0745 GMT April 23, 2021
The Wall Street Journal has reported the payment firm believes the Trump campaign broke its rules against inciting violence.
The platform forbids customers from using it for business that "engages in, encourages, promotes or celebrates unlawful violence or physical harm to persons or property," the newspaper said.
Stripe is the latest in a wave of American companies to cut ties with Trump after attack by his supporters, which followed an address by the president in Washington.
Twitter suspended Trump's personal account, which he used to campaign and announce public policy, and online sales platform Shopify shut down pages selling items related to his campaign.
Companies including hotel giant Marriott and health insurer Blue Cross Blue Shield said they would stop making donations to Republican lawmakers who tried to stop certification of election results showing Joe Biden defeating Trump in last November's polls.
JPMorgan Chase said it was temporarily halting donations to candidates from both parties.
Stripe had previously stopped working with conservative social network Gab when it discovered that the perpetrator of a shooting that killed 11 people at a Pittsburgh synagogue had posted anti-Semitic messages on its forum.