To sell stock options, you need a brokerage account that has been specifically approved for options trading, and then you place one of two orders: Sell to Close to exit a contract you already own, or Sell to Open to write a new contract and collect a premium. If your options came from your employer, the path is different: you exercise the grant and sell the resulting shares through your company’s equity plan, usually in a single cashless transaction. Which route applies to you determines everything else, from the paperwork to the tax bill.
Get Your Account Approved First
A standard brokerage account cannot sell options. Your broker has to approve the account for options trading after reviewing your finances, experience, and objectives. FINRA Rule 2360 requires that due diligence, and the firm must give you the Options Clearing Corporation’s disclosure document, “Characteristics and Risks of Standardized Options,” before a Registered Options Principal or branch manager signs off.1FINRA. Regulatory Notice 21-15
Approval comes in tiers. The lowest tier at most firms only lets you sell covered calls (calls written against shares you already own) and protective puts. Higher tiers unlock spreads and, at the top, uncovered writing, which carries the largest capital requirement and the largest risk.2FINRA. FINRA Rule 2360 – Options If the level you’re granted is too low for what you want to do, you can request an upgrade after building a trading history or adding funds.
Sell to Close or Sell to Open
Once you’re approved, the single most important field on the order ticket is Action. It decides whether you’re getting out of a position or taking on a new obligation, and the two are not close to interchangeable.
Sell to Close liquidates an option you already own. You bought a call or a put, the contract sits in your account, and this order sells it back into the market. Proceeds land in your account, and the position is gone.
Sell to Open creates a brand-new short position. You are writing the contract. Cash arrives immediately as premium, but you have accepted an obligation: on a written call, potentially to deliver shares at the strike price; on a written put, potentially to buy them. That obligation stays live until the option expires worthless, you buy it back with a Buy to Close order, or you are assigned.
Pick the wrong one and you can end up short a contract you never meant to write, with theoretically unlimited loss potential on a naked call. Before you confirm anything, verify what you actually hold.
Placing the Order on the Option Chain
The option chain is a table of every available contract on the underlying stock, sorted by expiration date and strike price. Enter the ticker, pick the expiration (standard monthly options expire on the third Friday, and weekly and quarterly expirations are available on many names), and pick the strike, which is the price at which shares would change hands if the option is exercised.
Look at the bid-ask spread before you enter anything. When you sell, you’ll get something close to the bid, not the ask. On a thinly traded contract with a bid of $1.20 and an ask of $1.60, that gap is a real cost of roughly $0.40 per share. Heavily traded names have tighter spreads and cost less to trade in and out of.
For the order type, a market order fills immediately at the best available bid but doesn’t guarantee a price, and on a wide-spread option the fill can be noticeably worse than the quote you saw. A limit order sets the minimum price you’ll accept. On options, especially anything less than highly liquid, a limit order placed between the bid and the midpoint is usually the better call.
Regulatory fees on the preview screen are small. The SEC’s Section 31 fee is $20.60 per million dollars of proceeds for fiscal year 2026, which works out to a fraction of a cent on a retail trade.3U.S. Securities and Exchange Commission. Order Making Fiscal Year 2026 Annual Adjustments to Transaction Fee Rates The Options Regulatory Fee runs roughly $0.0017 to $0.0038 per contract side depending on the exchange.4GovInfo. Federal Register Vol. 90 No. 77 – Cboe Exchange ORF Proposal Your broker’s per-contract fee, where one applies, is the bigger line. Options settle on a T+1 basis, so the trade finalizes one business day after execution and the cash becomes available then.5U.S. Securities and Exchange Commission. New T+1 Settlement Cycle – What Investors Need To Know
What Happens When You Write an Option
If you used Sell to Open, you need to understand assignment. American-style options, which covers nearly all U.S. equity options, can be exercised by the buyer at any time. When that happens, the Options Clearing Corporation assigns the obligation to a short position using a randomized process, and your broker then picks from its own customer accounts.6Options Clearing Corporation. Standard Assignment Procedures
Early assignment is most likely on deep in-the-money contracts, and particularly on calls right before a stock goes ex-dividend, because the call holder can exercise to capture the dividend. Out-of-the-money contracts and contracts with significant time value are less exposed, because exercising early sacrifices that value.
