Excise Tax
Excise taxes are a subset of “indirect” taxes under the constitutional framework. The category historically included taxes on specific commodities (alcohol, tobacco, fuel), on transactions (sales, transfers), and on the exercise of particular privileges (corporate franchise, business licensing). Excises must be “uniform throughout the United States” but are not subject to apportionment.
Brushaber v. Union Pacific Railroad Co. (1916) characterized the post-Sixteenth Amendment income tax as an excise — a tax on the activity of receiving income rather than a tax on the property received. The characterization served a precise doctrinal function: it allowed the Court to acknowledge Pollock’s direct-tax analysis without applying it to the income tax, and to read the Sixteenth Amendment as removing an apportionment requirement that Pollock had imposed on a category of taxes that were properly excises all along.
The excise characterization is regularly underread. The alternate-tax-theory community sometimes overstates its limiting force, arguing that “excise” implies the tax can only reach federally-privileged activities. The establishment typically treats the characterization as merely formal. Both readings miss the significance: the choice of characterization has consequences for how Congress can structure tax provisions, and Brushaber has done substantial doctrinal work in upholding modern tax structures whose constitutionality would otherwise be more contested than it is.