You have not told us how long ago you amended your 2018 return. If it was any time in 2020, see below:
The IRS has not been working on mailed returns until very recently---and an amended return could only be filed by mailing it in until late August 2020 when the IRS began to accept e-filed 2019 amended returns. Under normal circumstances you would be able to see something about your mailed in Form 1040X after about three weeks, but that is not the case right now. The usual 4 months for processing an amended return is going to take longer. Sorry.
https://www.cnn.com/2020/04/20/politics/irs-mail-trailers-covid/index.html
MAILED RETURNS
Per the IRS website IRS Operations During COVID-19: Mission-critical functions continue:
IRS operational status and alternatives
Processing Delays for Paper Tax Returns: Taxpayers should file electronically through their tax preparer, tax software provider, or IRS Free File.
We’re experiencing delays in processing paper tax returns due to limited staffing. If you already filed a paper return, we will process it in the order we received it.
Do not file a second tax return or contact the IRS about the status of your return.
If you mail a tax return (or a payment) to the IRS, it is a good idea to use a mailing service that will track it like UPS or certified mail so you will know it was received.
TurboTax will not know anything about your amended return, and nor will TT know that you put your 1040X in an envelope and took it to a mailbox. TurboTax does not get updates on mailed (or e-filed) returns.
When the IRS finally opens its mail and begins to process mailed returns you can check the status on the IRS site.
https://www.irs.gov/Filing/Individuals/Amended-Returns-(Form-1040-X)/Wheres-My-Amended-Return-1
https://www.irs.gov/filing/individuals/amended-returns-form-1040-x/amended-return-frequently-asked-q...
As for your banking information---if you are getting a refund for the amended return the IRS does not make direct deposits for amended return refunds. They will only mail a check to the address you used on the return. If you moved then you need to send a change of address to the IRS and make sure that the post office has your forwarding address.
https://www.irs.gov/pub/irs-pdf/f8822.pdf
**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**
