Not Year Specific
Form 1040X is not year-specific—you must specify the year for which the amended return is being prepared.
Form 1040X has three columns:
- Column A is used to show the original or IRS-adjusted figures from the original return or previous amendment
- Column C is used to show the entries that would have been made on the original return if it had been done correctly
- Column B (Net change) shows the differences between the figures in columns A and C
Amended returns can be prepared using tax software. However, they cannot be filed electronically.