Exhibit 10.6

EXPENSE SUPPORT AND CONDITIONAL REIMBURSEMENT AGREEMENT

This Expense Support and Conditional Reimbursement Agreement (the “Agreement”) is made this 31st day of December, 2019, by and between NUVEEN CHURCHILL BDC, INC., a Maryland corporation (the “Company”), and NUVEEN CHURCHILL ADVISORS LLC, a Delaware limited liability company (the “Adviser”).

WHEREAS, the Company is a non-diversified, closed-end management investment company that intends to elect to be regulated as a business development company under the Investment Company Act of 1940, as amended (the “1940 Act”);

WHEREAS, the Company has retained the Adviser to furnish investment advisory services to the Company on the terms and conditions set forth in the investment advisory agreement, dated December 31, 2019, entered between the Company and the Adviser, as may be amended or restated (the “Investment Advisory Agreement”);

WHEREAS, the Company and the Adviser have determined that it is appropriate and in the best interests of the Company that the Adviser may elect to pay a portion of the Company’s expenses from time to time, which the Company will be obligated to reimburse to the Adviser at a later date if certain conditions are met.

NOW, THEREFORE, in consideration of the premises and for other good and valuable consideration, the parties hereby agree as follows:

1. Adviser Expense Payments to the Company

(a) At such times as the Adviser determines, the Adviser may elect to pay certain expenses of the Company on the Company’s behalf (each such payment, an “Expense Payment”). In making an Expense Payment, the Adviser will designate, as it deems necessary or advisable, what type of Expense it is paying (including, whether it is paying organizational or offering expenses); provided that no portion of an Expense Payment will be used to pay any interest expense of the Company.

(b) The Company’s right to receive an Expense Payment shall be an asset of the Company upon the Adviser committing in writing to pay the Expense Payment pursuant to a notice substantially in the form of Appendix A. Any Expense Payment that the Adviser has committed to pay shall be paid by the Adviser to the Company in any combination of cash or other immediately available funds no later than forty-five days after such commitment was made in writing, and/or offset against amounts due from the Company to the Adviser or its affiliates.

2. Reimbursement of Expense Payments by the Company

(a) Following any calendar quarter in which Available Operating Funds (as defined below) exceed the cumulative distributions accrued to the Company’s shareholders based on distributions declared with respect to record dates occurring in such calendar quarter (the amount of such excess being hereinafter referred to as “Excess Operating Funds”), the Company shall pay such Excess Operating Funds, or a portion thereof in accordance with Sections 2(b) and 2(c), as applicable, to the Adviser until such time as all Expense Payments made by the Adviser to the Company within three years prior to the last business day of such calendar quarter have been reimbursed. Any payments required to be made by the Company pursuant to this Section 2(a) shall be referred to herein as a “Reimbursement Payment.” For purposes of this Agreement, “Available Operating Funds” means the sum of (i) the Company’s net investment income determined in accordance with U.S. generally accepted accounting principles (including net realized short-term capital gains reduced by net realized long-term capital losses), (ii) the Company’s net capital gains (including the excess of net realized long-term capital gains over net realized short-term capital losses) and (iii) dividends and other distributions paid to the Company on account of investments in portfolio companies (to the extent such amounts listed in clause (iii) are not included under clauses (i) and (ii) above).

(b) Subject to Section 2(c), the amount of the Reimbursement Payment for any calendar quarter shall equal the lesser of (i) the Excess Operating Funds in such quarter and (ii) the aggregate amount of all Expense Payments made by the Adviser to the Company within three years prior to the last business day of such calendar quarter that have not been previously reimbursed by the Company to the Adviser; provided that the Adviser may waive its right

to receive all or a portion of any Reimbursement Payment in any particular calendar quarter, in which case such waived amount will remain unreimbursed Expense Payments reimbursable in future quarters pursuant to the terms of this Agreement.

(c) Notwithstanding anything to the contrary in this Agreement, no Reimbursement Payment for any quarter shall be made if: (1) the Effective Rate of Distributions Per Share (as defined below) declared by the Company at the time of such Reimbursement Payment is less than the Effective Rate of Distributions Per Share at the time the Expense Payment was made to which such Reimbursement Payment relates, or (2) the Company’s Operating Expense Ratio (as defined below) at the time of such Reimbursement Payment is greater than the Operating Expense Ratio at the time the Expense Payment was made to which such Reimbursement Payment relates. For purposes of this Agreement, “Effective Rate of Distributions Per Share” means the annualized rate (based on a 365 day year) of regular cash distributions per share of common stock declared by the Company’s Board of Directors exclusive of returns of capital, distribution rate reductions dueto any fees (including to a transfer agent) payable in connection with distributions, and any declared special dividends or distributions. The “Operating Expense Ratio” is calculated by dividing Operating Expenses (as defined below), less organizational and offering expenses, base management and incentive fees owed to the Adviser, and interest expense, by the Company’s net assets. “Operating Expenses” means all of the Company’s operating costs and expenses incurred, as determined in accordance with generally accepted accounting principles for investment companies.

