39-11-105(a)(xxiv) to the department. On or before October 1 the

39-11-105(a)(xxiv) to the department. On or before October 1 the state treasurer out of funds appropriated for that purpose shall reimburse each county treasurer for the amount of taxes which would have been collected if the property was not exempt. The county treasurer shall distribute the revenue to each governmental entity in the actual amount of taxes lost due to the exemption.

(m) The department shall annually value and assess the following property at its fair market value for taxation:

(i) The gross product of all mines and mining claims;

(ii) Property of pipeline companies;

(iii) Property of electric utilities;

(iv) Property of railroad companies;

(v) Property of rail car companies;

(vi) Property of telecommunications companies;

(vii) Property of other public utilities;

(viii) Leased property consisting of warehouses, storage facilities and office structures and any other property that is in support of or which is used or held for use for the activities listed in this subsection. If leased property is assessed to the lessee it shall not be assessed to the property owner;

(ix) Property of cable or satellite television companies;

(x) Property of airline companies used for the public transportation of passengers or property for hire.

(n) Following determination of the fair market value of property the department shall notify the taxpayer by mail or, if offered by the department and upon request of the taxpayer, by electronic transmission of the assessed value. The person assessed may file written objections to the assessment with the board within thirty (30) days of the date of postmark or the date of electronic transmission, whichever is earlier, and appear before the board at a time specified by the board. For purposes of this subsection, if a written objection is mailed or sent by electronic transmission by the person assessed, it shall be deemed timely filed if it is postmarked or transmitted not later than thirty (30) days after the mailing or electronic transmission of the notification of the assessed value. The person assessed shall also file a copy of the written objections with the county treasurer of the county in which the property is located, who shall notify the county assessor and the board of county commissioners, with an estimate of the tax amount under appeal based upon the previous year's tax levy.

(o) Annually, on or before the dates hereafter indicated, or as soon thereafter as the fair market value is determined, the department shall certify the valuation determined by the department to the county assessor of the county in which the property is located, to be entered upon the assessment rolls of the county:

(i) June 1, mines and mining claims, pipeline companies, electric utilities and other public utilities;

(ii) First Monday in June, telephone and telegraph companies;

(iii) First Monday in July, railroad companies.

(p) Any governmental entity with authority to levy or require the levy of property taxes which is formed or organized or which changes its geographical boundaries shall cause one (1) copy of the legal description which is contained within the document authorizing formation or modification of boundaries and one (1) copy of an official map designating the geographical boundaries as formed or changed to be filed with the department and with the county clerk and county assessor in the county or counties within which the entity is located within ten (10) days after the effective date of the formation, and annually, by a date determined by the department, if the governmental entity levies or requires the levy of taxes and has changes to its geographical boundaries by annexation, enlargement, merger, consolidation, exclusion or dissolution. Failure to file the required documents within the required time relieves the county assessor and the department from responsibility of modifying the assessment roll to reflect the property in the new entity or changed boundary area.

(q) Confidentiality. The following shall apply:

(i) All taxpayer returns and return information shall be confidential and, except as authorized below, no current or former official, officer, employee or agent of the state of Wyoming or any political subdivision thereof shall disclose any such information obtained by him in connection with his service as an officer or employee. As used in this subsection, "taxpayer returns and return information" shall include, but not be limited to, all statements, reports, summaries and all other data and documents under audit or provided by the taxpayer in accordance with law;

(ii) Without written authorization from the taxpayer, no current or former official, officer, employee or agent of the state of Wyoming or any political subdivision thereof shall release taxpayer returns and return information pertaining to taxes imposed by this chapter, except:

(A) Information filed with the department may be released to the governor or his designee, members of the state board of equalization, to the commissioners and employees of the public service commission, to employees of the department of audit, the department of revenue, the consensus revenue estimating group and to the attorney general. Information filed with the county assessor may be released to the county board of equalization, the department of revenue and the department of audit;

(B) Upon prior notice to the taxpayer, information filed with the department may be released by the department, upon written application, to any other governmental entity if the governmental entity shows sufficient reason to obtain the information for official business;

(C) Information concerning taxpayer's valuation and assessment shall be made available on a confidential basis to the county board of equalization and the state board of equalization when the information is pertinent to an appeal before either board;

(D) Any other use authorized by law;

(E) An itemized list of the taxpayer's taxable tangible personal property provided to the assessor pursuant to W.S. 39-13-107(a)(i) may be disclosed to a new owner of property that is the subject of the taxpayer's returns or return information upon a transfer of that taxable tangible personal property to the new owner.

