TurboTax for 2018 is not available yet. The CD/Download software is usually available in late November, and TurboTax Online in early December. It might be a little later this year because of the extensive changes in the tax laws. Even when it does become available, some things might not be working quite right or some areas might be incomplete. You will be able to start entering information, but you won't be able to file until sometime in January at the earliest.