The IMF announced the "immediate disbursement" of the funds after a review of Ireland's reform efforts.
The country has now received around 13 billion euros of a 23 billion euro program agreed in 2010.
The IMF had earlier praised Ireland's implementation of tough budget-cutting reforms, making the dispersal of this part of the loan a near-certainty.
IMF loans are usually contingent on Fund-approved reforms being put in place.
The IMF said the loan was "part of a financing package amounting to 85 billion euros (about $110.44 billion) also supported by Ireland's European partners."
What the stars mean:
★ Poor ★ ★ Promising ★★★ Good ★★★★ Very good ★★★★★ Exceptional