(iii) Any person receiving information pursuant to paragraph (ii) of this subsection shall sign an agreement with the department to keep the information confidential;

(iv) The taxable value of the taxpayer's property is not confidential and may be released without qualification;

(v) Any person who negligently violates the provisions of this subsection is guilty of a misdemeanor and upon conviction shall be fined not more than one thousand dollars ($1,000.00). Any person who intentionally violates the provisions of this subsection is guilty of a misdemeanor and upon conviction shall be fined not less than one thousand dollars ($1,000.00), but not more than five thousand dollars ($5,000.00) and imprisoned for not more than one (1) year.

39-13-103. Imposition.

(a) Taxable event. The following shall apply:

(i) The tax imposed by this chapter shall be in addition to any other taxes imposed by law including but not limited to those taxes in W.S. 39-14-101 through 39-14-711;

(ii) All property claimed to be in transit shall be designated as being in transit upon the books and records of the public or private warehouse or storage area supervisor wherein the same is located. The books and records of the public or private warehouse or storage area supervisor shall contain a full, true and correct inventory of all in transit property, together with the date of the withdrawal of the same, the point of origin thereof and point of ultimate destination thereof if known. The books and records of the public or private warehouse or storage area supervisor with reference to any in transit property shall at all times be open to the inspection of all taxing authorities of the state of Wyoming and any political subdivision thereof. Any person claiming property to be in transit shall do so in the form and manner provided by the board. The books and records of the public or private warehouse or storage area supervisor must be maintained in a manner which will enable the county assessor or his agent to quickly ascertain the amount of the property.

(b) Basis of tax. The following shall apply:

(i) Except as otherwise provided:

(A) All taxable property shall be annually listed, valued and assessed for taxation in the county in which located and in the name of the owner of the property on January 1;

(B) All taxable personal property brought, driven or coming into Wyoming, or acquired, after the assessment date and prior to December 31 which remains in Wyoming at least thirty (30) days and has not been regularly assessed for taxation in any other Wyoming county is subject to and shall be assessed for all taxes levied in the county in which the property is located for that calendar year except as hereafter provided. Property subject to this paragraph brought, driven or coming into Wyoming, or acquired, after March 1 is subject to taxes only for the proportionate part of the year remaining, computed to the closest full month.

(ii) All taxable property shall be annually valued at its fair market value. Except as otherwise provided by law for specific property, the department shall prescribe by rule and regulation the appraisal methods and systems for determining fair market value using generally accepted appraisal standards;

Note: Effective 1/1/2026 this paragraph will read as:

(ii) All taxable property shall be annually valued at its fair market value. Except as otherwise provided by law for specific property, the department shall prescribe by rule and regulation the appraisal methods and systems for determining fair market value using generally accepted appraisal standards. For tangible personal property, fair market value shall be determined using valuation indexes and depreciation schedules prescribed by rule and regulation of the department. Once the tangible personal property reaches the depreciation floor, the trending factor shall remain constant for subsequent years until the property is removed from service. As used in this paragraph, "depreciation floor" means twenty percent (20%) of the reported installed cost of the property. As used in this paragraph, "tangible personal property" excludes any property that is valued under W.S. 39-13-102(m) and mobile homes required to be titled under W.S. 31-2-501 through 31-2-508;

(iii) Beginning January 1, 1989, "taxable value" means a percent of the fair market value of property in a particular class as follows:

(A) Gross product of minerals and mine products, one hundred percent (100%);

(B) Property used for industrial purposes, eleven and one-half percent (11.5%);

(C) All other property, real and personal, nine and one-half percent (9.5%).

(iv) The fair market value determined by the department pursuant to W.S. 39-11-101(a)(vi) and 39-14-101 through 39-14-711 pertaining to the valuation of the gross product of mines and mining claims, and paragraph (xvi) of this subsection as it pertains to the valuation of rail car companies, shall be the fair market value for purposes of the tax imposed by this chapter on the property described in W.S.