What does it mean to float?

You do not lock yet, leaving your rate open to change, hoping it improves.

Most buyers lock after an accepted offer, once they have a clear closing date.

How long is a rate lock?

Often 30–60 days, though other lengths are available. Match it to your escrow.

What happens if my lock expires?

You may need an extension, which can cost a fee, or you may take the current market rate.

What is a float-down?

An option that lets you lock but still capture a lower rate if the market drops before closing. It may have a fee.

Can I lock and still get a lower rate?

Only with a float-down option. Otherwise, a lock holds your rate even if the market falls.

Yes. Rates could rise, raising your payment. Markets are hard to predict.

Does locking cost money?

The lock itself is often included, but extensions or float-downs may have fees.

Should I try to time the market?

It is very hard, even for experts. Many buyers lock to protect their plan.

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Home›Rates›Rate Lock vs Float

Rates · Understand Rates

Rate Lock vs Float: When should you lock your mortgage rate?

Mortgage rates can move every day. Once you have a loan in progress, you face a choice: lock your rate now, or float and hope it improves. This page explains both options, the risks, and how to decide, in plain language.

There is no crystal ball for rates. So this is really about managing risk and protecting your plan. Let's walk through it.

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Rising house icons and percent signs over a laptop, illustrating locking versus floating a rate

Quick answer

A rate lock freezes your interest rate for a set time (often 30–60 days) so it cannot change before you close, even if the market rises. Floating means you do not lock yet, hoping rates drop — but you risk them rising. Most buyers lock once they have an accepted offer and a clear closing date, to protect their budget.

What this means

Your rate is not final until it is locked. Until then, it can move with the market.

Locking is about certainty. Floating is about hoping for improvement while accepting risk.

Lock: Your rate is protected for the lock period. Safe from increases, but you usually cannot grab a lower rate if the market drops (unless you have a float-down option).

Float: Your rate stays open to change. You might get a lower rate, or you might pay more if rates rise.

Step by step

How it works

You apply and get a loan estimate. Your rate is quoted but not yet locked.

You choose to lock or float. With your lender's help.

If you lock: Your rate is held for the lock period (often 30–60 days).

If you float: Your rate can move until you decide to lock.

You must close before the lock expires. If not, you may need an extension, sometimes for a fee.

Lock vs float (quick compare)

OptionIf rates riseIf rates fall

LockYou are protectedYou usually keep your locked rate

FloatYou pay moreYou may get a lower rate

The float-down option

Some lenders offer a float-down, which lets you lock a rate but still capture a lower one if the market improves before closing. It may have a fee or conditions. Ask your lender if it is available.

Requirements (at a glance)

ItemWhy it matters

A loan in progressYou usually lock after an accepted offer

A closing dateThe lock must cover your timeline

Lock periodChoose one that fits your escrow length

Possible feesExtensions or float-downs may cost extra

Benefits

Locking:

Protects your budget from rate increases.

Gives you certainty for your payment.

Reduces stress during the process.

Floating:

A chance at a lower rate.

Useful if you expect rates to fall and can accept the risk.

Potential drawbacks (the honest part)

Locking:

You may miss out if rates drop (without a float-down).

Extensions can cost money if your closing is delayed.

Floating:

Rates could rise, raising your payment.

More stress and uncertainty.

Markets are hard to predict.

Real-world California examples

What it looks like in practice

Example 1 — Locking for certainty in San Diego.

Maria has an accepted offer and a 35-day escrow. She locks a 45-day rate to protect her budget, so a market jump cannot raise her payment.

Example 2 — Float-down in San Jose.

The Lee family locks but uses a float-down option. When rates dip before closing, they capture the lower rate.

Example 3 — Floating backfires in Sacramento.

Tom floats, hoping for a better rate. Instead, rates rise before he closes, and his payment is higher than if he had locked. This shows the risk of floating.

Examples are for learning only. Rate movements cannot be predicted, and outcomes vary.

Common mistakes

1Floating without a plan. Hoping for lower rates can backfire.

2Locking too short. If your escrow runs long, the lock can expire.

3Forgetting extension fees. Delays can cost money.

4Trying to time the market. Even experts cannot predict rates.

5Not asking about a float-down. It can offer the best of both worlds.

6Ignoring your timeline. Match the lock period to your closing date.

Good questions

Frequently asked questions

An agreement that freezes your interest rate for a set time so it cannot change before you close.

Next steps

Protect your rate with confidence

Locking protects your budget; floating is a gamble on the market. For most buyers, locking once you have a closing date is the safer choice. EZ Online Mortgage can explain your lock options, including any float-down, so you can protect your rate with confidence.

Get a Custom Quote (818) 305-6704

Keep learning

What Moves Rates Rate vs APR Points & Credits Homebuying Steps & Timeline

This page is for education only. It is not a loan offer or a promise of rates or terms. Rate movements cannot be predicted, and outcomes depend on your individual circumstances. Equal Housing Opportunity · NMLS #362311 · CA DRE #01871814.

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