In the traditional certainty model of voter fiscal illusion, voters mi
sperceive nonstochastic tax prices as being lower than they actually a
re and therefore allow public sector officials to expand output beyond
the perfect information output. This article shows how modeling fisca
l illusion as imperfect voter information or uncertainty introduces an
additional risk term that offsets the certainty model illusion-output
expansion effect. The fiscal illusion-output expansion hypothesis is
evaluated by empirically examining the impact of fiscal structure comp
lexity, both with respect to sources and uses of revenues, on public e
xpenditure demand. In keeping with the uncertainty model of fiscal ill
usion, the data reveal little support for the illusion-output expansio
n hypothesis.