Wash Sale Calculator
Determine if your stock trade triggers the IRS Wash Sale Rule, which disallows deducting a loss if you buy a "substantially identical" security within 30 days.
Check Wash Sale
$
Date
you bought similar stock
Did you replace all sold shares?
How It Works
The Wash Sale Rule prevents you from claiming a loss on a security if you buy a "substantially identical" security within 30 days before or after the sale.
The 61-Day Window
The restricted period is 61 days total: the day of the sale, the 30 days before, and the 30 days after.
Consequences
- You cannot deduct the loss on your current tax return.
- The disallowed loss is added to the cost basis of the new replacement stock.
- This defers the tax benefit until you sell the replacement stock.