@starfisht wrote:
I know that TT does not support form 709. Is there a way to manually fill it out and then incorporate it into my TT tax return?
Not really since you do not file Form 709 with your federal income tax return.
Form: https://www.irs.gov/pub/irs-pdf/f709.pdf
See where to file: https://www.irs.gov/instructions/i709#idm140554828276256
