PGIM Investments LLC

655 Broad Street – 6th Floor

Newark, New Jersey 07102

September 1, 2022

The Board of Directors

Prudential NationalMuni Fund, Inc.

655Broad Street—6th Floor Newark, New Jersey 07102

Re: PGIM NationalMuni Fund

To the Board of Directors:

PGIM Investments LLC (PGIM Investments) has contractually agreed, through December 31, 2023, to limit Total Annual Fund Operating Expenses after fee waivers and/or expense reimbursements to 0.36% of average daily net assets for Class Z shares, and 0.29% of average daily net assets for Class R6 shares. This contractualwaiver excludes interest, brokerage,

taxes (such as income and foreign withholding taxes, stamp duty and deferred tax expenses), acquired fund fees and expenses, extraordinary expenses, and certain other Fund expenses such as dividend and interest expense and broker charges on short sales. Where applicable, PGIM Investments agrees to waive management fees or shared operating

expenses on any share class to the same extent that it waives such expenses on any other share class. In addition, Total Annual Fund Operating Expenses for Class R6 shares will not exceed Total AnnualFund Operating Expenses for Class Z shares. Fees and/or expenses waived and/or reimbursed by PGIM Investments may be recouped by PGIM Investments

within the same fiscal year during which such waiver and/or reimbursement is made if such recoupment can be realized without exceeding the expense limit in effect at the time of the recoupment for that fiscal year. This waiver may not be terminated prior to December 31, 2023, without the prior approvalof the Fund's Board of Directors.

Very truly yours,

PGIM INVESTMENTS LLC

By:	/s/ Scott E. Benjamin
	---------------------------
Name:	Scott E. Benjamin
Title:	Executive Vice President