I live in Florida and work in Georgia until my company officially made it work remote in 2021 during October. I had my employer change my state on my paycheck to Florida, which has no state income tax at this time. I know I need to report my earned income in Georgia one more year via state nonresident filing. However, I also had a lot of unearned income(dividends/stocks/etc). Should I allocate that income strictly on when it was received during the year(before October-report as Georgia income) or allocate it over the whole year based on number of days nonresident of GA?
Allocating unearned income is pretty straightforward: just allocate it to the state you were a resident of when you received it. Stock sales are allocated to the state when you received it. Interest and dividends may be split. Here are some examples to help you allocate your unearned income.
Please see How do I allocate (split) income for a part-year state return?