Tex. Tax Code § 151.321

(a) A taxable item sold by a qualified student organization and for which the sales price is $5,000 or less, is exempted from the taxes imposed by Subchapter C, except that a taxable item manufactured by or donated to the organization is exempt from the taxes imposed by Subchapter C regardless of sales price unless sold to the donor, if the student organization:

(1) sells the item at a sale that may last for one day only and the primary purpose of which is to raise funds for the organization; and

(2) holds not more than one sale described by Subdivision (1) each month for which an exemption is claimed for an item sold.

(b) In each calendar year, the first $5,000 of a qualified student organization's total receipts from sales of taxable items not otherwise exempt under Subsection (a) is exempt from the taxes imposed by Subchapter C.

(c) A student organization qualifies for the exemptions under Subsections (a) and (b) if the student organization:

(1) is affiliated with an institution of higher education as defined by Section 61.003, Education Code, or a private or independent college or university that is located in this state and that is accredited by a recognized accrediting agency under Section 61.003, Education Code;

(2) has as its primary purpose a purpose other than engaging in business or performing an activity designed to make a profit; and

(3) files a certification with the comptroller as required by Subsection (d).

(d) A student organization must file with the comptroller a certification issued by the institution, college, or university described in Subsection (c)(1) showing that the organization is affiliated with the institution, college, or university.

(e) The storage, use, or consumption of a taxable item acquired tax-free under this section is exempted from the use tax imposed by Subchapter D until the item is resold or subsequently transferred.