Over the ten years to October 2026 the S&P 500 returned 13.8% a year on price alone. An investor who missed just its 10 best days earned 6.6%. Eight of those ten days came within two weeks of one of the decade’s ten worst days, which is exactly when people who sell to cash are sitting on the sidelines. Add a capital gains bill on a low-basis position, and going to cash becomes one of the most expensive hedges available. If you are not sure what selling would cost you in tax, start with taxes on sold stock.
What is the difference between hedging and going to cash?
Going to cash removes the position; hedging keeps the position and changes its payoff. Both reduce risk, but they differ on what you give up, what it costs, and what you have to decide next.
| Go to cash | Hedge with options | |
|---|---|---|
| Downside | Removed | Floored at the put strike |
| Upside | Removed | Kept (put) or capped (collar) |
| Cost | Tax on gains, plus missed returns | Option premium, or capped upside |
| Income while waiting | T-bill yield (4.22%) | Dividends on the shares you keep |
| Next decision | When to buy back | When to roll or remove the hedge |
Why is going to cash so hard to get right?
Going to cash is hard because you have to be right twice: when to sell and when to buy back. The best days usually arrive in the middle of a selloff, when cash feels safest.
The decade to 2026 shows it clearly. The S&P 500’s best day was April 9, 2025 (+9.5%), three trading days after the 4.8% and 6.0% drops of April 3 and 4. Seven of the ten best days came in March and April 2020, between and after the worst days of the Covid crash. An investor who sold in late February 2020 and waited for calm missed almost all of them. These are the same fat tails that make crashes worse than models predict, and they work in both directions.
Selling after a 15% drop locks in the loss and leaves you waiting for a “clear signal” to buy back. The signal usually comes after the rebound. A hedge bought before the drop, or a put spread bought into it, keeps you invested for the recovery.
How much does selling to cash really cost in taxes?
For a long-held, low-basis position, the tax on selling can be the largest cost of de-risking by far. At the top federal rate, long-term gains are taxed at 20% plus the 3.8% net investment income tax, before state tax.
Take a $2 million position in one stock with a $300,000 cost basis, the kind of holding many tech employees build from equity grants. Selling it all creates a $1.7 million gain and about $404,600 of federal tax this year. Selling half cuts that to about $202,300 but leaves half the risk. A one-year put 10% below today’s price costs about $164,000 in our estimate, keeps all the upside and triggers no sale. A 90/70 put spread costs about $89,000. A collar with a put at 90% and a call at about 119% costs nothing up front.
The comparison isn’t perfectly like for like. Tax on a sale is a cost you would eventually pay if you ever sell (unless the shares are held until death, gifted or donated), while option premium is gone for good. But paying the tax now, at the top rate and in one year, is rarely the cheapest option. See tax-efficient investing for ways to spread gains across years.
What does an options overlay look like?
An options overlay is a set of options placed on top of the holdings you keep, to reshape their risk without selling them. For downside protection, three structures cover most needs.
- Protective put: buy a put 5%–15% below the current price. Full upside, a hard floor, the highest premium. Details in the protective put strategy.
- Put spread: buy that put and sell a lower one. Roughly half the cost, but protection stops at the lower strike.
- Collar: buy a put and sell a call above the market to pay for it. Little or no premium; gains above the call are given up. See the collar strategy for concentrated stock.
For a diversified portfolio, the same structures can be applied with S&P 500 index options rather than on each holding. Our tail risk hedging hub compares the costs.
How do you decide between hedging and selling?
Decide based on tax cost, conviction, time horizon and the cost of protection today. The matrix below compares five choices for a low-basis, concentrated position.
| Your situation | Usually better |
|---|---|
| Low basis, still believe in the company | Collar or put on the position; keep the shares |
| Low basis, conviction fading | Staged sales across tax years, hedged in between |
| Gain is small or in a tax-deferred account | Selling is cheap; cash or rebalance |
| Need the money within 1–2 years | Sell enough to cover it; hedge the rest |
| Volatility already high (VIX above 30) | Put spreads or collars; outright puts are expensive |
When is going to cash the right answer?
Cash is the right answer when you need the money soon, have lost conviction, or the tax cost is small. Hedging is a way to keep a position you want; it isn’t a reason to keep one you don’t.
If you need funds for a house, a tax bill or a business within two years, the money shouldn’t be in stocks at all, hedged or not. If the gain sits in a 401(k) or IRA, selling has no immediate tax cost, so a rebalance is simpler than an overlay. And with 3-month T-bills at 4.22%, cash is no longer dead money. What matters is that the decision is about your needs, not a forecast that the market is about to fall.
What tax rules apply to hedging a position?
Two rules matter most. First, a hedge that removes almost all risk and reward can be a constructive sale under Section 1259, taxed as if you had sold; very tight collars are the usual problem. Second, put and collar positions can fall under the straddle rules, which can suspend the holding period and defer losses. Both are manageable with a reasonable gap between strikes and planning with a tax adviser. The IRS treatment of options is summarized in Publication 550.
What should you check before de-risking?
- Calculate the tax on selling, federal and state, for the full position and for slices.
- Price a one-year protective put, a put spread and a zero-cost collar on the same position.
- Decide what you need: a floor, a smaller position, or cash on a date.
- Set a collar’s strikes with a real gap to avoid a constructive sale.
- If selling, stage it across tax years and hedge what you still hold.
- Write down when you would remove the hedge or buy back, before you act.
Frequently asked questions
Is it better to hedge or sell stocks before a crash?
It depends on taxes, conviction and timing. Selling removes risk completely but gives up upside, triggers capital gains tax and requires you to decide when to buy back. Hedging keeps the position and its upside and sets a floor, at a known premium. For low-basis or concentrated positions, hedging is usually cheaper.
Should I move my portfolio to cash?
Moving everything to cash is a bet that you can time both the exit and the re-entry. Over the 10 years to October 2026, missing the S&P 500’s 10 best days cut its annual price return from 13.8% to 6.6%, and most of those days came within two weeks of the worst days. Partial de-risking or hedging avoids the all-or-nothing decision.
How much tax would I pay selling stock to go to cash?
Long-term gains are taxed federally at 0%, 15% or 20%, plus a 3.8% net investment income tax for higher earners. At the top rate, selling a $2 million position with a $300,000 cost basis creates about $404,600 of federal tax, before state tax.
What is an options overlay?
An options overlay is a set of options positions placed on top of an existing portfolio to change its risk without selling the holdings. Common overlays are protective puts, put spreads and collars for downside protection, and covered calls for income.
Is a collar the same as selling the stock?
No. A collar caps your gains and limits your losses, but you keep the shares, the dividends and the voting rights, and no sale occurs. If the strikes are set too close together, the IRS can treat the collar as a constructive sale under Section 1259, so keep a meaningful gap between the put and call strikes.
Does cash beat hedging when T-bills pay over 4%?
Cash now earns 4.22% on 3-month T-bills, which offsets part of the opportunity cost of being out of the market. But it doesn’t offset the tax on selling a large gain, and over the last decade the S&P 500 returned 13.8% a year on price alone. Hedging lets you keep that exposure while capping the downside.
Key takeaways
- Going to cash removes downside and upside together, and in a taxable account the tax bill is due immediately.
- Missing the 10 best S&P 500 days of the last decade cut the annual price return from 13.8% to 6.6%; 8 of those days came within two weeks of a worst day.
- For a $2 million position with a $300,000 basis, selling costs about $404,600 in federal tax; a one-year 10% out-of-the-money put costs about $164,000 in our estimate.
- A collar can cost nothing up front by giving up gains above the call strike, but too tight a collar can be a constructive sale.
- Partial sales, staged over tax years, combined with hedges on the rest, often beat an all-or-nothing choice.
- Cash is the right answer when you need the money soon or have lost conviction in the position.
Sources and method
- S&P 500 via FRED (SP500) — daily closes, October 2016 to October 2026
- 3-Month Treasury Constant Maturity Rate via FRED (DGS3MO) — 4.22% on October 5, 2026
- IRS, Topic No. 409 Capital Gains and Losses — long-term capital gains rates
- IRS, Net Investment Income Tax — 3.8% tax on investment income above thresholds
- 26 U.S. Code § 1259, Constructive sales — when a hedge is treated as a sale
Best-days figures use FRED’s S&P 500 daily closes from October 7, 2016 to October 6, 2026 (price only, dividends excluded); missed days earn zero. The tax example assumes a long-term gain taxed at the top federal rate of 20% plus 3.8% NIIT and excludes state tax. Option costs are Black–Scholes estimates for a one-year term, a 4.22% rate, no dividends and assumed implied volatilities (38% for the 90% put, 45% for the 70% put, 33% for the call); the collar call strike is solved for zero net premium. Illustrative, not tax advice.