I filed my 2018 taxes as 2019 by accident. how do i fix this

[VolvoGirl]

You now have a problem.  You have to file each year separately.  Online is only for 2019.  You have to wait and see if your efile gets accepted.   If they reject it for something you can change it around to be only for 2019

But if they accept it you need to wait some more for it to fully process and you get the first refund.  Then you need to Mail in an Amended 1040X return to change it to be for 2019.

You can check your efile status here   https://turbotax.intuit.com/tax-tools/efile-status-lookup/

How to amend an Online return

https://ttlc.intuit.com/community/amending/help/how-do-i-amend-my-turbotax-online-return/00/

Amended returns can only be MAILED not efiled. 

Then You still need to do 2018.  To do 2018 you have to buy the Desktop Download program here

https://turbotax.intuit.com/personal-taxes/past-years-products/     

Or If you have a simple return You can fill out the blank forms for free.

Here is the IRS 2018 Form 1040

https://www.irs.gov/pub/irs-prior/f1040--2018.pdf

And instructions  https://www.irs.gov/pub/irs-prior/i1040gi--2018.pdf

2018 Tax and EIC Tables https://www.irs.gov/pub/irs-prior/i1040tt--2018.pdf

IRS 2018  Schedules 1 thru 6 (only if needed)

https://www.irs.gov/pub/irs-prior/f1040s1--2018.pdf

https://www.irs.gov/pub/irs-prior/f1040s2--2018.pdf

https://www.irs.gov/pub/irs-prior/f1040s3--2018.pdf

https://www.irs.gov/pub/irs-prior/f1040s4--2018.pdf

https://www.irs.gov/pub/irs-prior/f1040s5--2018.pdf

https://www.irs.gov/pub/irs-prior/f1040s6--2018.pdf

Don’t forget your state.  And you will have to print and mail your returns.  So be sure to attach copies of your W2s and any 1099s that have withholding on them.  You have to mail federal and state in separate envelopes because they go to different places.  Get a tracking number from the post office when you mail them for proof of filing.

[Critter]

OK if you used the 2019 program and accidentally entered the 2018 income then you must WAIT ...

If the return is rejected you can correct the input to 2019 and file again.  The 2018 return must still be filed by mailing it in and using the 2018 program to complete it.

If the return is accepted then you will WAIT LONGER ... if the IRS catches the error they will send you a letter.  If they don't you will amend the return when the original return has fully processed and the refund is in hand.  

You can file a correct 2018 return anytime ... you do not have to wait on the 2019 return ...

Prior year returns can only be done using desktop software and the returns must be mailed in.

If you need to prepare a return for 2016, 2017, or 2018 you can purchase and download desktop software to do it, then print, sign,  and mail the return(s)

https://turbotax.intuit.com/personal-taxes/past-years-products/

Remember to prepare your state return as well—if you live in a state that has a state income tax.

When you mail a tax return, you need to attach any documents showing tax withheld, such as your W-2’s or any 1099’s.  Use a mailing service that will track it, such as UPS or certified mail so you will know the IRS/state received the return.

Note:  The desktop software you need to prepare the prior year return must be installed/downloaded to a full PC or Mac.  It cannot be used on a mobile device.

If you are getting a refund, there is not a penalty for filing past the deadline.  If you owe taxes, the interest/penalties will be calculated by the IRS based on how much you owe and when they receive your return and payment. The IRS will bill you for this; it will not be calculated by TurboTax.