The general rule is that any gift is a taxable gift (IRS Publication 559, page 25). See below for exceptions.
TaxAct supports the individual tax return but does not support the gift tax return (Form 709). This is a separate return from the individual tax return (Form 1040).
The gift exclusion for 2019 has increased to $15,000.
See IRS Publication 559 Survivors, Executors, and Administrators for more information regarding the gift tax.