Single member LLC? Multi-member LLC? either way, there is no "short year" for either type of LLC. If a single member LLC it will be reported on SCH C as a physical part of your personal 1040 tax return when you file for 2019, in 2020. If a multi-member LLC it gets reported on a 2019 tax year1065 partnership return which will be due by March 15th, 2020. The Turbotax 2019 programs will not be out until Dec 2019 at the absolute earliest. But keep in mind the IRS will not even start accepting returns for 2019, until Jan 15, 2020 or after.