(d) The Company’s obligation to make a Reimbursement Payment shall automatically become a liability of the Company on the last business day of the applicable calendar quarter, except to the extent the Adviser has waived its right to receive such payment for the applicable quarter. In connection with any Reimbursement Payment, the Company may deliver a notice substantially in the form of Appendix A. The Reimbursement Payment for any calendar quarter shall bepaid by the Company to the Adviser in any combination of cash or other immediately available funds as promptly as possible following such calendar quarter and in no event later than forty-five days after the end of such calendar quarter.

(e) All Reimbursement Payments hereunder shall be deemed to relate to the earliest unreimbursed Expense Payments made by theAdviserto the Company within three years prior to the last business day of the calendar quarter in which such Reimbursement Payment obligation is accrued.

3. Termination and Survival

(a) This Agreement shall become effective as of the date of this Agreement.

(b) ThisAgreementmay be terminated at any time, without the payment of any penalty, by the Company or the Adviser, with or without notice.

(c) This Agreement shall automatically terminate in the event of (i) the termination by the Company of the Investment Advisory Agreement; (ii) the board of directors of the Company making a determination to dissolve or liquidate the Company; or (iii) a quotation or listing of the Company’s securities on a national securities exchange (including through aninitialpublic offering) or a sale of all or substantially all of the Company’s assets to, or a merger or other liquidity transaction with, an entity in which the Company’s shareholders receive shares of a publicly-traded company which continues to be managed by the Adviser or an affiliate thereof.

(d) Notwithstanding anything to the contrary, Section 2 of this Agreement shall survive any termination of this Agreement withrespectto any Expense Payments that have not been reimbursed by the Company to the Adviser.

4. Miscellaneous

(a) The captions of this Agreement are included for convenience only and in no way define or limit any of the provisions hereof orotherwiseaffect their construction or effect.

(b) ThisAgreementcontains the entire agreement of the parties and supersedes all prior agreements, understandings and arrangements with respect to the subject matter hereof.

2

(c) Notwithstanding the place where this Agreement may be executed by any of the parties hereto, this Agreement shall be construed in accordance with the laws of the State of New York. For so long as the Company is regulated as a business development company under the 1940 Act, this Agreement shall also be construed in accordance with the applicable provisions of the 1940 Act. In such case, to the extent the applicable laws of the State of New York or any of the provisions herein conflict with the provisions of the 1940 Act, the latter shall control. Further, nothing in this Agreementshallbe deemed to require the Company to take any action contrary to the Company’s Articles of Incorporation or Bylaws, as each may be amended or restated, or to relieve or deprive the board of directors of the Company of its responsibility for and control of the conduct of the affairs of the Company.

(d) If any provision of this Agreement shall be held or made invalid by a court decision, statute, rule or otherwise, theremainder of this Agreement shall not be affected thereby and, to this extent, the provisions of this Agreement shall be deemed to be severable.

(e) The Company shall not assign this Agreement or any right, interest or benefit under this Agreement without the prior writtenconsentof the Adviser.

(f) This Agreement may be amended in writing by mutual consent of the parties. This Agreement may be executed by the parties onanynumber of counterparts, delivery of which may occur by facsimile or as an attachment to an electronic communication, each of which shall be deemed an original, and all of said counterparts taken together shall be deemed to constitute one and the same instrument.

[Remainder of page intentionally left blank.]

3

IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be executed by their duly authorized representatives as of the date first written above.

NUVEEN CHURCHILL BDC, INC.
By:	/s/ John D. McCally
Name:	John D. McCally
Title:	Vice President and Secretary
NUVEEN CHURCHILL ADVISORS LLC
By:	/s/ Keith Jones
Name:	Keith Jones
Title:	Senior Managing Director

[Signature Page to Expense Support and Conditional Reimbursement Agreement]

Appendix A

Form of Notice of Expense Payment or Reimbursement Payment

☐	Expense Payment
Expense Payment Effective Date:
Expense Payment Amount:
Organizational Expense:
Offering Expense:
Management Fee:
Incentive Fee:
Other:
Total:

All Expense Payments are subject to reimbursement pursuant to the terms of the Agreement.

☐	Reimbursement Payment
Reimbursement Payment Effective Date:
Reimbursement Payment Amount:
Organizational Expense:
Offering Expense:
Management Fee:
Incentive Fee:
Other:
Total: