Are you needing to add more tax information to it? If you filed and left off important tax information, then yes, you can amend after accepted and you've received refund. You can go here <a rel="nofollow" target="_blank" href="
https://ttlc.intuit.com/questions/1908543">https://ttlc.intuit.com/questions/1908543</a> and it will show you reasons you'd need to amend your return and reasons you would not.
