Joan Freeman, the founder of the suicide prevention centre Pieta House, is to donate her Senator's salary of €65,000 to the service she set up in 2006.
Fianna Fáil leader Micheál Martin appointed Ms Freeman to the Seanad last week.
In an agreement reached by Mr Martin and Taoiseach Enda Kenny, Fianna Fáil were allowed to make three appointments to the Upper House.
#JoanFreeman to give the whole salary that comes with her new Senator role back to the organisation she founded pic.twitter.com/kFYwQsPvoL
— Pieta House (@PietaHouse) May 30, 2016
Ms Freeman said it was “only right” that Pieta House benefitted from her appointment to the Seanad.
“I was appointed Senator because of Pieta House so it’s only right that Pieta House and the community benefit as a result of this,” she said.
"I'm only reflecting what the people of Ireland have done over the last ten years by giving so much. It costs Pieta House approximately €1,000 to provide a programme of therapy to one person from start to finish so this money will go towards helping people who need the service."
In the decade since it was founded, Pieta House has helped over 20,000 people in suicidal distress or engaging in self-harm. More than 5000 poeple accessed the service in 2015.