Western Australia and the ACT are Australia's best-performing economies. New South Wales is the worst.
The states and territories have been judged on eight indicators over the last three months and rated according to what would be considered a normal performance for that economy.
CommSec's chief economist Craig James says WA's top ranking was driven by mining-related investment, while there has been solid housing construction in the ACT.
He says all the states that did well have strong economic drivers.
The ABC reports Tasmania and the Northern Territory were ranked third in the assessment, followed by South Australia, Queensland and Victoria.