Should I lock my mortgage rate today?

There's no reliable way to know whether rates will be higher or lower tomorrow. Lock decisions are better made around your closing date, whether the current rate fits your budget, the cost of the lock itself, and how much risk you're comfortable carrying — not around a market prediction. If your closing date is reasonably certain and the payment works for you, locking removes the risk of rates rising before you close.

Can mortgage rates change after pre-approval?

Yes. A pre-approval estimates what you can qualify for; it doesn't lock a rate. Rates continue to move with the market until you actually lock with a specific lender for a specific loan.

How long can I lock a mortgage rate?

Common lock periods are 15, 30, 45, or 60 days, with longer options sometimes available — but not every lender offers every period, and longer locks can affect pricing or fees. Ask your lender directly what periods they offer and whether a longer lock costs more.

Can I change lenders after locking a rate?

In general you're not permanently bound to one lender, but switching after locking has real consequences — you may need to restart underwriting, pay for a new appraisal, and risk missing your original closing timeline. Whether it makes sense depends on your specific timing and qualification situation.

What happens if my rate lock expires?

This varies by lender — possible outcomes include an extension (sometimes for a fee), repricing at current market rates, or other lender-specific policies. This is especially worth asking about for new construction or any closing with an uncertain date. Ask directly: "What happens if my closing is delayed beyond the rate-lock expiration date, and who pays the extension cost?"

What is a mortgage float-down?

A float-down is an option some lenders offer that lets you take advantage of a rate drop after you've already locked, typically for a fee and sometimes only if rates move by a minimum amount. Not all lenders offer this, and terms vary — ask about the exact terms and cost before you lock, not after.

Is APR more important than interest rate?

Neither is "more important" on its own — they answer different questions. The interest rate determines the interest charged on the loan itself; the APR is designed to reflect the rate plus certain loan costs as an annualized figure, which can help with comparison. Use both alongside a full review of the Loan Estimate rather than relying on either number alone.

Are mortgage points worth paying?

It depends on how long you expect to keep the loan. Points cost money upfront in exchange for a lower rate, and it takes time for the lower monthly payment to recoup that upfront cost — the break-even point. If you expect to sell, refinance, or pay off the loan before that break-even, paying points may not pay off.

How many lenders should I compare?

Most guidance suggests getting quotes from at least a few lenders — banks, credit unions, mortgage lenders, and mortgage brokers can all be worth checking, since no single category is automatically cheapest. Compare actual Loan Estimates for the same loan amount, loan type, and lock period, ideally requested around the same time, since market pricing moves.

Can I negotiate mortgage rates and lender fees?

Many buyers do negotiate, particularly on lender-controlled fees and sometimes on rate itself, especially when you have competing offers in hand. Whether a specific lender is willing to negotiate, and how much room there is, varies — having a second Loan Estimate to compare against is generally what gives you leverage to ask.

Should I lock my rate on a new-construction home?

New construction adds a specific risk: the closing date itself can move if the build timeline shifts, which matters a lot for a rate lock with a fixed expiration. Ask specifically how the lender handles a construction-related delay, whether extensions are available, what they cost, and whether the lock period offered is realistic for your expected completion timeline.

HOME BUYER GUIDE

Mortgage Rates & Rate Locks: When Should You Lock Your Rate?

Q: What happens if rates fall after I lock?

It depends entirely on your lender and lock agreement. Some locks are fixed regardless of what the market does; others offer a float-down option, usually for a fee and sometimes requiring a minimum market move. Ask your lender before locking: "If market rates fall significantly after I lock, what options do I have?"

A practical chapter on rate locks, float-downs, points, credits, and how to actually compare lenders — not a guess about where rates are headed.

Current Mortgage Rate Trends

Loading current mortgage rate data…

Should I Lock My Rate?

There's no reliable way to know whether mortgage rates will rise or fall tomorrow — anyone claiming certainty about short-term rate direction is guessing. The decision is better based less on predicting the market and more on your closing date, the rate you can actually afford, the cost of the lock itself, your own risk tolerance, and your specific lender's lock terms.

Closing Date + Rate You Can Afford + Lock Cost + Risk Tolerance + Lender's Lock Terms

A buyer who already has an acceptable rate and can't comfortably absorb a meaningful increase may reasonably prioritize certainty by locking. A buyer with more financial flexibility, or a closing date that's still uncertain, may reasonably choose differently. Neither is wrong — they're different risk tolerances applied to the same uncertain market.

What Is a Mortgage Rate Lock?

A mortgage rate lock is an agreement under which a lender generally holds specified loan pricing for a defined period, subject to that lender's terms and your continued qualification. Common lock periods include:

15 days30 days45 days60 daysLonger locks where offered

Not every lender offers every lock period, and terms aren't identical across lenders. Longer locks can sometimes affect pricing or fees — ask directly rather than assuming.

When Should You Consider Locking?

Not a call on where rates are headed — a check on your own situation.

Reasons You May Consider Locking

→Closing date is reasonably certain
→Current payment fits your budget
→You don't want to risk a higher rate
→Market volatility makes you uncomfortable
→You have limited financial room if payments increase

Reasons to Ask More Questions First

→Closing date is uncertain
→Construction completion could move
→Lock may expire before closing
→You haven't compared lenders
→You don't understand points/credits
→You haven't reviewed extension fees
→You don't know whether the lender offers a float-down

What Happens If Rates Fall After I Lock?

The answer depends entirely on your lender and your specific lock agreement. Possible scenarios include:

→Your locked rate remains unchanged regardless of what the market does
→The lender offers a float-down option
→A float-down requires a fee
→A float-down may require a specific minimum market movement to qualify
→You could potentially change lenders — subject to timing, re-qualification, a new appraisal, and other real consequences

Ask before locking: "If market rates fall significantly after I lock, what options do I have?"

