The National Treasury Management Agency (NTMA) has raised €3.75bn through the sale of a 15-year Treasury Bond today.
The funds were raised at a yield of 2.487% and will mature in May 2030.
The order book included interest from more than 250 accounts including fund managers, pension funds, insurance companies, banks and other investors.
The total book amounted to some €8.4bn.
Ireland's last 15-year bond sale was in 2009 and the yield represents a historical low for 15-year issuance by Ireland.
NTMA Chief Executive John Corrigan said: "The strong demand from investors globally for this longer dated bond, our first 15-year maturity since 2009, demonstrates that Ireland has consolidated and enhanced its market access since making a successful return to the international debt markets earlier this year."