Tax Rules for Options Trading: Section 1256 and Equity Options

Two traders each make $100,000 trading options on the S&P 500 in a single year. One trades SPX index options; the other trades SPY ETF options. Same underlying exposure, same profit, same holding periods — but the SPX trader pays roughly $23,000 in federal tax while the SPY trader pays $40,800. The $17,800 difference comes entirely from Section 1256 of the tax code, and it's one of the most consequential distinctions in active trading.

TL;DR: Index options on broad-based indices (SPX, NDX, RUT) qualify as Section 1256 contracts and receive automatic 60/40 tax treatment — 60% long-term, 40% short-term — regardless of holding period. Equity and ETF options (including SPY) don't qualify and are taxed based on actual holding period, which means short-term rates for most active strategies. Understanding which products qualify can save five figures annually.

Section 1256 Contracts: The 60/40 Advantage

Section 1256 of the Internal Revenue Code provides preferential tax treatment for specific categories of financial contracts. The core benefit is the 60/40 rule: all gains and losses are automatically split into 60% long-term and 40% short-term, regardless of how long you actually held the position.

For a trader in the 37% federal bracket (plus 3.8% NIIT), the blended rate works out to:

• 60% at long-term rate: 60% × 23.8% = 14.28%
• 40% at short-term rate: 40% × 40.8% = 16.32%
• Blended effective rate: 30.6%

Compare that to the full short-term rate of 40.8% on equity options held for days or weeks. The 60/40 rule saves roughly 10 percentage points on every dollar of profit.

What Qualifies as a Section 1256 Contract

The point is: the distinction isn't about the underlying exposure — it's about the product structure. SPX and SPY options provide nearly identical economic exposure to the S&P 500, but SPX qualifies for 60/40 treatment and SPY doesn't. This makes product selection a tax decision, not just a trading decision.

KEY INSIGHT: The Cboe explicitly markets SPX options' Section 1256 tax treatment as a key advantage over ETF options. For active traders doing more than a few trades per month, the tax savings from switching to index options can exceed the difference in bid-ask spreads and commissions.

Mark-to-Market: Year-End Tax on Unrealized Gains

Section 1256 contracts come with a trade-off: they are subject to mark-to-market at year-end. Under IRC §1256(a)(1), all open Section 1256 positions on December 31 are treated as if you sold them at fair market value on that date.

This means:

• Unrealized gains are taxed in the year they accrue, even if you haven't closed the position
• Unrealized losses are deductible — you don't need to close a losing position to claim the loss
• Your basis in the contract is adjusted to the year-end FMV, so you don't get taxed twice when you eventually close

For most active options traders, positions are short-lived enough that mark-to-market has minimal impact. But if you hold longer-dated LEAPS on index options or carry futures positions over year-end, the mark-to-market rule creates a current-year tax liability on paper gains you haven't realized.

Equity Options: Tax Rules Based on Outcome

Options on individual stocks and ETFs follow a completely different tax framework. The tax treatment depends on what happens to the option — whether it expires, gets exercised, or gets closed.

Options That Expire Worthless

Long options (calls or puts) that expire worthless:

• The premium you paid is a capital loss
• Short-term or long-term depends on how long you held the option (from purchase to expiration)
• Most options expire within weeks or months → short-term capital loss

Short options (calls or puts) that expire worthless:

• The premium you received is a short-term capital gain — always short-term, regardless of how long the position was open
• This is a peculiarity of the tax code: written options that expire are treated as short-term gains even if the contract was open for over a year

Options That Are Closed Before Expiration

When you sell an option you bought (or buy back an option you wrote), the gain or loss depends on the difference between your opening and closing premiums. The holding period runs from the date you opened to the date you closed.

For actively traded strategies where positions last days to weeks, virtually all gains are short-term — taxed at your full marginal rate.

Options That Are Exercised or Assigned

Long call exercised: Your call premium is added to the cost basis of the acquired stock. No gain or loss is recognized on the option itself — the tax event is deferred until you sell the stock. Your holding period for the stock starts on the day after exercise.

Long put exercised: Your put premium reduces the sale proceeds of the underlying stock. Again, no separate gain/loss on the option.

Short call assigned: The call premium is added to the sale proceeds of the stock you deliver. If you already owned the shares (covered call), the gain or loss depends on your stock's cost basis and holding period.

Short put assigned: The put premium reduces your cost basis in the stock you're obligated to buy. Your holding period starts the day after assignment.

Why this matters: exercise and assignment create basis adjustments, not separate tax events. Many traders make errors by reporting the option and stock transactions separately instead of combining them.

Covered Calls: Qualified vs Unqualified (The Holding Period Trap)

Writing covered calls introduces a special complication. If your covered call is unqualified under IRS rules, it can suspend or terminate the holding period of the underlying stock — potentially converting a long-term gain into a short-term gain.

