TaxACT. Not only does TaxACT undercut TurboTax by at least 50 percent on their software costs ($12.99 vs. $29.99 on the Deluxe packages and $17.99 vs. $49.99 for the next level), you won’t pay nearly as much if you have to file an additional state.TurboTax’s cost for each state is $36.99.ot only does TaxACT undercut TurboTax by at least 50 percent on their software costs ($12.99 vs. $29.99 on the Deluxe packages and $17.99 vs. $49.99 for the next level), you won’t pay nearly as much if you have to file an additional state.