We filed our 2017 taxes late last year so we didn't have an AGI number. When we filed today the federal didn't go through because we didn't e-file last year what do I do

[DoninGA]

Try entering a 0 (zero) for the 2017 AGI when e-filing the tax return.

[rockdad]

I tried that and it was still rejected.what now

[rockdad]

What do I do if I've already paid to have federal and state e-filed by TurboTax?

[DoninGA]

@rockdad If you are using the TurboTax online editions there are no e-file charges, federal or state.  The TurboTax account fees are for the use of the software to assist in completing the tax returns.  The fees are the same whether a tax return is e-filed or printed for mailing.

[rockdad]

I was charged 20 some odd dollars to file by e-mail besides the cost of the software

[rockdad]

If we paid our federal taxes through an account application on your site and now we have to mail in our return is there a way to still use that payment procedure

[DoninGA]

What method did select and use to pay the federal taxes owed?  
Direct debit from your bank account?  Credit Card payment?  Pay by check with a voucher?  Pay directly on the IRS payment website?

[rockdad]

on the 2017 we paid by check

[DoninGA]

You can pay by check for the 2018 federal taxes owed with the payment voucher, Form 1040-V.  Just select that form of payment in Step 2 of the File section.

[DoninGA]

Since the e-filed return continues to be rejected by the IRS for the 2017 AGI, then you have to print and mail the tax return.

See this TurboTax support FAQ for printing a tax return for mailing when using the online editions - https://ttlc.intuit.com/questions/1944348-how-do-i-print-and-mail-my-return-in-turbotax-online