Generally, you would owe Detroit tax for the time you were a resident. Only allocate that time frame to Detroit. The rest of the earnings are non-Detroit.
You will be filing Form 5120, City of Detroit Part-Year Resident Income Tax Return. Click the link for the Part Year Detroit Resident Tax Return Instructions. This link is for Form 5120 so you can see what form will be filed.
To review what is entered in TurboTax:
From left menu>State>Continue>Michigan click Edit>Go Over Michigan>
Which Cities Did you Live or Work in?>Check the box for I need a Detroit City return and I file as a Detroit Part-year Resident.
There will be a series of questions you can answer if you haven't already and/or click Continue through these>
On the screen A few things before we wrap up your state taxes Click Revisit next to Michigan city tax>verify you have a check next to Detroit>Continue>I file as a part-year resident>Continue>Enter the dates you lived in Detroit and click Continue and/or update the rest of the questions.
When you are ready to file, TurboTax electronically files Michigan and Detroit.
Double-check your PDF of your returns to see that it was sent when you save your 2019 tax files. TurboTax will walk you through that process when you e-file.
