Section 1256 Contracts: The 60/40 Tax Rule for Index Options Traders

Summary

Section 1256 contracts receive automatic 60/40 tax treatment: 60% of gains are taxed at the long-term capital gains rate (max 20%) and 40% at the short-term rate (up to 37%), regardless of how long you held the position. This applies to options on broad-based indices like SPX, RUT, and VIX. The blended maximum rate is approximately 26.8% versus 37% for regular short-term gains—a significant savings for active traders.

Key Takeaways

SPX options, RUT options, and VIX options qualify for Section 1256 treatment. SPY options do not because SPY is an ETF, not an index. Section 1256 contracts are also marked to market at year-end, meaning all open positions are treated as if sold on December 31. Losses on 1256 contracts can be carried back 3 years against prior 1256 gains—a unique benefit no other capital loss offers.

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If you trade SPY options and haven't considered switching to SPX, the tax savings alone might change your mind. The 60/40 rule can save you 10+ percentage points on every dollar of profit.

What Qualifies as a Section 1256 Contract

Qualified (60/40 treatment):

  • SPX options (S&P 500 index options, cash-settled)
  • XSP options (mini-SPX, cash-settled)
  • RUT options (Russell 2000 index)
  • VIX options
  • NDX options (Nasdaq 100 index)
  • Regulated futures contracts (ES, NQ, etc.)

    • Not qualified:

  • SPY options (ETF, not an index)
  • QQQ options (ETF)
  • IWM options (ETF)
  • Individual stock options (AAPL, TSLA, etc.)
  • SPDR sector ETF options

    • The key distinction: the option must be on a broad-based index itself, not on an ETF that tracks the index.

    The 60/40 Math

    On $100,000 of options profit:

    Regular short-term treatment (SPY options):

  • 100% taxed at 37% = $37,000 tax

    • Section 1256 treatment (SPX options):

  • 60% × $100,000 = $60,000 at 20% = $12,000
  • 40% × $100,000 = $40,000 at 37% = $14,800
  • Total tax = $26,800

    • Savings: $10,200 on $100,000 of profit. For a trader making $200,000 annually from options, that's over $20,000 in tax savings every year.

    Mark-to-Market at Year-End

    Section 1256 contracts use mandatory mark-to-market accounting. On December 31, all open 1256 positions are treated as if you sold and immediately repurchased them at fair market value. This means:

  • You recognize gains or losses on open positions you haven't actually closed
  • You can't defer unrealized gains into the next year
  • Your starting basis in January equals the December 31 mark-to-market value

    • Example: You sell 5 SPX $5,800 puts on December 20 for $15,000 credit. On December 31, those puts are worth $8,000 to buy back. You recognize a $7,000 gain for the current tax year, even though the trade is still open. In January, your cost basis resets to $8,000.

    The 3-Year Loss Carryback

    This is one of the most valuable and least-known tax benefits for options traders. If you have a net Section 1256 loss in 2025, you can carry it back against Section 1256 gains in 2024, 2023, or 2022 (in that order). You file an amended return and get a refund.

    This is unique to 1256 contracts. Regular capital losses can only be carried forward, never back.

    Example: You made $80,000 in SPX options profits in 2024. In 2025, a market crash causes $50,000 in SPX options losses. You can amend your 2024 return, offsetting $50,000 of the prior year's gains and receiving a refund of approximately $13,400.

    How to Report Section 1256 Contracts

    Use Form 6781 (Gains and Losses from Section 1256 Contracts and Straddles). Your broker provides the aggregate gain or loss on your 1099-B, but you must complete Form 6781 to get the 60/40 split.

    Steps:

  • Enter net gain or loss from all 1256 contracts on Form 6781, Part I
  • The form automatically splits 60% to line 8 (long-term) and 40% to line 9 (short-term)
  • Transfer these amounts to Schedule D

    • SPX vs. SPY: The Decision

    If you currently trade SPY options, consider SPX (or XSP for smaller size). The strategies are nearly identical—credit spreads, iron condors, directional plays—but the tax treatment is dramatically different. The cash-settlement feature of SPX also eliminates assignment risk. Track your SPX trades with OptionsPilot to monitor total premium collected and estimate your tax savings versus SPY.