Home › Guides › Options: covered calls

Buy-write explained: buying the shares and selling the call in one order

A buy-write is a covered call opened in one step: you buy 100 shares and sell one call together, for a single net price. It saves you from the stock moving between two orders. It doesn't change the risk, which is still the shares.

Options guide · 8-minute read · Updated 2026-10-26

How a buy-write works

Normally, a Covered call takes two orders. First you buy 100 shares. Then you sell a call on them.

A Buy-write does both at once. On most broker order screens, you pick a "Buy-write" or "Covered call" strategy, choose the stock and the call, and enter one price: the share price minus the premium. That's the net debit, the cash that leaves your account per share.

The order only fills if both parts fill together at your net price or better. You never end up with the shares and no call, or a call and no shares.

A worked example (an illustration, not a trade idea)

A made-up stock, XYZ, trades at $50. The 35-day $52 call is bid $1.50.

You enter a buy-write: buy 100 XYZ, sell 1 XYZ $52 call, net debit $48.50, limit, day order. It fills.

• You paid $5,000 for the shares.
• You collected $150 for the call.
• Your net cost is $4,850. Your break-even at expiry is $48.50.

Then XYZ has a bad month.

The month XYZ fell to $42

Here is that $42 row, worked out.

Week one, XYZ dips to $48. The call drops to $0.80. Your position: shares −$200, call +$70, total −$130.

Week three, a weak report from a company in the same industry. XYZ slides to $44. The call is worth $0.10. Total: shares −$600, call +$140, −$460.

Expiry: XYZ closes at $42. The call expires worthless. You keep the $150. The shares are worth $4,200. Against your $4,850 net cost, you are down −$650.

A plain buyer at $50 would be down $800. The buy-write was $150 better. That $150 is the whole benefit. It didn't change the direction, and it can't.

Now month two. A $52 call with XYZ at $42 pays only a few cents. To collect a real premium you'd have to sell near $42 or $44, below your $48.50 cost. If XYZ then bounced, you'd be called away at a loss. That's the strike-below-cost trap.

Why use a buy-write at all

The benefit is about fills, not about risk.

• No gap between orders. If you buy shares first, the stock can move before you sell the call. The premium you then get changes, up or down, and you don't control which. Doing it in two steps is called legging in. See Legging in.
• One price to think about. You decide the net cost you'd pay, and either get it or don't.
• It forces the question. Entering a net debit makes you see your real break-even before you own anything.

When to use it, and when not to

Use a buy-write when:

• You'd want to own the stock even without the call.
• You'd be glad to sell at the strike, above your net cost.
• There's no earnings report before the expiry date.
• The 100-share cost fits your account. Size it as stock.

Skip it when:

• You're buying the stock only for the premium. If you wouldn't own XYZ without the call, the call doesn't make it a good stock.
• The stock is falling fast. The premium looks big because the market expects more movement. See covered calls on a stock in free fall.
• Earnings land inside the trade. A gap down goes straight past your break-even.

How it compares with selling a cash-secured put

A buy-write at the money and a cash-secured put at the same strike have a similar shape. Both make a small fixed amount if the stock stays flat or rises, and both lose if it falls. The put starts you in cash; the buy-write starts you in shares.

In the wheel strategy, the put comes first. A buy-write is a way to start on the call side instead, when you'd rather own the shares now. See the cash-secured put guide for the other side.

Tips for the order itself

• Use a limit on the net price. Start near the share price minus the middle of the call's bid and ask.
• Check the preview. It should show a buy of 100 shares, a sell to open of 1 call, and a single net debit.
• Be patient on quiet stocks. Combo orders on small names can take time to fill.
• Taxes: in many accounts, the shares and the call are recorded as two trades. Check with a tax professional or your broker. In Canada, covered calls and buy-writes are widely allowed in a TFSA or RRSP, but permissions differ by broker.

Questions