Hi there! AZ Form 309 is needed in certain situations. https://ttlc.intuit.com/replies/6889144 contains a bit more on this. In addition to see the actual form you can go to https://azdor.gov/forms/tax-credits-forms/credit-taxes-paid-another-state-or-country. This form is only needed if you paid net income taxes to a state other than AZ (or another country) and are filing a return for that state.