Your broker requires collateral behind every short option. On a covered call, the shares themselves serve as collateral. On an uncovered position, you’ll need margin. A standard margin account requires at least $2,000 in equity, and the margin requirement on a naked option is substantially higher and moves with the underlying stock’s price.7U.S. Securities and Exchange Commission. Exhibit 5 – FINRA Rule 4210 Margin Requirements Fall below maintenance and the broker can issue a margin call or liquidate your positions without warning.
Selling Employee Stock Options
Employee stock options are a different animal. You can’t sell the contract itself on an exchange. You exercise the option (buy the shares at the grant price) and then sell the shares, typically in a single transaction handled by the company’s designated platform, such as E*TRADE, Fidelity, or Carta.
Two things have to be true before you can exercise. First, the options must be vested. Grant agreements commonly spread vesting over three or four years, sometimes with a one-year cliff before anything vests at all. Unvested options can’t be touched. Second, the trading window has to be open. Companies impose blackout periods around earnings and other material events, and trading during one can violate federal securities law. Your compliance office or equity plan portal shows the current window.
Most employees use a cashless exercise, also called an exercise-and-sell. The plan administrator or broker exercises the option and sells the shares at market simultaneously, using the sale proceeds to cover the exercise cost and any tax withholding, then depositing the net profit in your account. You never need to bring cash to the table.
Some paperwork sits behind this. Your plan administrator needs a current Form W-9 on file to report the transaction; without it, backup withholding of 24% comes off the top.8Internal Revenue Service. Form W-9 (Rev. March 2024) Plan administrators typically charge a transaction fee somewhere between $20 and $100 per exercise. And for incentive stock options, your employer files Form 3921 with the IRS after exercise, reporting the grant date, exercise date, exercise price, fair market value at exercise, and share count.9Internal Revenue Service. About Form 3921, Exercise of an Incentive Stock Option Under Section 422(b) Keep your copy; you’ll need it when you eventually sell the shares.
Taxes on the Sale
The tax treatment depends on what you sold and how long you held it.
Listed Options
Gains and losses on listed options are capital gains and losses. Held one year or less, the gain is short-term and taxed at your ordinary income rate. Held longer than a year, it qualifies for the lower long-term rate.10Internal Revenue Service. Topic No. 409, Capital Gains and Losses Most option positions are held for weeks or months, so short-term treatment is the norm.
The wash sale rule applies. If you sell an option at a loss and acquire a substantially identical option or the underlying stock within 30 days before or after the sale, the loss is disallowed and rolled into the cost basis of the replacement position. The statute expressly includes contracts and options within “stock or securities” for this purpose.11Office of the Law Revision Counsel. 26 US Code 1091 – Loss From Wash Sales of Stock or Securities
Incentive Stock Options
ISOs get favorable treatment if you meet two holding periods: at least two years after the grant date and at least one year after exercise.12Office of the Law Revision Counsel. 26 US Code 422 – Incentive Stock Options Meet both and the entire gain is a long-term capital gain. Miss either (a disqualifying disposition) and the spread between exercise price and fair market value at exercise is taxed as ordinary income, with any additional gain taxed as a capital gain.
There is a trap here. Exercising ISOs triggers an alternative minimum tax adjustment: the spread at exercise counts as income for AMT purposes even though you don’t owe regular income tax on it yet. On a large ISO exercise where the stock has appreciated significantly, this can produce a surprise AMT bill the following April. Talking to a tax professional before exercising a substantial ISO grant is one of the rare cases where the standard advice is worth taking literally.
Non-Qualified Stock Options
NSOs are simpler and more heavily taxed. The spread between the exercise price and the market price at exercise is ordinary income in the year of exercise, regardless of how long you then hold the shares. Your employer withholds income and payroll taxes on that amount and reports it on your W-2. Anything the shares gain or lose after exercise is a capital gain or loss, with the holding period starting on the exercise date.