Fianna Fail is calling for the Public Accounts Committee to investigate the government's spending on external consultancy reports.

It's after it was revealed through a series of Parliamentary Questions that they've spent over €20m on such reports since coming to power.

It amounts to 532 consultancy reports across all departments.

The average spend is €37,000 on each, however some are much higher, with one report alone costing over €2.1m in the Department of the Environment.

Deputy Sean Fleming is Fianna Fail's spokesperson on public expenditure and reform and a member of the PAC: