This paper assesses whether insurers' state taxes reduce purchases of prope
rty-casualty coverage. Tests are conducted using state aggregates of insure
r-level data from publicly available, annual accounting reports for 1993-19
95. A positive relation between self-insurance and state taxes is detected,
consistent with consumers opting to self-insure rather than bear the incid
ence of higher insurer taxes. As expected, tax effects vary with the elasti
city of demand. When demand is largely inelastic, e,g., automobile liabilit
y coverage, taxes do not affect self-insurance. (C) 2000 Elsevier Science B
.V. All rights reserved. JEL classification: H22; H25; G22; D12.