Facebook is to match up to £1m in donations pledged through its site for next week's Red Nose Day.
The social media company has said users will be able to set up their own fundraising pages for the biennial day, which takes place on 15 March and is organised by Comic Relief.
Facebook said it would also promote Red Nose Day in users' news feeds and include a click-through post enabling people to donate without having to set up fundraising pages of their own.
Donations made in the UK from 8am on Red Nose Day will be matched up to a total value of £1m.
Since it was founded in 1985, Comic Relief has raised more than £1.25bn.
It funds mainly charities that tackle poverty in the UK and internationally.
Liz Warner, chief executive of Comic Relief, said in a statement that finding new ways for people to support the projects it funded was vitally important.
She said: "Facebook's partnership will help us make that process even easier still."
Facebook waives fees for non-profit fundraisers, so all donations made will go to Comic Relief.
Anita Yuen, head of social good partnerships for Europe, Middle East and Africa at Facebook, said "We're happy that Facebook can support Comic Relief's work and help even more people get involved by making fundraising and donating even easier."