Since it started as a hashtag in 2012, GivingTuesday, the Tuesday after Thanksgiving, has become one of the biggest fundraising days of the year for nonprofits in the U.S. In 2022 and 2023, GivingTuesday raised $3.1 billion for charitable organizations, according to estimates from GivingTuesday. This year, GivingTuesday is on Dec. 3. How did GivingTuesday start? The #GivingTuesday hashtag started as a project of the 92nd Street Y in New York in 2012 and became an independent organization in 2020.