The €200m Government scheme aimed at helping viable but vulnerable businesses in manufacturing and internationally traded services whose activities have been impacted by the Ukraine war is being extended.
Aid levels are also to increase as part of the changes to the Ukraine Enterprise Crisis Scheme.
The first stream, which assists firms suffering liquidity problems, has been extended to the end of December this year.
While the second stream, which helps those impacted by severe rises in energy costs, has been extended to the end of March next year.
"The amended Ukraine Enterprise Crisis Scheme will continue to support businesses impacted by energy price rises and other direct consequences of the war in Ukraine, and will require evidence of a strong focus on companies' plans for future energy efficiency," said chief executive of Enterprise Ireland, Leo Clancy.
The scheme provides a minimum of €20,000 and a maximum of €500,000 under stream one.
Up to €2 million is available under stream two for energy intensive firms.
Under the revised scheme the aid levels are to be increased to €2 million and €4 million respectively.
"The Government continues to monitor the adverse effects of Russia’s illegal war of aggression in Ukraine on our economy," said Minister for Enterprise, Trade and Employment, Simon Coveney.
"We are acutely aware of the impact the situation in Ukraine is having on Irish businesses in terms of trading difficulties as well as the impact on energy costs."
"The amended Ukraine Enterprise Crisis Scheme will continue to assist companies most exposed to and suffering the broader effects of the war in Ukraine."