Hi, after filing I found a 1099 that I forgot to input. I have now entered it and there is no change to my tax liability. Do I still need to file an amended return?
Yes you have to report it. ALL of your income must be reported on your tax return.
A 1040X cannot be e-filed. It must be printed and mailed. It will take about 4 months for the IRS to process an amended return. 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.
Wait about 3 weeks from mailing and you can check the status of your amended return: