IRS Taxes Rubber Down to 5,474.21 Decimal Places? Bureaucratic Madness!
Published Date: 9/9/2026
Notice
Summary
This notice of filing announces that a petition has been filed requesting that solution styrene butadiene rubber ((C<INF>4</INF>H<INF>6</INF>)<INF>m</INF>- (C<INF>8</INF>H<INF>8</INF>)<INF>n</INF>- (C<INF>25</INF>H<INF>44</INF>OS<INF>2</INF>)<INF>a</INF>; m=5,474.21, n=504.08, a=3.30), also known as "sSBR," be added to the list of taxable substances. This notice of filing also requests comments on the petition. This notice of filing is not a determination that the list of taxable substances is modified.
Analyzed Economic Effects
3 provisions identified: 0 benefits, 3 costs, 0 mixed.
Petitioner’s Proposed Tax Rate and Codes
The petitioner included a proposed tax calculation showing a tax rate of $9.75 per ton for sSBR and provided conversion factors (butadiene 0.85, benzene 0.11, ethylene 0.04, propylene 0.0004, methane 0.0002, sodium hydroxide 0.0008). The petition also lists classification identifiers: HTSUS 4002.19.0016, Schedule B 4002.19.1600, and CAS 9003-55-8.
Petition Reports High Taxable Content
The petition states that taxable chemicals constitute 99.11 percent by weight of the materials used to produce sSBR. The petition describes sSBR as used in tires and other rubber parts like gaskets and conveyor belts.
Petition to Add sSBR to Taxable List
A petition was filed asking the IRS to add solution styrene butadiene rubber (sSBR) to the list of taxable substances under Internal Revenue Code section 4672. The petition filing dates are April 1, 2023 (for certain procedural purposes) and November 21, 2025 (for determination purposes); public comments and requests for a hearing are due by November 9, 2026. This notice of filing is not a determination that the substance will be added.
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This notice of filing announces that a petition has been filed requesting that acrylonitrile-butadiene rubber ((C<INF>4</INF>H<INF>6</INF>)<INF>x</INF>- (C<INF>3</INF>H<INF>3</INF>N)<INF>y</INF>- (C<INF>25</INF>H<INF>44</INF>OS<INF>2</INF>)<INF>a</INF>; x=3,344.33, y=1,335.09, a=2.98), also known as "NBR," be added to the list of taxable substances. This notice of filing also requests comments on the petition. This notice of filing is not a determination that the list of taxable substances is modified.