The charges against Beran A, who is the main suspect in the case, were announced on Monday by the Vienna prosecutor’s office.
According to the indictment, he had received online instructions and worked to make a shrapnel bomb using the explosive triacetone triperoxide (TATP).
The type of shrapnel bomb was “specific to IS attacks”, the statement said.
He is also believed to have sought advice from IS members on how to carry out a bomb attack.
Beran A has not commented on the latest developments.
The US foreign intelligence service said back in 2024 that the plotters had hoped to kill a large number of concert-goers.
Investigators alleged Beran A had also planned to carry out an earlier attack in Dubai in March 2024.
Reports at the time suggested it was part of a co-ordinated plot involving three simultaneous IS attacks but he had changed his mind at the last minute.
In a post on social media two years ago, Swift described the cancellation of her Vienna tour dates as “devastating”.
“But I was also so grateful to the authorities because thanks to them, we were grieving concerts and not lives,” she added.