TDs backed the Government motion by 93 votes to 36
TDs have voted in favour of plans to appeal the Apple tax ruling.
Fine Gael, Fianna Fáil, Labour and the Independent Alliance joined forces to back the appeal last night.
It was after Finance Minister Michael Noonan admitted to the Dáil he could not say how much it would cost.
TDs backed the Government motion by 93 votes to 36 after a 10-hour debate.
They also voted down five opposition counter-motions that would have either cancelled or delayed an appeal.
In the meantime, the Government must still recover the unpaid tax with interest.
The money is expected to be held in an escrow account until legal proceedings are finished.
It comes after the European Commission concluded, after a two-year investigation, that Ireland granted illegal state aid to the US tech giant.
The EU body found that Apple paid an effective corporate tax rate of just 0.005% in 2014 - a figure the company disputes.
But Mr Noonan insisted Ireland would win the appeal, as Apple's tax loophole was also available to everyone else.