What Happens If the Lock Expires?

This is especially important to understand for new construction, delayed closings, and any transaction with an uncertain settlement date. Possible outcomes include:

→A lock extension
→An extension fee
→Repricing at current market rates
→Different policies depending on the lender

Ask: "What happens if my closing is delayed beyond the rate-lock expiration date, and who pays the extension cost?"

Don't Shop for Rate Alone

Rate ≠ Total Cost

A lender advertising a lower interest rate may charge discount points, origination charges, underwriting/lender fees, or other lender-controlled charges to get there. Another lender could offer a slightly higher rate paired with significant lender credits that offset your costs.

Compare equivalent loan structures — not advertisements.

How to Compare Mortgage Offers Correctly

Compare	Lender A	Lender B	Lender C
Loan amount	—	—	—
Loan type/term	—	—	—
Interest rate	—	—	—
APR	—	—	—
Points	—	—	—
Lender credits	—	—	—
Origination/lender fees	—	—	—
Estimated cash to close	—	—	—
Monthly principal & interest	—	—	—
Lock period	—	—	—
Lock expiration	—	—	—
Extension policy	—	—	—
Float-down available?	—	—	—

Compare offers for the same loan type, loan amount, and lock period — and preferably request them within the same day or time window, since market pricing can change between quotes.

Interest Rate vs. APR

Interest Rate primarily determines the interest charged on the loan itself.

APR is designed to reflect the interest rate plus certain loan costs, expressed as an annualized rate. It can help with comparison, but it shouldn't be your only decision factor — review the full Loan Estimate alongside it.

See the full APR definition and worked example in the glossary.

Mortgage Points

1 point = 1% of the loan amount. Paying points generally means paying more upfront in exchange for lower pricing or a lower rate, subject to the specific lender's offer.

Example — $500,000 mortgage

1 point = $5,000

Simple Break-Even Example

If paying additional points costs $5,000 and reduces the monthly payment by $100:

$5,000 ÷ $100 = 50 months

A simplified illustration, not a projection for any real loan. Buyers who expect to sell, refinance, or repay the loan before the break-even point should think carefully before paying substantial points.

Lender Credits

The opposite of points: a lender may provide a credit toward your closing costs in exchange for different loan pricing, potentially including a higher interest rate.

Lower upfront cost ↔ potentially higher ongoing borrowing cost

This can make sense depending on how long you expect to keep the mortgage. Neither points nor credits are universally the better choice — it depends on your own timeline.

Rate Lock Decision Framework

LOCK MAY DESERVE STRONG CONSIDERATION

Closing date is known, payment is affordable, pricing is competitive, you value certainty, and the lock covers your expected closing.

INVESTIGATE BEFORE LOCKING

Closing date is uncertain, or you haven't compared lenders, or you don't understand points/credits, or the lock may expire, or float-down/extension rules are unclear.

Don't ask only "Will rates go down?" Ask "What happens to me if rates go up?"

10 Questions to Ask Your Lender Before Locking

1What is my interest rate?
2What is the APR?
3Am I paying discount points?
4Am I receiving lender credits?
5What lender/origination fees am I paying?
6How long is this rate locked?
7What is the exact lock expiration date?
8What happens if closing is delayed?
9What happens if market rates fall after I lock?
10Do you offer a float-down, and what are its exact terms and costs?

Get the important terms in writing.

Rate Shopping Guidance

Consider getting comparable quotes from more than one source — banks, credit unions, mortgage lenders, and mortgage brokers can all be worth checking. No one category is automatically cheaper than another.

Compare the actual Loan Estimate and loan terms — not website advertisements or verbal quotes.

Mortgage Rate Comparison Calculator

Compare two loan offers side by side.

Home Price

Down Payment %

Loan Term (years)

Loan Amount

Loan A

Rate %

Points/Fees ($)

Monthly P&I$2335

Upfront points/fees$0

Est. interest over 30yr$480,583

Loan B

Rate %

Points/Fees ($)

Monthly P&I$2217

Upfront points/fees$5,000

Est. interest over 30yr$437,969

Monthly Payment Difference$118/mo (B is lower)

Potential Break-Even Period~42 months

Estimates only — principal & interest based on the inputs above. Excludes property taxes, homeowners insurance, HOA dues, mortgage insurance, and other costs unless you factor them in separately. Not a loan offer.

Want a full lock-vs-float scenario breakdown? Try the Rate Lock Scenario Calculator →

Buying a Home?

The mortgage rate is only one part of the financial decision. Use Reaixo to evaluate the property itself — potential costs, risks and other factors — before making a major home-buying decision.

Analyze a Property →

Frequently Asked Questions

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Disclaimer: This page is for informational and educational purposes only and does not constitute mortgage, lending, financial, legal, tax or investment advice. Mortgage rates, fees, lender credits, discount points, qualification requirements and rate-lock policies vary by lender, borrower, property, loan program and market conditions. Rate data displayed on this page may represent national averages or benchmarks and is not a loan offer or a rate available to any specific borrower. Always review your official Loan Estimate and rate-lock agreement and consult appropriate mortgage and financial professionals before making a decision. Reaixo reports are AI-assisted and provided for informational and educational purposes only. They are not appraisals, home inspections, engineering assessments, contractor estimates, legal advice, tax advice, lending decisions or financial advice. Property information, cost estimates and market assumptions may be incomplete or inaccurate and should be independently verified with qualified professionals.