Your refund (or amount owed) is calculated like this:
| Original refund (or amount owed) |
| - Refund you already got (or tax due paid) |
| +/- Adjustments you made to your total tax |
| New refund (or amount owed) from the amendment |
Be sure to enter what you received or paid already on the
Personal > Amendment Information screen(s), so your amended refund is calculated correctly. If you've done this and made all of your amendment adjustments already, it's still possible to not have an additional refund or amount owed on your amendment.
Why didn't my amendment change my refund (or tax due) like I expected it to?