🧮 Wash Sale Date Calculator

Easily calculate wash sale dates and view disallowed window on a calendar.

What is the Wash Sale Rule?

The IRS wash sale rule prevents taxpayers from claiming a capital loss on the sale of a security if they buy the same or a "substantially identical" security within 30 days before or 30 days after the sale (a 61-day window including the sale date). If triggered, the disallowed loss is typically added to the cost basis of the replacement shares. This calculator helps identify the restricted period based on your sale date.

Note: Determining what constitutes a "substantially identical" security (e.g., options, different share classes) can be complex and is not covered by this calculator.

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Disclaimer: This tool is for informational purposes only and does not constitute financial or tax advice. Consult with a qualified professional for advice specific to your situation.

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