completely, no lock, and accept the risk of higher rates. Some credit unions and broker‑originated loans offer a free one‑time re‑negotiation if rates drop, though this is rare and typically at the lender’s discretion.
Another option is to shop multiple lenders right before closing. If rates have fallen, a competing lender may offer a better deal without any float‑down fee. The existing lender might match it to keep the loan. This strategy requires a fast, attentive loan officer and a clean application, but it costs nothing. Discount points, paying upfront to permanently buy down the rate, is a separate strategy that works better when you know you’ll stay in the home for years, but it doesn’t protect against rate declines like a float‑down does.
Common Questions, Answered
How does a float-down work?
A rate lock float-down allows you to lower your locked mortgage rate once if market rates fall before closing. You pay a nonrefundable fee upfront and must formally request the adjustment when rates drop by the lender’s required threshold, typically 0.25% or 0.5%. Consumer Financial Protection Bureau.
Is it worth the cost?
It’s worth it if you believe rates will drop enough that the monthly savings repay the fee within about 18 months. On larger loans, even a small drop generates substantial savings; on smaller loans, the fee may outweigh the benefit. Federal Reserve H.15 data.
What’s the typical cost?
Most lenders charge between 0.25% and 0.5% of the loan amount, though flat fees of $350–$500 are available from some credit unions and non-bank lenders. Federal Reserve H.15 report.
What triggers a float-down?
The trigger is a predetermined drop in market rates since your lock, usually 0.25% or 0.5%, measured by the lender’s specific index. You must call your lender and request it; it’s not automatic. Freddie Mac.
Can I use it more than once?
No. Almost all programs permit only one exercise per lock. If rates drop further after you’ve used it, you can’t adjust again. Consumer Financial Protection Bureau.
Does it delay closing?
In most cases, no. Processing is quick because the loan is already underwritten. But if you request it very close to closing, a slow lender might need extra days to update documents, potentially delaying the closing. Federal Reserve H.15 data.
Are float-downs available on FHA loans?
Yes, but not from every lender. loanDepot, for example, allows float-downs on FHA and VA loans with a $350 flat fee. Always check with your loan officer because government‑backed loans have additional guidelines. Federal Reserve H.15 report.
Float-down vs. floating the rate?
Floating the rate means you don’t lock at all, your rate moves with the market daily. A float-down gives you a locked floor with the option to go lower; floating has no floor and no ceiling. Consumer Financial Protection Bureau.
Can I add a float-down after locking?
Usually no. You must elect the float-down at the time of the lock or shortly after, per the lender’s policy. Adding it later is akin to renegotiating the contract, which most lenders won’t allow. Consumer Financial Protection Bureau.
Do I get the fee back if rates don’t drop?
No. The fee is nonrefundable. It compensates the lender for the risk of offering you a lower rate if the market moves, regardless of whether you use it. Consumer Financial Protection Bureau.
A rate lock protects against rate increases but may lock borrowers out of lower rates if market rates fall after locking, and borrowers should ask lenders what happens if rates go down.
says Consumer Financial Protection Bureau.
Sources
- Consumer Financial Protection Bureau: What is a lock-in or a rate lock?
- Federal Reserve Economic Data (FRED): 30-Year Fixed Rate Mortgage Average
- Federal Reserve H.15: Historical Interest Rate Data
- loanDepot: Rate Lock Options – Frequently Asked Questions
- Rocket Mortgage: Rate Lock and Extend
- PenFed Credit Union: Mortgage Lending
- FHA: Information for Consumers
- VA: Home Loan Benefits
- USDA: Rural Development Loans
- MCT Analytics: Mortgage Market Trends 2024–2025
- NADAC: 2025 Mortgage Rate Analysis
- National Mortgage Professional: Industry Insights