Colorado Code § 39-27-102.5

Exemptions on tax imposed - ex-tax purchases - definition - repeal
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(1) (Deleted by amendment, L. 2005, p. 866, § 2, effective July 1, 2005.)
(1.5) Except as otherwise provided in this section, diesel engine fuel and kerosene is
presumed to be for use for a taxable purpose unless indelible dye meeting federal regulations is
added to the diesel engine fuel or kerosene before or upon removal from a terminal. Such dyed
special fuel is exempt from the excise tax imposed pursuant to this part 1. The tax-exempt
special fuel shall not be used for taxable purposes; except that dyed special fuel may be used for
a taxable purpose to the extent that such use is allowed under federal law or regulations with
such fuel being subject to the excise tax imposed pursuant to this part 1. For purposes of this
subsection (1.5), "taxable purpose" means any use on which an excise tax on special fuel is
imposed pursuant to this part 1. The terminal operator shall ensure that tax-exempt special fuel is
dyed before it leaves the terminal. Every seller thereafter shall give notice to any purchaser in
accordance with federal regulations that the dyed special fuel may not be used for a taxable
purpose.
(2) (a) Dyed diesel fuel purchased to propel farm vehicles, when the same are being used
on farms and ranches, farm tractors, and implements of husbandry only incidentally operated or
moved on a highway, when operated off the public highways, and vehicles or construction
equipment operated within the confines of highway construction projects when the same are
actually being used in the construction of such highways is exempt from the excise tax imposed
pursuant to this part 1. In accordance with section 39-27-104 (1)(d.5), dyed diesel fuel may be
blended by a licensed distributor with biodiesel fuel after withdrawal at a terminal up to the
maximum federally allowable blend. Such blended special fuel is exempt from the excise tax
imposed pursuant to this part 1, so long as it is purchased for the purposes set forth in this
subsection (2)(a). A person who purchases undyed special fuel for the purposes set forth in this
subsection (2)(a) may, in accordance with section 39-27-103, apply to the department of revenue
for a refund of the excise tax paid thereon.
(b) (I) (Deleted by amendment, L. 2005, p. 866, § 2, effective July 1, 2005.)
(II) Gasoline and special fuel purchased by the United States or any of its agencies, the
state of Colorado or any of its agencies, any town, city, county, city and county, school district
of this state, or any other political subdivision of this state is exempt from the excise tax imposed
pursuant to this part 1, regardless of whether the special fuel is dyed pursuant to subsection (1.5)
of this section, if the gasoline or special fuel is used exclusively by the governmental entity in
performing its governmental functions and activities. This exemption only applies if the gasoline
or special fuel purchased by the governmental entity is used in machines owned or operated by
the governmental entity. Exemptions for persons conducting business for the governmental
entities on a contract basis using an aircraft must be based solely on the applicable operating
certificate of the aircraft operator pursuant to subsection (2.5) of this section.
(III) (A) Any governmental entity referred to in subsection (2)(b)(II) of this section may
obtain an exemption certificate from the executive director of the department of revenue
pursuant to subsection (3) of this section.
(B) A distributor may sell ex-tax gasoline or special fuel to a governmental entity with a
valid exemption certificate, regardless of whether the special fuel is dyed pursuant to subsection
(1.5) of this section.
(C) A governmental entity with a valid exemption certificate may sell to or purchase
gasoline or special fuel from another governmental entity that also has a valid tax exemption
certificate. The gasoline or special fuel must be used exclusively by the purchasing
governmental entity in performing its governmental functions and activities in machines owned
or operated by the governmental entity. A governmental entity is required to keep a copy of the
fuel tax exemption certificate on file for any entity to which it resells or distributes fuel. A
governmental entity that sells gasoline or special fuel pursuant to this subsection (2)(b)(III)(C) is
not required to be a licensee pursuant to section 39-27-104. Sales authorized pursuant to this
subsection (2)(b)(III)(C) are intended to facilitate intergovernmental efficiencies with respect to
sales for individual vehicles or equipment. This subsection (2)(b)(III)(C) does not apply to
intergovernmental sales in excess of five hundred gallons in a single transaction unless required
for unusual, unforeseen, or emergency circumstances.
(D) In the case of gasoline or special fuel acquired by a governmental entity upon which
the tax imposed by this part 1 was paid, the governmental entity may apply to the department of
revenue for a refund of the excise tax paid thereon in accordance with section 39-27-103.
(c) Any person operating a vehicle other than a qualified motor vehicle pursuant to the
motor fuel tax cooperative agreement entered into under part 3 of this article may bring into this
state for the operation of such vehicle only the amount of special fuel that is in the ordinary fuel
tank attached to such vehicle without being liable for the payment of the tax under this part 1.
(2.5) (a) (I) Products, including kerosene, specially prepared, sold, and used in aircraft
operated by scheduled air carriers or commuter airline operators exempt from the federal
aviation fuels tax are exempt from the tax imposed pursuant to this part 1.
(II) Prior to January 1, 2025, gasoline used by domestic or foreign part 121 air carriers or
part 135 commuter air carriers authorized to provide passenger and cargo air transportation
services pursuant to the regulations of the office of the secretary of transportation and federal
aviation administration of the United States department of transportation is exempt from the tax
imposed pursuant to this part 1. For those air carriers that are certificated by the United States
department of transportation for both part 121 air carrier operations and part 135 on-demand
operations, the provisions of this subsection (2.5)(a)(II) shall not apply to the air carrier's part
135 on-demand operations.
(III) Prior to January 1, 2025, gasoline used by direct air carriers providing air
transportation to authorized public charter operators pursuant to 14 CFR 380 is exempt from the
tax imposed pursuant to this part 1.
(IV) Subsections (2.5)(a)(II) and (2.5)(a)(III) of this section and this subsection
(2.5)(a)(IV) are repealed, effective December 31, 2028.
(b) A distributor or terminal operator may sell ex-tax gasoline or special fuel to an air
carrier described in this subsection (2.5). In the case of gasoline or special fuel acquired by an air
carrier described in this subsection (2.5) upon which the tax imposed by this part 1 was paid, the
air carrier may apply to the department of revenue for a refund of the excise tax paid thereon in
accordance with section 39-27-103.
(c) Nothing in this subsection (2.5) exempts sales of aviation fuel from the sales tax
imposed under article 26 of this title 39.
(3) (a) (Deleted by amendment, L. 2021.)
(b) (I) The executive director of the department of revenue shall issue an exemption
certificate to a user of gasoline or special fuel to purchase ex-tax gasoline or special fuel if the
user is exempt under subsection (2) or (2.5) of this section.
(II) A distributor may sell ex-tax gasoline or special fuel pursuant to subsections (2) and
(2.5) of this section. The distributor may claim a credit against the tax accrued and payable for
taxes due on ex-tax gasoline or special fuel or for taxes paid on ex-tax gasoline or special fuel by
such distributor in a prior taxable period. If the distributor establishes that a tax was imposed and
paid under this article 27 by a licensed distributor, special fuel is allowed as a credit on the
distributor's next return. To the extent the credit exceeds the tax due, the executive director of the
department of revenue shall issue a refund of such excess. The manifest, bill of lading, invoice,
or other similar document issued by the supplier, importer, or distributor must state that the
gasoline or special fuel is sold on an ex-tax basis.
(c) With each sale of gasoline or special fuel made without payment of the tax pursuant
to this subsection (3), the distributor shall secure evidence that the user is exempt from tax under
this section.
(d) A distributor has the burden of proving that gasoline or special fuel is exempt from
tax pursuant to this section. The department of revenue may prescribe reasonable requirements
of proof for the exemption.
(4) (Deleted by amendment, L. 2000, p. 1932, § 15, effective October 1, 2000.)
(5) to (8) Repealed.
(9) Compressed natural gas used to propel a motor vehicle on the highways of this state
that is supplied to the user at a residential home is exempt from the special fuel tax imposed by
this article.
(10) Gasoline or special fuel removed from a terminal by a licensed exporter exclusively
for delivery to another state is exempt from the tax imposed by this part 1.

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