Tex. Tax Code § 11.437

(a) A person who operates a warehouse used primarily for the storage of cotton for transportation outside of this state may apply for an exemption under Section 11.251 for cotton stored in the warehouse on behalf of all the owners of the cotton. An exemption granted under this section applies to all cotton stored in the warehouse that is eligible to be exempt under Section 11.251. Cotton that is stored in a warehouse covered by an exemption granted under this section and that is transported outside of this state is presumed to have been transported outside of this state within the time permitted by Article VIII, Section 1-j, of the Texas Constitution for cotton to qualify for an exemption under that section.

(b) An exemption granted under this section, once allowed, need not be claimed in subsequent years, and except as provided by Section 11.43(e), the exemption applies to cotton stored in the warehouse until the warehouse changes ownership or the cotton's qualification for the exemption changes. The chief appraiser may, however, require a person who operates a warehouse for which an exemption for cotton has been granted in a prior year to file a new application to confirm the cotton's current qualification for the exemption by delivering a written notice that a new application is required, accompanied by an appropriate application form, to the person.