A Texas-employed Texas resident works January to July in Texas before accepting a new job. With the new employer, the employee works their first two months in Florida (as an employee of the company's Florida office) and receives a bonus, then moves to New York in September, becoming a resident and employee of that state. What would be the tax allocation for the state of New York from the second W-2 - just on the income from September to December, proportionately for the amount of days spent in New York / total days worked with the second employer, or something else?
