After you file

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Step 4: Submit your amended return

Send the IRS your amended return. Beginning with the 2019 tax year, you can e-file federal amended returns. For tax years prior to 2019, federal amended returns must be filed by mailing in a paper return. Before mailing your return to the IRS, double check that you've attached all necessary forms and supporting documents. In the event your amendment results in a higher tax bill, you should include the additional tax payment with the return. By making a payment, you can minimize the amount of interest and penalties you may be subject to since technically, you are making a late payment of tax. It takes the IRS eight to twelve weeks to process your amendment, so give it some time before you contact them regarding your 

amended return.

https://turbotax.intuit.com/tax-tips/amend-return/how-to-file-an-amended-return-with-the-irs/L6kO691...