Of note, 2nd Story Software still offers its TaxACT Online Ultimate tax preparation software for $17.95. Register for a new account and the price falls to $11.90. That's tied with last year's mention as the best deal we've seen on TaxACT. It's also the lowest we've seen this year for any tax filing service that includes federal, state, and e-file. Note that additional states cost $14.95 each.