It can take up to 16 weeks for the IRS to process your amended federal tax return and send your refund.
You can check the status of your amended return using one of the following:
Amended return information typically isn't available until at least 3 weeks after you file your amended return.
You can check the status of your original refund by using one of the following:
Refund information typically isn't available until at least 24 hours after you e-file your original return (or 4 weeks, if you mailed it).