of their MuniFund Preferred Shares for remarketing is suspended; and all of the Outstanding VRRM-MFP Shares is subject to mandatory tender for remarketing. All Outstanding VRRM-MFP Shares are subject to mandatory redemption on [●] (the "Failed Remarketing Mandatory Redemption Date"). This notice will be conclusively presumed to have been duly given, whether or not the Holders or Beneficial Owners receive this notice. Terms used herein and not otherwise defined will have the meanings given to such terms in the Supplement. Dated: [NAME], as Remarketing Agent By: Name: Title: Cc: [●] Nuveen AMT-Free Municipal Credit Income Fund Exhibit D - Form of Retention Notice NUVEEN AMT-FREE MUNICIPAL CREDIT INCOME FUND (NVG) (THE "FUND") SERIES [●] MUNIFUND PREFERRED SHARES IN THE VARIABLE RATE REMARKETED MODE ("VRRM-MFP SHARES") CUSIP No. [●]* RETENTION NOTICE TO: [●], as Remarketing Agent Further to the Remarketing Notice dated [●] (the "Remarketing Notice") all VRRM-MFP Shares will be subject to mandatory tender for purchase at a price equal to [●] (the "Purchase Price") on [●] (the "Remarketing Date"). As set forth in the Fund's Statement Establishing and Fixing the Rights and Preferences of Series [●] MuniFund Preferred Shares effective [●] (the "Statement"), as modified with respect to the Variable Rate Remarketed Mode (the Initial Mode) by the Supplement to the Statement Establishing and Fixing the Rights and Preferences of Series [●] MuniFund Preferred Shares Initially Designating the Variable Rate Remarketed Mode for the Series [●] MuniFund Preferred Shares effective [●], as amended, revised or supplemented from time to time (the "Supplement"), any Beneficial Owner of a VRRM-MFP Share that is not a Tendered VRRM-MFP Share that was part of the Failed Remarketing Event to which the Remarketing Notice relates, as determined by the Remarketing Agent, may deliver written notice to the Remarketing Agent and the Calculation and Paying