Can CarMax Change Their Offer? What the 7-Day Offer Covers

Can CarMax change their offer? CarMax’s annual report says its no-haggle offer is good for seven days and that a free in-person appraisal ends in a written, guaranteed offer, but it does not say when a number can move between the online figure and the store. That gap is where most surprises happen. This guide separates what CarMax has published from what you need to confirm on your own offer, and shows how to protect the number you were quoted.

Understanding the CarMax Offer Lifecycle: From Online Guess to Final Price

CarMax’s Form 10-K for the fiscal year ended February 28, 2026 describes three separate ways it buys vehicles, and they are easy to mix up. The table below sets them side by side.

Offer type	Who it is for	What CarMax’s annual report says
Online instant appraisal offer	Consumers	Quickly gives a customer an offer on their vehicle.
In-person appraisal	Consumers	Free of charge, and CarMax makes a written, guaranteed offer whether or not the owner buys a vehicle from it.
MaxOffer	Licensed dealers	A digital appraisal product that gives dealers an instant offer good for seven days.

The same filing says CarMax’s no-haggle offer is good for seven days, and that it treats selling a vehicle to CarMax and buying one from CarMax as two distinct, independent transactions. The figures describe the business as of February 28, 2026, so check carmax.com for anything that has changed since.

The Initial Online Appraisal: Convenience Meets Caveats

An online instant offer takes the details you enter and returns a number quickly, before anyone has seen the car. That speed is the appeal, and it is also the limit: the figure can only be as accurate as the entries behind it.

Treat every entry as part of the offer. A mileage figure typed from memory, a dent left out of the condition questions, or an option the car does not have is a difference between the quote and the vehicle. Take a screenshot of each screen you complete and of the final offer page, including the date and any expiry shown. Those images are your record if the in-store number differs.

The Final, In-Person Inspection: Where Verification Happens

At a store, CarMax appraises the vehicle in person at no charge, per the annual report, and makes a written offer. That written offer is the document that matters. Ask for it on paper or by email, then compare its date, vehicle description, mileage and total against your screenshots before you decide anything.

The filing also explains why the vehicle itself drives the outcome. Of the roughly 1.1 million vehicles CarMax bought from consumers and dealers in fiscal 2026, about half met its retail standards, and CarMax says that is based on age, mileage or condition. The rest were sold to licensed dealers through its wholesale auctions. Age, mileage and condition are therefore the three factors CarMax itself names, and they are the ones to get right in your entries. For a deeper look at how a valuation is built, see how a CarMax appraisal works and what CarMax looks for.

Can CarMax Change Their Offer? What Can Move the Number

CarMax’s filing does not list every reason a number can change, and the terms on your offer control. What it does name is age, mileage and condition, and those map onto the places where an online entry and a real car most easily disagree. The table turns each one into a check you can finish before the appointment.

What can differ	Source of the factor	What to do before you go
Condition: dents, worn tires, warning lights	Named in CarMax’s annual report	Walk around the car, photograph damage, and measure tread depth. Answer the condition questions to match what you find.
Mileage	Named in CarMax’s annual report	Photograph the odometer the day you request the offer and again the day you drive in. Correct the entry if the numbers differ.
Age, model year and trim	Named in CarMax’s annual report	Confirm the year and trim against your registration or title so the quote describes the right car.
Loan balance and payoff	FTC guidance on negative equity	Ask your lender for a payoff figure good through the day you plan to sell.

Condition: What the Form Cannot See

Condition is the factor an online form is worst at capturing, because the questions are broad and the car is specific. Dents, scratches, stained seats, a check engine light and worn tires are all easy to rate as better than they are when you see the car every day.

Tires are the easiest item to turn into a number. A tread depth gauge reads in 32nds of an inch, and a color-coded one like the pick in the box above shows red for 0 to 3/32, yellow for 3/32 to 6/32 and green for 6/32 and up, according to the listing. Measure two or three spots across each tire, write the readings down, and rate the tires honestly in the form.

Mileage: Match the Odometer

Mileage is the second factor CarMax names, and it is the easiest to get exactly right. Read the odometer instead of estimating, and read it again before you leave for the store. If your online entry was a round number and the dash shows something higher, update the entry before the appointment. A mileage mismatch is a documented difference that no negotiating can explain away.

Answer questions about options and history the same way: an option that is not there, or an accident you leave out, is a gap between form and car. For a vehicle with damage, trading in a damaged car covers how buyers treat it.

Title, Loan and Payoff

A loan does not change what the car is worth, but it changes what you take home. The FTC explains negative equity with an example: a car worth $15,000 with an $18,000 loan leaves $3,000 owed. The FTC warns that a promise to pay off your loan may only roll that balance into your next loan, and that a dealer who says it will pay the balance itself while rolling it into financing is acting illegally.

Before you go, get a payoff figure from your lender, check that the name on the title matches your ID, and read how to sell a car with a loan still on it. If you owe more than the car is worth, trading in an upside-down car lays out the options. Once a sale is done, how to get your title from CarMax covers the paperwork that follows.

Can CarMax Increase Their Offer During the Inspection?

