You file a normal California resident return to report and pay income tax on all your world-wide income, no matter where it was earned.
If you have income that is “sourced” to another state, you may need to file a non-resident return for that state. In most cases, the source of income is where you were physically living or performing the work, not where the company was headquartered. So working for an Ohio company is not Ohio income unless you were actually living or working in Ohio at the time.
In TurboTax, prepare the no -resident state returns first. That information will flow to the California return to calculate the offsetting credit.
