SECTION 1. SHORT TITLE.

    This Act may be cited as the ``Services, Tools, and Opportunities 
to Prevent Homelessness Act of 2018'' or the ``STOP Homelessness Act of 
2018''.

SEC. 2. CONTRIBUTIONS TO THE STOP HOMELESSNESS FUND.

    (a) In General.--Subchapter A of chapter 61 of the Internal Revenue 
Code of 1986 is amended by adding at the end the following new part:

         ``PART IX--CONTRIBUTIONS TO THE STOP HOMELESSNESS FUND

``Sec. 6098. Contributions to the Stop Homelessness Fund.

``SEC. 6098. CONTRIBUTIONS TO THE STOP HOMELESSNESS FUND.

    ``(a) In General.--Every individual, with respect to the taxpayer's 
return for the taxable year of the tax imposed by chapter 1--
            ``(1) may designate that a specified portion (not less than 
        $1) of any overpayment of tax shall be paid over to the Stop 
        Homelessness Fund in accordance with the provisions of section 
        9512, and
            ``(2) in addition to any payment (if any) under paragraph 
        (1), may make a contribution to the United States of an 
        additional amount which shall be paid over to such Fund.
    ``(b) Manner and Time of Designation and Contribution.--A 
designation and contribution under subsection (a) may be made with 
respect to any taxable year--
            ``(1) at the time of filing the return of the tax imposed 
        by chapter 1 for such taxable year, or
            ``(2) at any other time (after such time of filing) 
        specified in regulations prescribed by the Secretary.
Such designation and contribution shall be made in such manner as the 
Secretary prescribes by regulations except that, if such designation is 
made at the time of filing the return of the tax imposed by chapter 1 
for such taxable year, such designation shall be made either on the 
first page of the return or on the page bearing the taxpayer's 
signature.
    ``(c) Overpayments Treated as Refunded.--For purposes of this 
title, any portion of an overpayment of tax designated under subsection 
(a) shall be treated as--
            ``(1) being refunded to the taxpayer as of the last date 
        prescribed for filing the return of tax imposed by chapter 1 
        (determined without regard to extensions) or, if later, the 
        date the return is filed, and
            ``(2) a contribution made by such taxpayer on such date to 
        the United States.''.
    (b) Stop Homelessness Fund.--Subchapter A of chapter 98 of the 
Internal Revenue Code of 1986 is amended by adding at the end the 
following new section:

``SEC. 9512. STOP HOMELESSNESS FUND.

    ``(a) Creation of Trust Fund.--There is established in the Treasury 
of the United States a trust fund to be known as the `Stop Homelessness 
Fund', consisting of such amounts as may be appropriated or credited to 
such fund as provided in this section or section 9602(b).
    ``(b) Transfers to Trust Fund.--There are hereby appropriated to 
the Stop Homelessness Fund amounts equal to the product of--
            ``(1) 2, multiplied by
            ``(2) the amounts designated and contributed under section 
        6098.
    ``(c) Expenditures.--Amounts in the Stop Homelessness Fund shall be 
available (and shall remain available until expended) to the Secretary 
of Housing and Urban Development, in consultation with the Interagency 
Council on Homelessness, the Secretary of Labor, the Secretary of 
Veterans Affairs, and the Secretary of Health and Human Services, for 
the purpose of providing housing and services to homeless and formerly 
homeless individuals through the development and implementation of new 
and innovative strategies and existing evidence-based programs to 
prevent and end homelessness.
    ``(d) Advance Notice.--The Secretary Housing and Urban Development 
shall submit a detailed expenditure plan for any amounts in the Stop 
Homelessness Fund to the Committee on Financial Services and the 
Committee on Appropriations of the House of Representatives and the 
Committee on Banking, Housing, and Urban Affairs and the Committee on 
Appropriations of the Senate not later than 60 days prior to any 
expenditure of such amounts.
    ``(e) President's Annual Budget Information.--Beginning with the 
President's annual budget submission for fiscal year 2019 and every 
year thereafter, the Secretary of Housing and Urban Development shall 
include a description of the use of funds from the Stop Homelessness 
Fund from the previous fiscal year and the proposed use of such funds 
for the next fiscal year.''.
    (c) Clerical Amendments.--
            (1) The table of parts for subchapter A of chapter 61 of 
        the Internal Revenue Code of 1986 is amended by adding at the 
        end the following new item:

       ``Part IX. Contributions to the Stop Homelessness Fund''.

            (2) The table of sections for subchapter A of chapter 98 of 
        such Code is amended by adding at the end the following new 
        item:

``Sec. 9512. Stop Homelessness Fund.''.
    (d) Effective Date.--The amendments made by this section shall 
apply to taxable years beginning after December 31, 2018.
Services, Tools, and Opportunities to Prevent Homelessness Act of 2018 or the STOP Homelessness Act of 2018  This bill amends the Internal Revenue Code to: (1) establish the Stop Homelessness Fund for the Department of Housing and Urban Development (HUD) to use to provide housing and services to homeless and formerly homeless individuals; (2) allow individual taxpayers to designate on their tax returns a portion (not less than $1) of any overpayment of tax or an additional contribution for the fund; (3) provide appropriations to the fund equal to twice the amount that is designated and contributed by taxpayers to the fund; and (4) require HUD to include in the President's budget, beginning with FY2019, a description of the uses of the fund during the previous fiscal year and the proposed uses for the next fiscal year. 
Services, Tools, and Opportunities to Prevent Homelessness Act of 2018