Exhibit 99.1
MONTHLY SERVICER'S CERTIFICATE
CARMAX BUSINESS SERVICES, LLC
CARMAX AUTO OWNER TRUST
SERIES 2026-1
Collection Period07/01/26-07/31/26
Determination Date8/10/2026
Distribution Date8/17/2026
Additional information, including defined terms, can be found in the prospectus on the SEC's EDGAR system (http://www.sec.gov) under File No. 333-288943-03.




Pool Balance
1.Pool Balance on the close of the last day of the preceding Collection Period$1,027,379,369.36 
2.Collections allocable to Principal$40,423,159.61 
3.Purchase Amount allocable to Principal$0.00 
4.Defaulted Receivables$591,196.34 
5.Pool Balance on the close of the last day of the related Collection Period$986,365,013.41 
(Ln1 - Ln2 - Ln3 - Ln4)
6.Total number of Receivables outstanding on the close of the last day of the related Collection Period62,261 
7.Initial Pool Balance$1,306,533,362.66 
Beginning of PeriodEnd of Period
8.Note Balances
a. Class A-1 Note Balance
$37,846,702.55 $0.00 
b. Class A-2a Note Balance$250,000,000.00 $248,116,734.01 
c. Class A-2b Floating Rate Note Balance$170,500,000.00 $169,215,612.59 
d. Class A-3 Note Balance$420,500,000.00 $420,500,000.00 
e. Class A-4 Note Balance$85,160,000.00 $85,160,000.00 
f. Class B Note Balance$26,130,000.00 $26,130,000.00 
g. Class C Note Balance$17,640,000.00 $17,640,000.00 
h. Class D Note Balance$13,070,000.00 $13,070,000.00 
i. Note Balance (sum a - h)$1,020,846,702.55 $979,832,346.60 
9.Pool Factors
a. Class A-1 Note Pool Factor0.1193902 0.0000000 
b. Class A-2a Note Pool Factor1.0000000 0.9924669 
c. Class A-2b Floating Rate Note Pool Factor1.0000000 0.9924669 
d. Class A-3 Note Pool Factor1.0000000 1.0000000 
e. Class A-4 Note Pool Factor1.0000000 1.0000000 
f. Class B Note Pool Factor1.0000000 1.0000000 
g. Class C Note Pool Factor1.0000000 1.0000000 
h. Class D Note Pool Factor1.0000000 1.0000000 
i. Note Pool Factor0.7852667 0.7537172 
10.Overcollateralization Target Amount6,532,666.81 
11.Current overcollateralization amount (Pool Balance - Note Balance)6,532,666.81 
12.Weighted Average Coupon8.86 %
13.Weighted Average Original Termmonths67.36 
14.Weighted Average Remaining Termmonths54.04 
15.30 day Average SOFR for the accrual period ending 8/16/20263.62539 %
16.Note Rate applicable to the Class A-2b notes for the interest period ending 8/16/20263.99539 %
Collections
17.Finance Charges:
a. Collections allocable to Finance Charge$7,665,740.51 
b. Liquidation Proceeds allocable to Finance Charge$996.17 
c. Purchase Amount allocable to Finance Charge$0.00 
d. Available Finance Charge Collections (sum a - c)$7,666,736.68 
18.Principal:
a. Collections allocable to Principal$40,423,159.61 
b. Liquidation Proceeds allocable to Principal$419,146.79 
c. Purchase Amount allocable to Principal$0.00 
d. Available Principal Collections (sum a - c)$40,842,306.40 
19.Total Finance Charge and Principal Collections (17d + 18d)$48,509,043.08 
20.Interest Income from Collection Account$123,091.71 
21.Simple Interest Advances$0.00 
22.Available Collections (Ln19 + 20 + 21)$48,632,134.79 



