I filed my 2018 federal return I didn't file my state return why when I downloaded 2018 return the state was at the bottom & does that mean their complete????

Not necessarily.

Having the state forms in the PDF  download only means that you at least started working on your state taxes, and perhaps paid for the state software...but it does not mean they were actually filed.

Only you would know if you ever completed pushing the proper buttons to actually file the state forms.

You might look at the state forms in the PDF state section to see if there is a filing instructions sheet...that might indicate what you did....but if it's not there, there is no way for any of us to tell you whether you filed or not.

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Of course, if your state has sent you a letter asking you about not filing...then it's likely that you didn't file them.

1)  IF you think the state forms are complete you could mail them in to your state dept of revenue...signed and dated...along with any tax forms showing state withholding

or

2)  IF not fully prepared/completed yet, you would have to buy/download/install the 2018 desktop software on a full MAC or Windows computer....download your datafile (ending .tax2018 )  from yoru online account, then complete the state section...print....and mail it in to the state.

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2018 desktop tax software here:

TurboTax® 2018 Tax Software for Filing Past Years’ Taxes, Prior Year Tax Preparation (intuit.com)