Amended
returns have to be printed and filed by mail. It can take the IRS up to
12 weeks or longer to process them. If you are due a larger refund than
on your original return, your amended return should only show the difference
and you will receive a separate check for it. If you owe money on your
amended return, it will show only the new amount owed, you will have to mail a
check with the return.
TurboTax Online has not yet opened up the amendment
process for 2017. Please see the attached information for updates.
https://ttlc.intuit.com/replies/3288565
