Exhibit 99.1
MONTHLY SERVICER'S CERTIFICATE
CARMAX BUSINESS SERVICES, LLC
CARMAX SELECT RECEIVABLES TRUST
SERIES 2026-B
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. 333-288943-06.




Pool Balance
1.Pool Balance on the close of the last day of the preceding Collection Period$606,660,462.96 
2.Collections allocable to Principal$15,861,774.50 
3.Purchase Amount allocable to Principal$0.00 
4.Defaulted Receivables$151,672.17 
5.Pool Balance on the close of the last day of the related Collection Period$590,647,016.29 
(Ln1 - Ln2 - Ln3 - Ln4)
6.Total number of Receivables outstanding on the close of the last day of the related Collection Period30,967 
7.Initial Pool Balance$621,762,247.08 
Beginning of PeriodEnd of Period
8.Note Balances
a. Class A-1 Note Balance
$70,386,378.22 $49,529,412.67 
b. Class A-2 Note Balance$170,285,000.00 $170,285,000.00 
c. Class A-3 Note Balance$170,285,000.00 $170,285,000.00 
d. Class B Note Balance$40,410,000.00 $40,410,000.00 
e. Class C Note Balance$55,960,000.00 $55,960,000.00 
f. Class D Note Balance$48,190,000.00 $48,190,000.00 
g. Class E Note Balance$24,870,000.00 $24,870,000.00 
h. Note Balance (sum a - g)$580,386,378.22 $559,529,412.67 
9.Pool Factors
a. Class A-1 Note Pool Factor0.7820709 0.5503268 
b. Class A-2 Note Pool Factor1.0000000 1.0000000 
c. Class A-3 Note Pool Factor1.0000000 1.0000000 
d. Class B Note Pool Factor1.0000000 1.0000000 
e. Class C Note Pool Factor1.0000000 1.0000000 
f. Class D Note Pool Factor1.0000000 1.0000000 
g. Class E Note Pool Factor1.0000000 1.0000000 
h. Note Pool Factor0.9673106 0.9325490 
10.Overcollateralization Target Amount$59,064,701.63 
11.Current overcollateralization amount (Pool Balance - Note Balance)$31,117,603.62 
12.Weighted Average Coupon16.36 %
13.Weighted Average Original Termmonths70.15 
14.Weighted Average Remaining Termmonths61.79 
Collections
15.Finance Charges:
a. Collections allocable to Finance Charge$8,267,041.80 
b. Liquidation Proceeds allocable to Finance Charge$0.00 
c. Purchase Amount allocable to Finance Charge$0.00 
d. Available Finance Charge Collections (sum a - c)$8,267,041.80 
16.Principal:
a. Collections allocable to Principal$15,861,774.50 
b. Liquidation Proceeds allocable to Principal$116,207.69 
c. Purchase Amount allocable to Principal$0.00 
d. Available Principal Collections (sum a - c)$15,977,982.19 
17.Total Finance Charge and Principal Collections (15d + 16d)$24,245,023.99 
18.Interest Income from Collection Account$57,761.68 
19.Simple Interest Advances$0.00 
20.Available Collections (Ln17 + 18 + 19)$24,302,785.67 



Available Funds
21.Available Collections$24,302,785.67 
22.Reserve Account Draw Amount$0.00 
23.Available Funds$24,302,785.67 
Application of Available Funds
24.Servicing Fee0.15 %
a. Monthly Servicing Fee$1,137,488.37 
b. Amount Unpaid from Prior Months$0.00 
c. Amount Paid$1,137,488.37 
d. Shortfall Amount (a + b - c)$0.00 
25.Unreimbursed Servicer Advances$0.00 
26.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 
27.Class A Noteholder Interest Amounts
a. Class A-1 Monthly Interest$259,373.80 
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)$259,373.80 
e. Class A-2 Monthly Interest$617,283.13 
f. Additional Note Interest related to Class A-2 Monthly Interest$0.00 
g. Interest Due on Additional Note Interest related to Class A-2 Monthly Interest$0.00 
h. Total Class A-2 Note Interest (sum e - g)$617,283.13 
i. Class A-3 Monthly Interest$658,435.33 
j. Additional Note Interest related to Class A-3 Monthly Interest$0.00 
k. Interest Due on Additional Note Interest related to Class A-3 Monthly Interest$0.00 
l. Total Class A-3 Note Interest (sum i - k)$658,435.33 
28.Priority Principal Distributable Amount$0.00 
29.Class B Noteholder Interest Amount
a. Class B Monthly Interest$164,334.00 
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)$164,334.00 
30.Secondary Principal Distributable Amount$0.00 
31.Class C Noteholder Interest Amount
a. Class C Monthly Interest$242,027.00 
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)$242,027.00 
32.Tertiary Principal Distributable Amount$0.00 
33.Class D Noteholder Interest Amount
a. Class D Monthly Interest$232,918.33 
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)$232,918.33 
34.Quaternary Principal Distributable Amount$0.00 
35.Class E Noteholder Interest Amount
a. Class E Monthly Interest$152,536.00 
b. Additional Note Interest related to Class E Monthly Interest$0.00 
c. Interest Due on Additional Note Interest related to Class E Monthly Interest$0.00 
d. Total Class E Note Interest (sum a - c)$152,536.00 



36.Quinary Principal Distributable Amount$0.00 
37.Required Payment Amount (Ln 24 + Ln 26 + (sum of Ln 27 through Ln 36))$3,464,395.96 
38.Reserve Account Deficiency$0.00 
39.Regular Principal Distributable Amount$48,804,063.56 
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$8,267,041.80 
b. Total Daily Deposits of Principal Collections$15,977,982.19 
c. Withdrawal from Reserve Account$0.00 
d. Interest Income$57,761.68 
e. Total Deposits to Collection Account (sum a - d)$24,302,785.67 
44.Withdrawals
a. Servicing Fee and Unreimbursed Servicer Advances$1,137,488.37 
b. Successor Servicer Transition Expenses and Indemnity Amounts$0.00 
c. Deposit to Note Payment Account for Monthly Note Interest/Principal$23,165,297.30 
d. Deposit to Reserve Account$0.00 
e. Excess Collections (Deposit to Certificate Payment Account for payment to Certificateholder)$0.00 
f. Total Withdrawals from Collection Account (sum a - e)$24,302,785.67 
Note Payment Account Activity
45.Deposits
a. Class A-1 Interest Distribution$259,373.80 
b. Class A-2 Interest Distribution$617,283.13 
c. Class A-3 Interest Distribution$658,435.33 
d. Class B Interest Distribution$164,334.00 
e. Class C Interest Distribution$242,027.00 
f. Class D Interest Distribution$232,918.33 
g. Class E Interest Distribution$152,536.00 
h. Class A-1 Principal Distribution$20,856,965.55 
i. Class A-2 Principal Distribution$0.00 
j. Class A-3 Principal Distribution$0.00 
k. Class B Principal Distribution$0.00 
l. Class C Principal Distribution$0.00 
m. Class D Principal Distribution$0.00 
n. Class E Principal Distribution$0.00 
o. Total Deposits to Note Payment Account (sum a - n)$23,183,873.14 
46.Withdrawals
a. Class A-1 Distribution$21,116,339.35 
b. Class A-2 Distribution$617,283.13 
d. Class A-3 Distribution$658,435.33 
e. Class B Distribution$164,334.00 
f. Class C Distribution$242,027.00 
g. Class D Distribution$232,918.33 
h. Class E Distribution$152,536.00 
i. Total Withdrawals from Note Payment Account (sum a - g)$23,183,873.14 



Certificate Payment Account Activity
47.Deposits to Certificate Payment Account from Excess Collections$0.00 
48.Withdrawals from Certificate Payment Account for Certificateholder Distribution$0.00 
Required Reserve Account Amount0.15 %
49.Required Reserve Account Amount (1.00% of Initial Pool Balance)$6,217,622.47 
Reserve Account Reconciliation
50.Beginning Balance (as of end of preceding Distribution Date)$6,217,622.47 
51.Investment Earnings$18,575.84 
52.Reserve Account Draw Amount$0.00 
53.Reserve Account Amount (Ln 50 + Ln 51 - Ln 52)$6,236,198.31 
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$18,575.84 
b. any Successor Servicer for the payment of any unfunded Transition Costs and Additional Servicing Fee$0.00 
56.Payment to Certificateholders if Reserve Account Balance exceeds Required Reserve Account Amount and to the extent no unfunded amounts described in Ln 55 exist$0.00 
57.Ending Balance (Ln53 + Ln54 - Ln55 - Ln56)$6,217,622.47 
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$1,137,488.37 
61.Amount to be deposited from the Collection Account into the Note Payment Account$23,165,297.30 
62.Amount to be deposited from the Collection Account into the Certificate Payment Account$0.00 
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$18,575.84 
b. the Certificateholders, if no unfunded Regular Principal distributable amount exists$0.00 
65.Amount to be paid to Class A-1 Noteholders from the Note Payment Account$21,116,339.35 
66.Amount to be paid to Class A-2 Noteholders from the Note Payment Account$617,283.13 
67.Amount to be paid to Class A-3 Noteholders from the Note Payment Account$658,435.33 
68.Amount to be paid to Class B Noteholders from the Note Payment Account$164,334.00 
69.Amount to be paid to Class C Noteholders from the Note Payment Account$242,027.00 
70.Amount to be paid to Class D Noteholders from the Note Payment Account$242,027.00 
71.Amount to be paid to Class E Noteholders from the Note Payment Account$152,536.00 
72.Amount to be paid to Certificateholders from the Certificate Payment Account with respect to Excess Collections$0.00 



Delinquency Activity
Number of LoansPrincipal Balance
73.Delinquency Analysis
a. 31 to 60 days past due1,341$25,202,363.09 
b. 61 to 90 days past due285$5,668,388.31 
c. 91 to 120 days past due3$86,275.90 
d. 121 or more days past due0$0.00 
e. Total Past Due (sum a - d)1,629$30,957,027.30 
f. Delinquent Loans as a percentage of end of period Pool Balance (Ln 73e / Ln 5)5.2412 %
74.Has a Delinquency Trigger Event occurred?No
Loss Activity
Number of LoansPrincipal Balance
75.Defaulted Receivables (charge-offs)5$151,672.17 
76.Recoveries6$116,207.69 
77.Net Losses (Ln 75 - Ln 76)$35,464.48 
78.Ratio of Net Losses to Beginning of Period Pool Balance (Ln 77 / Ln 1)0.0058 %
Cumulative Loss Activity
Number of LoansPrincipal Balance
79.Defaulted Receivables (charge-offs)7$159,835.04 
80.Recoveries6$116,207.69 
81.Cumulative Net Losses (Ln 79 - Ln 80)$43,627.35 
82.Ratio of Cumulative Net Losses to Initial Pool Balance (Ln 81 / Ln 7)0.0070 %
83.Average Net Loss on Defaulted Receivables$6,232.48 
Other Servicing Information
84.Principal Balance of Receivables extended during the Collection Period$3,966,140.15 
85.Pool Balance on the close of the last day of the preceding Collection Period$606,660,462.96 
86.Ratio of extensions to pool balance (Ln 85 / Ln 86)0.65 %




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