0DTE Wash Sale Rule

Whether you're new to zero-days-to-expiration or scaling an existing approach, understanding the fundamentals of trading 0DTE options is essential before you trade live capital. This guide covers If you are day trading options, understanding the 0DTE wash sale rule is critical. Failing to grasp this IRS rule can result in a massive tax bill at the end of the year, even if your account is largely unprofitable.

What Is the Wash Sale Rule?

The wash sale rule is an IRS regulation (in the United States) designed to prevent taxpayers from artificially creating tax losses. It states that if you sell a security at a loss and buy a "substantially identical" security within 30 days before or after the sale, you cannot claim the loss on your current taxes. Instead, the loss is added to the cost basis of the new position.

Does the 30-Day Rule Apply to 0DTE?

Yes, the wash sale rule applies to equity and ETF options, including 0DTE options. If you trade SPY 0DTE options, take a loss, and then trade another SPY 0DTE option (at a similar strike and expiration) within 30 days, your broker will likely flag it as a wash sale. Because day traders place hundreds of trades a month on the same ETF, these wash sales can snowball rapidly, disallowing all of your losses until you stop trading the ticker for 31 days.

Index Options Exception (Section 1256)

Here is the most important tax secret for 0DTE traders: the wash sale rule does not apply to Section 1256 contracts. Broad-based index options like SPX, NDX, and RUT fall under Section 1256.

This means you can trade SPX 0DTE multiple times a day, take losses, and those losses are fully deductible immediately—no wash sales apply. This is a primary reason professional traders prefer SPX over SPY.

How to Report 0DTE Trades

For Section 1256 contracts (like SPX), you do not need to report every single trade on Form 8949. Instead, your broker will provide a single consolidated Form 1099-B at the end of the year showing your net profit or loss, which is reported on Form 6781. For ETF options (like SPY), every trade must be accounted for, and wash sales will be tracked. Learn more about 0DTE tax implications.

Tax Strategies for 0DTE

If you trade SPY or QQQ 0DTE, you must employ a strategy to clear your wash sales before the end of the tax year. This typically involves ceasing all trading in those specific ETFs by late November and not trading them again until January, ensuring a full 31-day window where you hold no positions.

Frequently Asked Questions