Every StaxInvesting article tagged trading taxes · 4 posts.
4 articles
Index options and single-stock equity options look similar and behave as different classes of instrument. For a day trader, four differences decide between them: how they settle, whether you can be assigned, how they are taxed, and how they trade. This is the class-level comparison that ties the specifics together, and the honest synthesis of which class fits a day-trading process.
Broad-based index options such as SPX receive a tax treatment that equity options do not: Section 1256's 60/40 split, applied regardless of how briefly you held the position. This is a factual walkthrough of what the rule is, how it is reported, the two features most explainers omit, and where its advantages disappear. It is not tax advice, and the reasons a page like this cannot be are part of the explanation.
Most traders check the strike, the expiration, and the premium before entering an options trade, and never check how the contract settles. That single detail, cash versus physical, silently determines four separate things about the position: whether you can be assigned, how much capital you might suddenly need, whether early exercise is even possible, and how the gains are taxed. This is the pre-trade framework for reading settlement type before it reads you.
SPX and SPY both track the S&P 500, and for a 0DTE trader they are not the same instrument. The differences in settlement, exercise style, contract size, and tax treatment are large enough to change your after-tax return and your assignment risk. This is the complete side-by-side, including the two options most comparison pages leave out and an honest account of who SPX is actually wrong for.
