New figures from the Central Bank show that at the end of January, Irish residents - mostly companies and institutions - had an outstanding debt of €1.1 trillion.
Figures for issued debt securities indicate that €790bn worth of this debt is denominated in euro, while the remaining €270bn worth is denominated in foreign currencies.
Most of this amount - some €789.1bn - is accounted for by entities based in the IFSC, including companies involved in asset finance, securitisation and treasury management.
Irish financial institutions including banks account for €182.6bn of the debt securities, of which €46.8bn is in short term securities.
Irish Government debt at the end of January was €78bn, an increase of €6.7bn since the end of December, and reflecting a five billion Euro bond issue in January.
Irish pension funds and insurance companies account for €2.2bn of the outstanding debt instruments.
Around 9% of the outstanding debt is in the form of short-term instruments, mostly due for repayment this year.