No. Once the tax returns have been e-filed or mailed the IRS and state Department of Revenue, you are not able to make any changes. Once the IRS and state accept and process the returns, you are then able to amend them. You can follow the instructions in the following FAQ to amend your return.
Note: Instructions for amending your 2018 tax return will be available on or around March 7th, 2019.
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