Qualified Covered Calls

A covered call is qualified if it meets specific strike price requirements relative to the stock price and time to expiration. Generally:

• The strike price must be above the prior day's closing price (for options with more than 30 days to expiration)
• The further in-the-money the call, the more likely it's unqualified
• Deep-in-the-money calls are almost always unqualified

Unqualified Covered Calls

If you write an unqualified covered call against stock you've held for less than a year, your holding period is suspended for as long as the call is open. If the stock was already long-term, writing an unqualified call can retroactively convert it to short-term if the call is deep enough in the money.

The test: if the covered call's strike is at or below your stock's cost basis, it's almost certainly unqualified. Stick to out-of-the-money or slightly in-the-money calls with more than 30 days to expiration to stay in qualified territory.

REMEMBER: Writing a deep-in-the-money covered call on stock you've held for 11 months can reset the holding period clock, converting your gain from long-term (15-20%) to short-term (up to 37%). The premium collected rarely compensates for this tax cost.

Protective Puts and Holding Period Suspension

Buying a put option to protect a stock position can suspend your stock's holding period under the straddle rules of IRC Section 1092. If you buy a put on stock you've held for less than one year, your holding period is frozen for as long as the put is in place.

Example: You buy stock on March 1 and simultaneously buy a protective put. You sell the put on June 1 (3 months later) and sell the stock on March 15 of the following year. Even though you held the stock for over 12 calendar months, your holding period only counts the time the put wasn't in place — so roughly 9 months of "unprotected" holding. The gain is short-term.

Straddle Loss Deferral Rules (Section 1092)

When you hold offsetting positions (straddles), losses on one leg cannot be deducted to the extent you have unrealized gains on the offsetting position. The deferred loss is added to the basis of the remaining position.

This affects strategies like:

• Long straddles and strangles — closing the losing leg while the winning leg is still open defers the loss
• Calendar spreads — the short-term loss may be deferred against the long-term leg
• Convertible bond + short stock positions

The point is: if you trade multi-leg options strategies, your realized losses may not be immediately deductible. Track each position's unrealized gain/loss at the time you close any leg.

The Three-Year Loss Carryback (Section 1256 Bonus)

Section 1256 contracts have a unique loss provision: net Section 1256 losses can be carried back three years to offset Section 1256 gains in prior years. This is filed on Form 6781 and can generate a refund of taxes paid in prior years.

This is powerful in volatile markets. If you had profitable index option trading in 2022-2024 and a large loss in 2025, you can carry the 2025 loss back and amend prior returns to reclaim taxes paid on those earlier gains.

No other type of capital loss offers a carryback — ordinary capital losses can only carry forward.

Form 6781: Where Section 1256 Lives

Section 1256 gains and losses are reported on Form 6781 (Gains and Losses From Section 1256 Contracts and Straddles):

• Part I: Report all Section 1256 contract gains and losses (including mark-to-market)
• The form automatically applies the 60/40 split
• Line 8: Net 1256 gain flows to Schedule D as 60% long-term / 40% short-term
• Part II: Reports straddle gains and losses under Section 1092

Equity options don't go on Form 6781 — they're reported on Form 8949 like any other capital asset.

Wash Sale Interaction with Options

The wash sale rule applies to options, adding another layer of complexity:

• Selling stock at a loss and buying a call option on the same stock within 30 days triggers a wash sale
• Closing a long option at a loss and opening a new option on the same underlying can trigger a wash sale if the options are "substantially identical" (same strike, similar expiration)
• Section 1256 contracts are exempt from wash sale rules — another advantage of index options over equity options

Action Checklist

Essential (know what you're trading)

• Identify which products qualify for Section 1256 — index options (SPX, NDX, RUT) and futures, not ETF options
• Track each option's outcome — expired, closed, exercised, assigned — because the tax treatment differs for each
• File Form 6781 if you trade any Section 1256 contracts

High-Impact (reduce options tax burden)

• Consider SPX options instead of SPY options for S&P 500 exposure — same economic profile, much better tax treatment
• Avoid unqualified covered calls on stock approaching long-term status — the holding period suspension can cost more than the premium
• Don't buy protective puts on stock within 12 months of purchase if you want long-term treatment

Optional (for active and professional traders)

• Model the 60/40 tax savings against any liquidity/spread disadvantages of index vs. ETF options
• Track straddle positions for Section 1092 loss deferral — don't assume closed losses are immediately deductible
• Review prior-year 1256 gains if you have a current-year 1256 loss — the three-year carryback can generate refunds

Your Next Step

Review your options trading activity from the past 12 months. Separate your trades into Section 1256 contracts (index options, futures) and equity/ETF options. If more than half your volume is in ETF options like SPY or QQQ, model the tax savings from switching to SPX or NDX options — the 60/40 rule could save you thousands annually with no change to your trading strategy.