The Iranian government says asylum seekers wishing to return to Iran must do so on their own terms and not be compelled.
Australian officials met with a senior delegation from Iran last week to discuss an agreement to return Iranians in detention.
A spokesman for the Iranian embassy told AAP on Wednesday there had been two rounds of talks this year, which had canvassed not only asylum seeker returns but how the two countries could co-operate on tourism, student exchanges and "consular issues".
But there had been no agreement so far.
"With respect to the Iranian asylum seekers, we reiterate that the policy of the Islamic Republic of Iran is based on giving its citizens the freedom to choose their place of residence and occupation," the spokesman said.
"If an Iranian asylum seeker wishes to return to the country, this must be completely on his or her own terms and without any compulsion."
More than 13,000 of the 52,000 asylum seekers who tried to come to Australia under Labor's watch were from Iran, most of whom had flown to Indonesia before destroying their travel documents and hiring people smugglers.
The federal government believes most of these are economic migrants rather than fleeing persecution.
Assurances have been sought from the Iranian government that returned people would be protected.
Human rights groups say asylum seekers who return to Iran are routinely questioned by authorities or arrested.
