(a) When a person registers or renews the registration of a motor vehicle under this chapter, the person may contribute any amount to the Ending Homelessness fund under Subsection (f).
(b) The department shall provide, in a conspicuous manner, an opportunity to contribute to the Ending Homelessness fund in any registration renewal system used by the department.

(c) If a person makes a contribution under this section and does not pay the full amount of a registration fee, the county assessor-collector may credit all or a portion of the contribution to the person’s registration fee.
(d) The county assessor-collector shall send any contribution made under this section to the comptroller for deposit to the Ending Homelessness fund before the 31st day after the date the contribution is made.
(e) The department shall consult with the Texas Department of Housing and Community Affairs in performing the department’s duties under this section.
(f) The Ending Homelessness fund is created as a trust fund outside the state treasury to be held by the comptroller and administered by the Texas Department of Housing and Community Affairs as trustee. The fund is composed of money deposited to the credit of the fund under this section. Money in the fund shall be used to provide grants to counties and municipalities to combat homelessness.
(g) The Texas Department of Housing and Community Affairs shall adopt rules governing application for grants from the Ending Homelessness fund and the issuance of those grants.