I want to attach my 1099 from my brokerage instead of entering all the information by hand. The software for Business said I would be prompted to do so prior to efiling, but there has not been a prompt, and I have been unable to figure out how to do this. A call to the support center was useless. Please advise if this is possible for an efile, and if so, how? (I have saved a pdf version of the 1099, and can easily attach it.)
Unfortunately you cannot add an attachment to an e-filed tax return. TurboTax doesn't provide this feature, in part because the IRS and state e-file systems would not be able to recognize them as a tax form and check their accuracy. You would have to print and mail your return.