A Sydney man, disturbed from time spent in Australian immigration detention as a child, has been jailed for financing Islamic State.

Ali Al-Talebi, was sentenced to a maximum of 12 years' jail and a minimum nine years on Monday for his role in sending $6000 to Pakistan in 2014, and attempting to send another $US9000.

The 27-year-old, who arrived on Christmas Island by boat as a 10-year-old, before being transferred to Curtin Detention Centre in Western Australia, did not react when Judge Robert Sutherland delivered the sentence in Penrith District Court.

Al-Talebi, originally from Iraq, was found guilty of two counts of supplying funds to a terrorist organisation after instructing a young associate to send two parcels of $3000 to Pakistan.

He was also convicted of one charge of attempting to make funds available to a terror organisation, relating to the $9000 in US bank notes that was never sent, due to a high transfer fee that the associate decided against paying.