The 2019 gift tax return deadline is coming up March 11, 2020 February 3, 2021 Tax Department Tax Bites annual gift tax exclusion, deadlines, gift tax, Gift Tax Exclusions, Section 529April 15 isn’t only the income tax return deadline. It’s also the gift tax return deadline for people who made large gifts last year. Find out if you’re required to file a 2019 gift tax return this April (or if you may want to file one anyway).