Keep records that support your loss. Keep records that show that the stock is no longer traded, has declared bankruptcy, has no market value (if not publicly traded), or is in liquidation. This can include public records, news articles, or correspondence from the company itself.
Period of limitations that apply to income tax returns
- Keep records for 3 years if situations (4), (5), and (6) below do not apply to you.
- Keep records for 3 years from the date you filed your original return or 2 years from the date you paid the tax, whichever is later, if you file a claim for credit or refund after you file your return.
- Keep records for 7 years if you file a claim for a loss from worthless securities or bad debt deduction.
- Keep records for 6 years if you do not report income that you should report, and it is more than 25% of the gross income shown on your return.
- Keep records indefinitely if you do not file a return.
- Keep records indefinitely if you file a fraudulent return.
- Keep employment tax records for at least 4 years after the date that the tax becomes due or is paid, whichever is later.
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