The key difference between 189 and 190 visa lies in sponsorship. The 189 visa is a points-tested independent skilled visa, requiring no sponsorship and allowing you to live anywhere in Australia. In contrast, the 190 visa is a state-nominated skilled visa, requiring nomination by an Australian state or territory, and often involves a commitment to live in that state for a certain period after arrival.
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Skilled Independent Visa vs. State Sponsored Visa (Subclass 190)
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Skilled Independent Visa vs. State Sponsored Visa (Subclass 190)

Subclass 189 is for skilled workers without sponsorship, offering full work rights in Australia. Subclass 190 requires state nomination, with added residency rules.