Over €250m will be paid out to lawyers representing people who were sexually and physically abused in religious institutions.
Under the compensation scheme set up, lawyers fees account for nearly 20% of the overall cost.
The total cost of the redress scheme is now put at around €1.3bn.
Over €700m has already been paid out, including almost €100m in legal costs.
The work of the board set up to hear cases and award compensation will not be completed until 2010.