In December 2012, Gusto announced that, back in April 2012 upon graduating from Y Combinator's Winter 2012 class, ZenPayroll had raised the largest seed round for a Y Combinator startup. The total amount of $6.1 million was raised from investors including Box CEO and co-founder Aaron Levie, Yammer CEO and co-founder David O. Sacks, Dropbox CEO and co-founder Drew Houston, YouTube co-founder Jawed Karim, Yelp CEO and co-founder Jeremy Stoppelman, Badgeville CEO and co-founder Kris Duggan, SugarCRM CEO Larry Augustin, and Zuora CEO and co-founder Tien Tzuo, as well as Google Ventures, Data Collective, Sherpalo Ventures, and Salesforce.com.