Available Funds
23.Available Collections$48,632,134.79 
24.Reserve Account Draw Amount$0.00 
25.Available Funds$48,632,134.79 
Application of Available Funds
26.Servicing Fee0.15 %
a. Monthly Servicing Fee$856,149.47 
b. Amount Unpaid from Prior Months$0.00 
c. Amount Paid$856,149.47 
d. Shortfall Amount (a + b - c)$0.00 
27.Unreimbursed Servicer Advances$0.00 
28.Successor Servicer and Asset Representations Reviewer Unpaid Expenses and Indemnity Amounts
a. Successor Servicer Unpaid Transition Expenses and Indemnity Amounts (Capped at $175,000 annually)$0.00 
b. Successor Servicer Amount Paid$0.00 
c. Successor Servicer Shortfall Amount (a - b)$0.00 
d. Asset Representations Reviewer Fees, Expenses and Indemnity Amounts (Capped at $175,000 annually)$0.00 
e. Asset Representations Reviewer Amount Paid$0.00 
f. Asset Representations Reviewer Shortfall Amount (d - e)$0.00 
29.Class A Noteholder Interest Amounts
a. Class A-1 Monthly Interest$132,040.84 
b. Additional Note Interest related to Class A-1 Monthly Interest$0.00 
c. Interest Due on Additional Note Interest related to Class A-1 Monthly Interest$0.00 
d. Total Class A-1 Note Interest (sum a - c)$132,040.84 
e. Class A-2a Monthly Interest$806,250.00 
f. Additional Note Interest related to Class A-2a Monthly Interest$0.00 
g. Interest Due on Additional Note Interest related to Class A-2a Monthly Interest$0.00 
h. Total Class A-2a Note Interest (sum e - g)$806,250.00 
i. Class A-2b Monthly Interest$624,446.16 
j. Additional Note Interest related to Class A-2b Monthly Interest$0.00 
k. Interest Due on Additional Note Interest related to Class A-2b Monthly Interest$0.00 
l. Total Class A-2b Note Interest (sum i - k)$624,446.16 
m. Class A-3 Monthly Interest$1,415,683.33 
n. Additional Note Interest related to Class A-3 Monthly Interest$0.00 
o. Interest Due on Additional Note Interest related to Class A-3 Monthly Interest$0.00 
p. Total Class A-3 Note Interest (sum m - o)$1,415,683.33 
q. Class A-4 Monthly Interest$296,640.67 
r. Additional Note Interest related to Class A-4 Monthly Interest$0.00 
r. Additional Note Interest related to Class A-4 Monthly Interest$0.00 
t. Total Class A-4 Note Interest (sum q - s)$296,640.67 
30.Priority Principal Distributable Amount$0.00 
31.Class B Noteholder Interest Amount
a. Class B Monthly Interest$93,632.50 
b. Additional Note Interest related to Class B Monthly Interest$0.00 
c. Interest Due on Additional Note Interest related to Class B Monthly Interest$0.00 
d. Total Class B Note Interest (sum a - c)$93,632.50 
32.Secondary Principal Distributable Amount$3,771,689.14 
33.Class C Noteholder Interest Amount
a. Class C Monthly Interest$66,738.00 
b. Additional Note Interest related to Class C Monthly Interest$0.00 
c. Interest Due on Additional Note Interest related to Class C Monthly Interest$0.00 
d. Total Class C Note Interest (sum a - c)$66,738.00 
34.Tertiary Principal Distributable Amount$17,640,000.00 
35.Class D Noteholder Interest Amount
a. Class D Monthly Interest$53,695.92 
b. Additional Note Interest related to Class D Monthly Interest$0.00 
c. Interest Due on Additional Note Interest related to Class D Monthly Interest$0.00 
d. Total Class D Note Interest (sum a - c)$53,695.92 



