Private firms were paid over €300 million for running direct provision centres in the past three years.
It cost the state over €175 million last year, €129 million in 2019, and €78 million in 2018.
Nearly 5,300 asylum-seekers and refugees are currently living in 46 direct provision centres across the country.
The government says the system will be abolished by 2024, but Nick Henderson, from the Irish Refugee Council, doubts that: