How to Use Tax-Loss Harvesting with Options Before Year End

Tax-loss harvesting with options follows the same basic logic as with stocks: sell losing positions before December 31 to realize losses that offset gains. The mechanics for options require some additional care, particularly around the wash sale rule, which can disallow losses in ways that catch options traders off guard.

Before acting on any of this, consult a tax professional. Tax rules change and individual situations vary. This article covers the general mechanics — not personalized tax advice.

What Is Tax-Loss Harvesting?

Tax-loss harvesting is the practice of selling investments at a loss before year-end to reduce your taxable gains. If you have $5,000 in realized gains from options trades this year and you close a losing position for a $2,000 loss before December 31, your net taxable gain drops to $3,000.

For options traders who have had profitable years, this can meaningfully reduce the tax bill. The strategy is mechanical — it does not require predicting market direction, just reviewing your open positions and deciding which losses are worth locking in.

The Wash Sale Rule: What Options Traders Need to Know

The wash sale rule is the main complication. Under IRS rules, if you sell a security at a loss and buy the same or "substantially identical" security within 30 days before or after the sale, the loss is disallowed. The loss is not gone forever — it gets added to the cost basis of the replacement security — but it cannot reduce your current year's taxable income.

For options traders, the wash sale rule applies in several ways:

Options on the Same Underlying

If you sell a stock or ETF at a loss and simultaneously hold or buy options on that same underlying, the IRS may consider this a wash sale. The "substantially identical" standard is not always clear-cut with options, but the general rule is to avoid buying calls or exercising options on the same security you just sold at a loss within the 30-day window.

Closing and Reopening Similar Options Positions

If you close an iron condor at a loss and immediately open a very similar iron condor on the same underlying with the same expiration, there is a reasonable argument the IRS could view this as a wash sale. The exact treatment depends on strike prices, expiration dates, and the structure of the trade.

The Safest Approach

The cleanest way to harvest a loss while maintaining market exposure is to:

1. Close the losing position on one underlying or ETF
2. Open a similar (not identical) position on a different underlying

For example: close a losing position on SPY, then open a new position on QQQ or IWM. These track different indices and would not be considered substantially identical, though you should confirm with your tax advisor.

The IRS guidance on wash sales is available at irs.gov — search for Publication 550, which covers investment income and expenses including wash sale rules.

Practical Steps Before December 31

Step 1: Review Your Open Positions

List every options position currently open. For each, note:

• Current gain or loss relative to entry
• Days to expiration
• Whether closing it serves a tax purpose

Step 2: Identify Loss Candidates

Focus on positions with losses that would offset meaningful gains from earlier in the year. Small losses that cost more in commission and slippage to close than they save in taxes may not be worth harvesting.

Step 3: Check the Calendar

You need the closing trade to settle before December 31. For options, trades settle the next business day (T+1). If you want a December 31 realized loss, you need to place the closing trade by December 30.

Step 4: Be Careful About What You Reopen

After closing for a loss, wait more than 30 days before reopening a substantially identical position, or open a different but similar position immediately.

Iron Condor Considerations

Iron condors involve four legs. Closing an iron condor at a loss means closing all four legs — or just the legs that are at a loss — which affects the wash sale analysis differently.

The safer approach for iron condor traders who want to harvest end-of-year losses is to close the entire position and, if you want to maintain market exposure, open a new iron condor on a different underlying with a different expiration structure.

For investors using Tradematic, the automated platform handles position entries and exits systematically. Tax-loss decisions at year-end are still the investor's responsibility — Tradematic does not make tax decisions on your behalf. Review your account's realized P&L before December 31 and consult your tax advisor about whether harvesting makes sense.

For more context on how options are treated for tax purposes, the article on iron condors and taxes covers the broader framework. And for year-end position management beyond taxes, see year-end options position management.

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Frequently Asked Questions

Does the wash sale rule apply to options? Yes. Options on the same underlying as a security sold at a loss can trigger wash sale treatment. The IRS considers options on the same stock or ETF to potentially be "substantially identical." Consult a tax advisor for your specific situation.

What is the deadline to harvest losses in 2025? Your closing trade needs to settle before December 31. Options settle T+1. Place the trade by December 30 to have it settle on December 31, or earlier to be safe.

Can I harvest losses on iron condors? Yes. You can close an iron condor at a loss before year-end to realize that loss for tax purposes. Be careful about reopening the same structure on the same underlying within 30 days.

Does tax-loss harvesting actually save money? It does if you have gains to offset and if the tax savings exceed any costs of closing and reopening positions. For large accounts with significant gains, the savings can be substantial. For small accounts with small gains, the math may not favor it.

Should I close a position just for tax purposes? Only if the tax savings justify it and you are not forced to make a worse investment decision to achieve them. Never close a good position purely for tax reasons unless the trade-off clearly favors it.

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Trading involves risk and losses can occur. Past performance does not guarantee future results. Options trading is not suitable for all investors. Only allocate capital you are comfortable risking.