The National Treasury Management Agency said it will auction €1 billion of 2027 and 2045 bonds on Thursday.
Thursday's auction will be the only auction the NTMA plans to hold in the third quarter of the year.
So far this year, the NTMA has issued €6 billion of benchmark bonds.
It has said it aims to raise between €7 billion and €11 billion this year on the back of a relatively low level of maturing debt and a large projected budget surplus.
