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Regulation

Wash Sale

US tax rule disallowing loss deduction if same security is repurchased within 30 days.

In depth

Designed to prevent tax-loss harvesting through fake sales. Disallowed loss is added to cost basis of replacement shares. Crypto is currently exempt (loophole that has survived multiple legislative attempts to close).

Frequently asked about Wash Sale

What is Wash Sale?

US tax rule disallowing loss deduction if same security is repurchased within 30 days. Designed to prevent tax-loss harvesting through fake sales. Disallowed loss is added to cost basis of replacement shares. Crypto is currently exempt (loophole that has survived multiple legislative attempts to close).

Why does Wash Sale matter for investors?

In regulation, Wash Sale is one of the building blocks investors use to compare opportunities and assess risk. Understanding it helps you read research notes, earnings reports, and market commentary without getting lost in jargon.

How is Wash Sale used in practice?

Designed to prevent tax-loss harvesting through fake sales. Disallowed loss is added to cost basis of replacement shares.

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