Newly released figures show that Queensland public servants have spent $5 million in international travel over the last 12 months. 

A spokesperson Treasurer Jackie Trad defended the Queensland Treasury Corporation spending $458,000 for 16 officials to travel internationally for various roadshows and conferences. 

"In a competitive global market, maintaining relationships and uncovering new investor interest in key regions and financial centres is critical for attracting ongoing investment to Queensland and into the offerings of Queensland Treasury Corporation," the spokesperson said.

The QTC had the second highest expenditure for government corporations, but a spokesperson for Ms Trad says the trips were to attract investments to Queensland.