@TBF205860 generally, the earned income is sourced where the work is done -0- there are of course exceptions. But in your case
1. You a resident of OH,working in OH, for a remote employer in WA --- you file a resident return for OH, you did not earn anything ( in this case ) in another state.
2. this remote employer income is treated as sole proprietor/self-employment income. It is reported on Schedule-C, you get to deduct all necessary and allowable expenses for this money stream. Note this means that your contractee/ employer is not withholding any taxes ( including FICA), thus you have to make quarterly payments for federal and state taxes. Additionally, you also have to pay the Self-Employment Tax ( equivalent to wage earner's FICA) at 15.3% on the net income i.e after expenses. For employees, the employer and the employee each pay at 50% or 7.65% towards FICA / Social Security-Medicare. So you need to make sure that your income from this stream allows for the extra 7.65% hit that you will have because of this.
3. The WA company does not have to register in OH because you are a contractor to them
4. see answer to question 2.
Hope this helps