36.Quaternary Principal Distributable Amount$13,070,000.00 
37.Required Payment Amount (Ln 26 + Ln 28 + (sum of Ln 29 through Ln 36))$38,826,966.03 
38.Reserve Account Deficiency$0.00 
39.Regular Principal Distributable Amount$6,532,666.81 
40.Remaining Unpaid Servicer Transition Expenses and Additional Servicing Fees, if any$0.00 
41.Remaining Unpaid Trustee and Asset Representations Reviewer Fees, Expenses and Indemnity Amounts, if any
a. Remaining Unpaid Trustee Fees, Expenses and Indemnity Amounts$0.00 
b. Remaining Unpaid Asset Representations Reviewer Fees, Expenses and Indemnity Amounts$0.00 
42.Remaining Unpaid Successor Servicer Indemnity Amounts, if any$0.00 
Collection Account Activity0.15 %
43.Deposits
a. Total Daily Deposits of Finance Charge Collections$7,666,736.68 
b. Total Daily Deposits of Principal Collections$40,842,306.40 
c. Withdrawal from Reserve Account$0.00 
d. Interest Income$123,091.71 
e. Total Deposits to Collection Account (sum a - d)$48,632,134.79 
44.Withdrawals
a. Servicing Fee and Unreimbursed Servicer Advances$856,149.47 
b. Successor Servicer Transition Expenses and Indemnity Amounts$0.00 
c. Deposit to Note Payment Account for Monthly Note Interest/Principal$44,503,483.37 
d. Deposit to Reserve Account$0.00 
e. Excess Collections (Deposit to Certificate Payment Account for payment to Certificateholder)$3,272,501.95 
f. Total Withdrawals from Collection Account (sum a - e)$48,632,134.79 
Note Payment Account Activity
45.Deposits
a. Class A-1 Interest Distribution$132,040.84 
b. Class A-2a Interest Distribution$806,250.00 
c. Class A-2b Interest Distribution$624,446.16 
d. Class A-3 Interest Distribution$1,415,683.33 
e. Class A-4 Interest Distribution$296,640.67 
f. Class B Interest Distribution$93,632.50 
g. Class C Interest Distribution$66,738.00 
h. Class D Interest Distribution$53,695.92 
i. Class A-1 Principal Distribution$37,846,702.55 
j. Class A-2a Principal Distribution$1,883,265.99 
k. Class A-2b Principal Distribution$1,284,387.41 
l. Class A-3 Principal Distribution$0.00 
m. Class A-4 Principal Distribution$0.00 
n. Class B Principal Distribution$0.00 
o. Class C Principal Distribution$0.00 
p. Class D Principal Distribution$0.00 
q. Total Deposits to Note Payment Account (sum a - p)$44,503,483.37 
46.Withdrawals
a. Class A-1 Distribution$37,978,743.39 
b. Class A-2a Distribution$2,689,515.99 
c. Class A-2b Distribution$1,908,833.57 
d. Class A-3 Distribution$1,415,683.33 
e. Class A-4 Distribution$296,640.67 
f. Class B Distribution$93,632.50 
g. Class C Distribution$66,738.00 
h. Class D Distribution$53,695.92 
i. Total Withdrawals from Note Payment Account (sum a - h)$44,503,483.37 



