Paddy McKiIlen has told the High Court in London that his total personal indebtedness to Bank of Scotland (Ireland) and IBRC is in the region of €360-370m.
The Belfast-born developer is suing the millionaire Barclay brothers in a dispute over ownership of three top London hotels.
Giving evidence today, Mr McKillen agreed that in 2011 his total exposure and that of Coroin, the company which controlled the hotels, was in the region of €1.6 billion.
He said no substantive loans to IBRC had been repaid since February 2011.
He said this was because of legal action in Dublin which he had been taking against NAMA. He said he had always met interest payments on the loans and that the IBRC and Bank of Scotland (Ireland) had been very supportive.
Mr McKillen said he owned property in Argentina, the US, Ireland, France, Dubai, Germany, the UK, Kazakhstan and Vietnam.
Counsel for the Barclay brothers put it to Mr McKillen that the developer did not want the Irish taxpayer to know that he had assets all over the world that could be liquidated to pay back the bank.
Mr McKillen said that was nonsense and described his relationship with IBRC's chief executive Mike Aynsley as excellent. Mr McKillen said that with the quality of his assets, the IBRC was 100% sure of getting 100% of their money back for the Irish taxpayer.