The practical reason
Most consumer tax software is organized around income, deductions, credits, state returns, and e-file. Form 709 has a different job: it reports certain lifetime gifts and GST transfers, computes gift tax if any, and tracks use of gift and estate tax exclusion.
That difference matters for product design. A good Form 709 workflow has to ask about donees, gift dates, annual exclusion, present interest, GST, prior gift returns, spouse gift splitting, valuation records, signatures, and paper mailing proof.
What Tax Paperwork does
Tax Paperwork public preview creates browser-local, watermarked draft packets for narrow supported facts. It does not submit to the IRS, store return data, decide whether a gift occurred, value property, or provide tax, legal, accounting, or valuation advice.
Stop before using a self-file workflow
Stop for professional review if the facts include GST, trusts, gift splitting, real estate, private company interests, prior Form 709 history, donor death, amended returns, nonresident donor facts, or current tax due.