You'll need TurboTax Business to file Form 1041, as the personal versions of TurboTax do not support this form.
TurboTax Business (Windows only) is available on CD or as a download. It's not available for Mac or in our online versions of TurboTax.
After you install TurboTax Business and begin working on your return, you'll be asked which type of return you need to prepare. Select Trust or Estate return (Form 1041) and proceed.