Schapelle Corby would have to pay back any money earned from a media interview under a decade-old federal law.
The Queensland government is investigating how it can stop her from benefiting financially from selling her story about spending nine years in an Indonesian jail for marijuana smuggling.
It follows speculation the 36-year-old former Gold Coast beauty therapist has secured a A$2 million deal with the Seven Network.
But regardless of what the state government does, federal authorities have the power to confiscate her earnings under laws which came into effect in January 2003.
The commonwealth Proceeds of Crime Act refers specifically to literary proceeds, derived from someone selling their story or "criminal notoriety" about something they've done.