Australia's Alex de Minaur overpowered Emil Ruusuvuori 6-4 6-3 after Alexei Popyrin beat Otto Virtanen 7-6(5) 6-2 to earn the 28-times Davis Cup champions a 2-0 win over Finland on Friday that sent them into a second successive final.
Lleyton Hewitt's team, who lost to Canada in the 2022 final and missed the opportunity to close in on 32-times champions the United States, will face Serbia or Italy who meet in the second semi-final on Saturday.
Giant-killers Finland were the only country left in Malaga to have not won a Davis Cup crown after the Netherlands lost to Italy but their quest to make a first final in the elite men's team competition ended with a whimper.