Power of Attorney

    Know all by these presents that the undersigned hereby constitutes and
appoints Anthony Valentine, the undersigned's true and lawful attorney-in-fact
to:

 1. execute for and on behalf of the undersigned, in the undersigned's capacity
    as an officer and/or director of UWM Holdings Corporation (the "Company"),
    Form ID, including other documents necessary to obtain EDGAR Codes and
    passwords enabling the undersigned to make filing with the United States
    Securities and Exchange Commission, and Forms 3, 4 and 5 in accordance with
    the Section 16(a) of the Securities and Exchange Act of 1934, as amended
    (the "Exchange Act"), and the rules thereunder;

 2. do and perform any and all acts for and on behalf of the undersigned which
    may be necessary or desirable to complete and execute any such Form ID, Form
    3, 4 or 5, complete and execute any amendment or amendments thereto, and
    file such form with the United States Securities and Exchange Commission and
    any stock exchange or similar authority;

 3. take any other action of any type whatsoever in connection with the
    foregoing which, in the opinion of such attorney-in-fact, may be of benefit
    to, in the best interest of, or legally required by, the undersigned, it
    being understood that the documents executed by such attorney-in-fact on
    behalf of the undersigned pursuant to this Power of Attorney shall be in
    such form and shall contain such terms and conditions as such attorney-in-
    fact may approve in such attorney-in-fact's discretion;

    The undersigned hereby grants to each such attorney-in-fact full power and
authority to do and perform any and every act and thing whatsoever requisite,
necessary, or proper to be done in the exercise of any of the rights and powers
herein granted, as fully to all intents and purposes as the undersigned might or
could do if personally present, with full power of substitution or revocation,
hereby ratifying and confirming all that such attorney-in-fact, or such
attorney-in fact substitute or substitutes, shall lawfully do or cause to be
done by virtue of this Power of Attorney and the rights and pawers herein
granted.  The undersigned acknowledges that the foregoing attorneys-in-fact, in
serving in such capacity at the request of the undersigned, are not assuming,
nor is the Company assuming, any of the undersigned's responsibilities to comply
with Section 16 of the Exchange Act.

    This Power of Attorney shall remain in full force and effect until the
undersigned is no longer required to file Forms 3, 4 and 5 with respect to the
undersigned's holdings of, and transactions in, securities issued by the
Company, unless earlier revoked by the undersigned in a signed writing delivered
to the foregoing attorneys-in-fact.


IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to be
executed as of January 15, 2021.

                                     By:    /s/Justin Ishbia
                                        -----------------------
                                     Name: Justin Ishbia