As of 2022, according to Bloomberg Billionaires Index, his net worth was estimated at US$11.4 billion, ranking him the 187th richest person in the world and one of the wealthiest people from Ireland.

[7][8][9][10] In 2009, Collison (having returned to finish secondary school at Castletroy College) received eight A1 and two A2 grades in the Irish Leaving Certificate examination.

[12][11] In 2010, Collison co-founded Stripe, which received backing from Elon Musk, Peter Thiel, Max Levchin, and Sequoia Capital.

[15] In 2018, Stripe, under the direction of the Collison brothers, contributed $1 million to California YIMBY, a pro-housing development lobbying organisation.

[16] In 2021 and 2022, Collison bought the Abbeyleix Estate and the derelict Millbrook House, neighbouring properties in County Laois, Ireland.

[19] He also tweeted "I am calling on them to come to Limerick where I will gladly set the record straight in respect of what our county and city has to offer as opposed to what your work of fiction depicts," and "Please let me know when suits to visit.