CarMax’s filing says nothing about in-person offers rising above the online number, and it describes the offer as no-haggle, so asking for a bump is not something to plan around. Corrections are different. If your entries undersold the car, a higher figure is reasonable: a trim level typed lower than the real one, an option left off, or mileage entered higher than the odometer shows.

The stronger lever is knowing the car’s value before you walk in. The FTC points to NADA Guides, Edmunds and Kelley Blue Book for checking what a vehicle is worth, and it notes that selling the car yourself might bring more than what a dealer says it is worth. If the in-store figure comes in low, written offers from other buyers are what let you decline calmly. Who pays more than CarMax lists other buyers to compare.

The Validity Period: How Long is the CarMax Offer Good For?

The 7-Day Offer Window

CarMax’s annual report states that its no-haggle offer is good for seven days. The report does not say how the days are counted, whether the day you receive the offer counts, or whether an offer can be extended. Use the expiry date printed on your own offer, not a calendar guess.

1. Screenshot the offer page the moment you receive it, with the date and expiry visible.
2. Book the appointment with at least a day to spare, so a missed slot does not cost you the offer.
3. If the date has passed, assume a fresh appraisal is needed and ask the store to reissue the figure before you travel.

New damage or a different odometer reading has the same effect as a lapsed date: the offer on paper no longer describes the car you are bringing, so update the entry and ask for a reissued figure.

What Is CarMax MaxOffer, and Is It the Same as My Offer?

No. According to the annual report, MaxOffer is CarMax’s digital appraisal product for licensed dealers and gives a dealer an instant offer good for seven days. A person selling a personal car uses the consumer instant offer or an in-person appraisal. If you see a figure labeled MaxOffer, confirm which product it comes from before you rely on it.

Action Plan: What To Do If CarMax Lowers Your Offer

If the store figure comes in lower than the online number, slow down. You have a record, a time window and the option to leave.

Step 1: Request Specific Justifications

Ask which items account for the difference, and ask for them on the written offer. A single lump reduction is hard to check. A list of items lets you compare each one with your screenshots and photos.

Step 2: Compare Deductions to Your Self-Appraisal

Set the list beside your entries. If a deduction is for something you already knew about, it was a gap in the form. If it is for something that happened after you requested the offer, such as new damage, say when it occurred. If a deduction contradicts your photos or odometer image, show them.

Step 3: Be Prepared to Walk Away

Per the annual report, the in-person appraisal is free and the offer does not depend on buying a vehicle, so declining costs you no purchase. Confirm on your paperwork that no other fee applies. With other written offers in hand, leaving is a real option rather than a bluff.

Before You Hand Over the Keys

If you do sell, clear your data first. The FTC lists what to remove: phone contacts, saved addresses and routes in the navigation system, garage door codes, music and app log-ins. Disconnect the manufacturer’s app from the car, and cancel or transfer subscriptions such as satellite radio. The owner’s manual or the manufacturer’s website explains how to reset the system.

CarMax Offer vs. Other Selling Avenues

Whether a changed offer is acceptable depends on what else you could do with the car. The table compares the three routes using only what the sources above state.

Selling route	What the sources say	What to watch
CarMax written offer	Free in-person appraisal, written guaranteed offer, not tied to buying a vehicle, good for seven days (annual report).	Confirm the terms and any fees on the offer itself.
Trade-in at a dealer	The FTC advises checking value first and asking how negative equity will be handled.	A balance rolled into the new loan raises what you owe and the interest you pay.
Selling it yourself	The FTC says you might get more than a dealer’s figure.	Finding a buyer, taking payment and handling paperwork and any lender payoff are your job.

FAQ: Common Questions About CarMax Offers

How long is a CarMax offer good for?

CarMax’s annual report for the fiscal year ended February 28, 2026 says its no-haggle offer is good for seven days. The filing does not explain how the days are counted, so use the expiry date printed on your own offer.

Can CarMax lower its online offer after an in-person appraisal?

CarMax’s annual report describes the online instant appraisal offer and the in-person written offer as separate steps and does not list when a number can move. Any difference between what you entered and the car in the store gives a buyer a reason to re-price, so read the terms shown with your offer and keep screenshots of your entries.

Does a CarMax appraisal cost anything?

Per the annual report, CarMax appraises a customer’s vehicle in person free of charge and makes a written, guaranteed offer. Confirm on your paperwork that no other fee applies before you sign.

Do I have to buy a car from CarMax to sell mine?

No. The annual report says CarMax makes its written, guaranteed offer whether or not the owner is buying a vehicle from it, and that selling and buying are two distinct, independent transactions.

What if I owe more on my loan than the car is worth?

That gap is called negative equity. The FTC explains that a buyer’s promise to pay off the loan may simply roll the balance into your next loan, so get the payoff figure from your lender and ask how any shortfall is handled in writing.

Conclusion: Protect the Number in Writing

The published facts are narrow and useful: a free in-person appraisal, a written guaranteed offer, selling and buying as separate deals, and a no-haggle offer good for seven days. When a figure can move depends on the terms shown with your offer. Keep screenshots, match the odometer, get a payoff figure if you have a loan, and compare other written offers.

This guide does not cover CarMax’s current terms or fees, state title and sales-tax rules, or the value of a specific vehicle. Confirm CarMax’s terms on carmax.com and on your written offer, and check your state DMV for title requirements. This is general information, not legal or financial advice.