Certificate Payment Account Activity
47.Deposits to Certificate Payment Account from Excess Collections$3,272,501.95 
48.Withdrawals from Certificate Payment Account for Certificateholder Distribution$3,272,501.95 
Required Reserve Account Amount0.15 %
49.Required Reserve Account Amount (1.00% of Initial Pool Balance)$3,266,333.41 
Reserve Account Reconciliation
50.Beginning Balance (as of end of preceding Distribution Date)$3,266,333.41 
51.Investment Earnings$9,764.90 
52.Reserve Account Draw Amount$0.00 
53.Reserve Account Amount (Ln 50 + Ln 51 - Ln 52)$3,276,098.31 
54.Deposit from Available Funds (Ln 44d)$0.00 
55.If Reserve Account Balance exceeds Required Reserve Account Amount, payment to
a. the Note Payment Account for the payment of principal to the extent of any unfunded Regular Principal Distribution Amount; and$0.00 
b. any Successor Servicer for the payment of any unfunded Transition Costs and Additional Servicing Fee$0.00 
56.Payment to Depositor if Reserve Account Balance exceeds Required Reserve Account Amount and to the extent no unfunded amounts described in Ln 55 exist$9,764.90 
57.Ending Balance (Ln53 + Ln54 - Ln55 - Ln56)$3,266,333.41 
58.Reserve Account Deficiency (Ln50 - Ln57)$0.00 
Instructions to the Trustee
59.Amount to be deposited from the Reserve Account into the Collection Account$0.00 
60.Amount to be paid to Servicer from the Collection Account$856,149.47 
61.Amount to be deposited from the Collection Account into the Note Payment Account$44,503,483.37 
62.Amount to be deposited from the Collection Account into the Certificate Payment Account$3,272,501.95 
63.Amount to be deposited from the Collection Account into the Reserve Account$0.00 
64.Amount to be deposited from the Reserve Account, if Reserve Account Balance exceeds Required Reserve Account Amount, into
a. the Note Payment Account for any unfunded Regular Principal Distributable Amount$0.00 
b. the Depositor, if no unfunded Regular Principal distributable amount exists$9,764.90 
65.Amount to be paid to Class A-1 Noteholders from the Note Payment Account$37,978,743.39 
66.Amount to be paid to Class A-2a Noteholders from the Note Payment Account$2,689,515.99 
67.Amount to be paid to Class A-2b Noteholders from the Note Payment Account$1,908,833.57 
68.Amount to be paid to Class A-3 Noteholders from the Note Payment Account$1,415,683.33 
69.Amount to be paid to Class A-4 Noteholders from the Note Payment Account$296,640.67 
70.Amount to be paid to Class B Noteholders from the Note Payment Account$93,632.50 
71.Amount to be paid to Class C Noteholders from the Note Payment Account$66,738.00 
72.Amount to be paid to Class D Noteholders from the Note Payment Account$53,695.92 
73.Amount to be paid to Certificateholders from the Certificate Payment Account with respect to Excess Collections$3,272,501.95 



Delinquency Activity
Number of LoansPrincipal Balance
74.Delinquency Analysis
a. 31 to 60 days past due461$6,460,191.67 
b. 61 to 90 days past due162$2,238,196.32 
c. 91 to 120 days past due54$874,674.33 
d. 121 or more days past due0$0.00 
e. Total Past Due (sum a - d)677$9,573,062.32 
f. Delinquent Loans as a percentage of end of period Pool Balance (Ln 74e / Ln 5)0.9705 %
75.Has a Delinquency Trigger Event occurred?No
Loss Activity
Number of LoansPrincipal Balance
76.Defaulted Receivables (charge-offs)43$591,196.34 
77.Recoveries51$420,142.96 
78.Net Losses (Ln 76 - Ln 77)$171,053.38 
79.Ratio of Net Losses to Beginning of Period Pool Balance (Ln 78 / Ln 1)0.0166 %
Cumulative Loss Activity
Number of LoansPrincipal Balance
80.Defaulted Receivables (charge-offs)174$3,177,053.36 
81.Recoveries111$1,212,706.27 
82.Cumulative Net Losses (Ln 80 - Ln 81)$1,964,347.09 
83.Ratio of Cumulative Net Losses to Initial Pool Balance (Ln 82 / Ln 7)0.1503 %
84.Average Net Loss on Defaulted Receivables$11,289.35 
Other Servicing Information
85.Principal Balance of Receivables extended during the Collection Period$5,142,586.64 
86.Pool Balance on the close of the last day of the preceding Collection Period$1,027,379,369.36 
87.Ratio of extensions to pool balance (Ln 85 / Ln 86)0.50 %




IN WITNESS WHEREOF, the undersigned has duly executed this certificate on August 10, 2026
 
CARMAX BUSINESS SERVICES, LLC
As Servicer
By:/s/ Greg Dostich
Name:Greg Dostich
Title:Vice President and Treasurer