Exhibit 99.1
MONTHLY SERVICER'S CERTIFICATE
CARMAX BUSINESS SERVICES, LLC
CARMAX AUTO OWNER TRUST
SERIES 2026-1
Collection Period05/01/26-05/31/26
Determination Date6/9/2026
Distribution Date6/15/2026
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$1,110,951,580.69 
2.Collections allocable to Principal$42,057,519.51 
3.Purchase Amount allocable to Principal$0.00 
4.Defaulted Receivables$719,170.61 
5.Pool Balance on the close of the last day of the related Collection Period$1,068,174,890.57 
(Ln1 - Ln2 - Ln3 - Ln4)
6.Total number of Receivables outstanding on the close of the last day of the related Collection Period68,226 
7.Initial Pool Balance$1,306,533,362.66 
Beginning of PeriodEnd of Period
8.Note Balances
a. Class A-1 Note Balance
$121,418,913.88 $78,642,223.76 
b. Class A-2a Note Balance$250,000,000.00 $250,000,000.00 
c. Class A-2b Floating Rate Note Balance$170,500,000.00 $170,500,000.00 
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)$1,104,418,913.88 $1,061,642,223.76 
9.Pool Factors
a. Class A-1 Note Pool Factor0.3830250 0.2480827 
b. Class A-2a Note Pool Factor1.0000000 1.0000000 
c. Class A-2b Floating Rate Note Pool Factor1.0000000 1.0000000 
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 Factor0.8495530 0.8166479 
10.Overcollateralization Target Amount6,532,666.81 
11.Current overcollateralization amount (Pool Balance - Note Balance)6,532,666.81 
12.Weighted Average Coupon8.84 %
13.Weighted Average Original Termmonths67.32 
14.Weighted Average Remaining Termmonths55.33 
15.30 day Average SOFR for the accrual period ending 6/14/20263.64285 %
16.Note Rate applicable to the Class A-2b notes for the interest period ending 6/14/20264.01285 %
Collections
17.Finance Charges:
a. Collections allocable to Finance Charge$8,149,604.19 
b. Liquidation Proceeds allocable to Finance Charge$314.24 
c. Purchase Amount allocable to Finance Charge$0.00 
d. Available Finance Charge Collections (sum a - c)$8,149,918.43 
18.Principal:
a. Collections allocable to Principal$42,057,519.51 
b. Liquidation Proceeds allocable to Principal$174,719.12 
c. Purchase Amount allocable to Principal$0.00 
d. Available Principal Collections (sum a - c)$42,232,238.63 
19.Total Finance Charge and Principal Collections (17d + 18d)$50,382,157.06 
20.Interest Income from Collection Account$134,127.73 
21.Simple Interest Advances$0.00 
22.Available Collections (Ln19 + 20 + 21)$50,516,284.79 



Available Funds
23.Available Collections$50,516,284.79 
24.Reserve Account Draw Amount$0.00 
25.Available Funds$50,516,284.79 
Application of Available Funds
26.Servicing Fee0.15 %
a. Monthly Servicing Fee$925,792.98 
b. Amount Unpaid from Prior Months$0.00 
c. Amount Paid$925,792.98 
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$397,937.00 
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)$397,937.00 
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$589,164.41 
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)$589,164.41 
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$5,534,023.31 
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))$40,889,558.12 
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$8,149,918.43 
b. Total Daily Deposits of Principal Collections$42,232,238.63 
c. Withdrawal from Reserve Account$0.00 
d. Interest Income$134,127.73 
e. Total Deposits to Collection Account (sum a - d)$50,516,284.79 
44.Withdrawals
a. Servicing Fee and Unreimbursed Servicer Advances$925,792.98 
b. Successor Servicer Transition Expenses and Indemnity Amounts$0.00 
c. Deposit to Note Payment Account for Monthly Note Interest/Principal$46,496,431.95 
d. Deposit to Reserve Account$0.00 
e. Excess Collections (Deposit to Certificate Payment Account for payment to Certificateholder)$3,094,059.86 
f. Total Withdrawals from Collection Account (sum a - e)$50,516,284.79 
Note Payment Account Activity
45.Deposits
a. Class A-1 Interest Distribution$397,937.00 
b. Class A-2a Interest Distribution$806,250.00 
c. Class A-2b Interest Distribution$589,164.41 
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$42,776,690.12 
j. Class A-2a Principal Distribution$0.00 
k. Class A-2b Principal Distribution$0.00 
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)$46,496,431.95 
46.Withdrawals
a. Class A-1 Distribution$43,174,627.12 
b. Class A-2a Distribution$806,250.00 
c. Class A-2b Distribution$589,164.41 
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)$46,496,431.95 



Certificate Payment Account Activity
47.Deposits to Certificate Payment Account from Excess Collections$3,094,059.86 
48.Withdrawals from Certificate Payment Account for Certificateholder Distribution$3,094,059.86 
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$9,724.26 
52.Reserve Account Draw Amount$0.00 
53.Reserve Account Amount (Ln 50 + Ln 51 - Ln 52)$3,276,057.67 
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$9,724.26 
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$925,792.98 
61.Amount to be deposited from the Collection Account into the Note Payment Account$46,496,431.95 
62.Amount to be deposited from the Collection Account into the Certificate Payment Account$3,094,059.86 
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$9,724.26 
65.Amount to be paid to Class A-1 Noteholders from the Note Payment Account$43,174,627.12 
66.Amount to be paid to Class A-2a Noteholders from the Note Payment Account$806,250.00 
67.Amount to be paid to Class A-2b Noteholders from the Note Payment Account$589,164.41 
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$3,094,059.86 



Delinquency Activity
Number of LoansPrincipal Balance
74.Delinquency Analysis
a. 31 to 60 days past due458$6,129,444.27 
b. 61 to 90 days past due140$2,122,834.73 
c. 91 to 120 days past due42$863,830.08 
d. 121 or more days past due0$0.00 
e. Total Past Due (sum a - d)640$9,116,109.08 
f. Delinquent Loans as a percentage of end of period Pool Balance (Ln 74e / Ln 5)0.8534 %
75.Has a Delinquency Trigger Event occurred?No
Loss Activity
Number of LoansPrincipal Balance
76.Defaulted Receivables (charge-offs)39$719,170.61 
77.Recoveries27$175,033.36 
78.Net Losses (Ln 76 - Ln 77)$544,137.25 
79.Ratio of Net Losses to Beginning of Period Pool Balance (Ln 78 / Ln 1)0.0490 %
Cumulative Loss Activity
Number of LoansPrincipal Balance
80.Defaulted Receivables (charge-offs)85$1,756,188.46 
81.Recoveries46$573,053.29 
82.Cumulative Net Losses (Ln 80 - Ln 81)$1,183,135.17 
83.Ratio of Cumulative Net Losses to Initial Pool Balance (Ln 82 / Ln 7)0.0906 %
84.Average Net Loss on Defaulted Receivables$13,919.24 
Other Servicing Information
85.Principal Balance of Receivables extended during the Collection Period$3,374,683.42 
86.Pool Balance on the close of the last day of the preceding Collection Period$1,110,951,580.69 
87.Ratio of extensions to pool balance (Ln 85 / Ln 86)0.30 %




IN WITNESS WHEREOF, the undersigned has duly executed this certificate on June 09, 2026
 
CARMAX BUSINESS SERVICES, LLC
 
As Servicer
By:/s/ Greg Dostich
Name:Greg Dostich
Title:Vice President and Treasurer