I completed form1040x and paid amount owed online already. Do I mail the 1040x form also? Thank you

[AmyW]

Yes you will want to mail your amended tax return for it to be processed by the IRS. 

To print your amended return, follow the steps below:

https://ttlc.intuit.com/replies/5308030

When you mail Form 1040-X you should include the following forms:

• The new (amended) Form 1040
• Any forms or schedules that were added or changed as a result of preparing the amendment

Please note that 1040-X cannot be e-filed - you will need to mail a paper return.  It takes the IRS up to 16 weeks to process amended returns.  Also, depending on whether the changes affect your numbers, you may also be required to file an amended return with your state.  

The mailing address for your state and situation can be found at https://www.irs.gov/pub/irs-pdf/i1040x.pdf.  Look under Where to File on page 14.  

[jblsan]

So, I mail the amended form 1040x (which I have already printed) and should I include a note that I paid what was owed online?

[AmyW]

No, you won't need to include a note because they have already received the tax return.