State tax filing

Which 183 day rule are you speaking of?     If you were only temporarily in Washington to do an internship, you are not a resident of WA.   If you leave your resident state with the intent on returning to that state after a work project, school or a long vacation, you are still a resident of the state you intend on returning home to.   From what you explained, it sounds like GA is your resident state for all of 2019.    However, I am not saying that you definitely were or were not a resident of any state.  You may be a part-year resident of both states.  

The Washington Department of Revenue presumes that a person is a resident of WA state if he or she does any of the following:

• Lives in a motor home or vessel which is not permanently attached to any property if the person previously lived in this state and does not have a permanent residence in any other state;
• Is registered to vote in this state;
• Receives benefits under one of Washington's public assistance programs;
• Has a state professional or business license in this state;
• Is attending school in this state and paying tuition as a Washington resident or is a custodial parent with a child attending a public school in this state;
• Uses a Washington address for federal or state taxes;
• Has a Washington State driver's license; or
• Claims Washington as a residence for obtaining a hunting or fishing license, eligibility to hold public office or for judicial actions.

Persons may rebut the presumption of residency if they provide other facts which show that they do not intend to reside in this state on either a temporary or permanent basis. A Washington resident who intends to move at a future date, however, will be considered a Washington resident.

If you made a permanent move to WA - you should file a part year resident GA return (WA does not have a state income tax).  If you went to WA temporarily and then returned home to GA, you should file a GA resident tax return.  

You are asked the questions in the personal information section (My Info) of TurboTax that will generate the correct state tax returns.  

What is my state residency status?   See this link for examples - each state has different rules.