The excess burden of taxation typically has two graphical representations in undergraduate microeconomics and public finance textbooks: the IC/BC (indifference curve/budget constraint) representation and the demand/supply representation. The IC/BC representation has the advantage of showing the behavioral response to a distortionary tax and how a substitution effect alone contributes to the excess burden, whereas the demand/supply representation, also known as the Harberger Triangle, has the advantage of being easily estimated using observable variables. The authors provide a link between the two excess burden representations by illustrating how the Harberger Triangle in the demand/supply framework corresponds to the line segment that represents the excess burden in the IC/BC framework.