Definition, Procedure, and Purpose of Wash Sale

What Is a Wash Sale?
A wash sale refers to a transaction where an investor sells or trades a security at a loss and then acquires “a substantially similar one” within 30 days before or after the sale. This rule, established by the Internal Revenue Service (IRS), aims to prevent investors from leveraging capital losses for tax advantages.
The wash sale rule is not limited to stocks but encompasses contracts, options, and all other types of securities and trading.
Key Takeaways
- A wash sale occurs when an investor buys a security 30 days before or after selling an identical or similar security.
- The IRS implemented the wash sale rule to hinder taxpayers from exploiting it to reduce tax liability.
- Investors who sell a security at a loss cannot report it if they have purchased the same or a similar security within 30 days of the sale.
Understanding a Wash Sale
In many countries, tax laws permit investors to claim a specific amount of capital losses on their taxes to reduce their income. In the U.S., individuals can claim up to $3,000 or their total net loss, whichever is lesser. Excess losses can be rolled forward to subsequent years.
Investors exploited the ability to carry over losses by engaging in a practice of selling a losing security and repurchasing it shortly after to claim a capital loss and mitigate tax obligations.
To curb this manipulation, the IRS introduced the Wash Sale Rule in the U.S. (known as bed-and-breakfasting in the U.K.), which disallows losses from a sale if an investor buys the security within 30 days before or after selling it. This eliminates the incentive for short-term wash sales.
How It Works
A wash sale typically involves three steps.
- An investor identifies a losing position and closes it by selling the stock or exiting a trading position.
- The sale enables them to claim a loss on their tax returns, reducing their taxable income and overall tax liability.
- The investor aims to repurchase the security at or below the sale price; if this occurs within 30 days of the sale, it is classified as a wash sale, and the loss cannot be claimed.
Day traders, especially pattern day traders, may frequently encounter wash sales, which still apply to their transactions. Tax implications for day traders can be intricate, necessitating guidance from tax professionals.
Wash Sale Example
For instance, if an investor realizes a $15,000 capital gain from selling ABC stock but incurs a $7,000 loss from selling XYZ security, the net capital gain for tax purposes would be $8,000, resulting in a lower tax bill. However, repurchasing XYZ stock within 30 days of the sale would render the transaction a wash sale, disallowing the loss offset gain.
Special Considerations
The IRS typically does not consider bonds and preferred stock of an issuer as substantially identical to the company’s common stock. However, there are exceptions where preferred stock may be deemed substantially identical, such as when it is convertible into common stock under certain conditions.
According to Revenue Ruling 2008-5, IRA transactions can trigger the wash-sale rule, whereby selling shares in a non-retirement account and buying identical shares in an IRA within 30 days voids tax deductions and does not adjust the IRA basis.
Reporting a Wash Sale Loss
Losses from wash sales are not lost but are applied to the cost basis of the most recently purchased identical security, reducing future taxable gains. The holding period of wash sale securities is added to repurchased securities, enhancing chances of qualifying for favorable tax rates on long-term capital gains.
Tax-Lost Harvesting and Wash Sales
Tax-loss harvesting may unintentionally trigger wash sales if not properly managed. Investors need to be cautious when replacing securities to avoid wash sale violations and explore alternative investments that are similar but not substantially identical.
Wash Sales Are Not Illegal
The Wash Sale Window Extends 60 Days
Ways to Avoid a Wash Sale
The Bottom Line
A wash sale occurs when an investor sells a security at a loss and repurchases the same security within 30 days, before or after the initial sale. This rule prevents investors from claiming capital losses for tax deductions if they re-enter a similar position too quickly. While wash sales are not illegal, they have negative tax consequences: losses from such sales cannot offset gains in the same year but can adjust the cost basis of the new security, affecting future gains. Understanding and navigating the wash sale rule is crucial for effective tax planning and investment strategy, especially for day traders and investors seeking to leverage capital losses for tax mitigation.