California is notorious for its high income tax: "9.3 percent on taxable income of $47,056 and above".

(From http://www.bankrate.com/brm/itax/edit/state/profiles/state_t... )

I think the relevant statistic would be tax burden per capita:

http://www.statemaster.com/graph/eco_tot_tax_bur-total-tax-b...

Texas is around half of CA.