What Is a Buy-Write? Opening a Covered Call in One Order
Reviewed by Leon Moyer - Published October 9, 2026 - Last reviewed October 9, 2026
In this lesson
Explain what a buy-write order is, calculate its net debit, break-even, maximum profit and maximum loss, and compare its outcomes with buying the shares alone.
A buy-write is buying 100 shares of a stock and selling one call option on them at the same time, usually as a single order with one net price. The result is a covered call opened in one step, and the net debit, the share price minus the premium, is both what you pay and your break-even at expiration.
Owning shares first and selling a call later is the same position once both are in place. The difference is timing: a buy-write opens the stock and the call together, so neither half can fill without the other. This lesson uses the trade from What Is a Covered Call?, opened as a buy-write. It is hypothetical and is not a recommendation to trade.
How does a buy-write order work?
You enter one order with two legs, and a limit on the net price rather than on each leg:
- Buy 100 XYZ at $48.00.
- Sell 1 XYZ 52 call, 30 days out, at $0.80.
- Net debit limit: $47.20 per share.
A buy-write is one order with two legs
Buy 100 shares
XYZ at $48.00: pay $4,800
Sell 1 call
XYZ 52 call, 30 days, at $0.80: get $80
Net debit $47.20
$4,720 paid; break-even $47.20
The order fills only if the stock price minus the call premium comes to $47.20 or less. If XYZ dips to $47.90 and the 52 call to about $0.78 before your order fills, the net is $47.12, under your limit, so the order can fill. If XYZ rises to $48.40 and the call to about $0.91, the net is $47.49 and the order waits. That is the point of a net order: you care about the combined price, not each leg.
Entered as two separate orders, the halves can fill at different times or not at all. You might buy the shares and then watch the call's bid fall before you sell it, or sell the call and find the shares have moved. That is called legging into the trade. The single order removes that risk.
Whether your broker offers a combined buy-write or covered call order with a net debit limit, what it calls that order, and which account types can use it all differ by broker. Check your broker's order ticket before you rely on it.
What are the max profit, max loss and break-even of a buy-write?
They are the covered call's, measured from the net debit:
- Break-even at expiration is the net debit: $48.00 - $0.80 = $47.20.
- Maximum profit is the strike minus the net debit, times 100: ($52 - $47.20) x 100 = $480, at any price at or above $52.
- Maximum loss is the net debit times 100, if the stock goes to zero: $4,720.
The Options Industry Council's guide to the covered call (buy-write) says the analysis is the same as for a covered call on shares already owned, and gives the same break-even: starting stock price minus premium received.
A buy-write carries the full risk of owning the stock. You pay $4,720 up front, and if XYZ goes to zero you lose all of it. The premium lowers the break-even by $0.80 a share; it does not protect the shares.
Buy-write versus buying the shares: which does better?
Compare the buy-write with simply buying 100 XYZ at $48, at the call's expiration 30 days later:
Buy-write versus buying the shares, 30 days later
XYZ falls to $42: loss
XYZ stays at $48: profit
XYZ rises to $58: profit
The pattern is simple. Below the strike, the buy-write is ahead by exactly the premium, $80. Between the strike and $52.80 its lead shrinks: at $52.40 it is ahead by only $40. Above the strike, the shares alone keep rising and the buy-write does not, and the two cross where the stock reaches the strike plus the premium: $52 + $0.80 = $52.80. Above that price, the plain shares win by more for every dollar the stock rises.
So a buy-write is a bet that XYZ will not finish far above $52.80 in the next 30 days. If you think a big rally is likely, buy the shares without the call. If you think a fall is likely, neither position suits you.
Worked example
Opening and planning a buy-write on XYZ
You want to own XYZ and would be happy to sell at $52 within a month. You send one buy-write order: buy 100 XYZ, sell 1 XYZ 52 call 30 days out, net debit limit $47.20. It fills at $47.20.
- Paid: $47.20 x 100 = $4,720, plus any commissions and fees.
- If XYZ stays at or below $52: you keep the shares and the $80, and decide whether to sell another call. How to Choose a Covered Call Strike Price and Expiration covers that choice.
- If XYZ finishes above $52: your shares are called away at $52 and you make $480, as described in What Happens When a Covered Call Is Assigned?.
- If XYZ falls: every dollar below $47.20 costs you $100. Decide in advance the price at which you would sell the shares rather than keep writing calls on them.
Illustrative and hypothetical. The ticker and prices are invented for teaching, and the figures exclude commissions, fees, margin interest and taxes, which reduce real results. Past or hypothetical outcomes do not indicate future results.
When do traders use a buy-write?
Traders use a buy-write when they have decided they want to own a stock and decided the price at which they would sell it. The call turns the second decision into premium on day one. It suits a steady or slightly rising outlook, the same as any covered call.
Because the filled position is a covered call, expect to need your broker's approval for covered calls before you can place one. Approval levels and rules differ between brokers, so check yours.
Check your understanding
You place a buy-write: buy 100 shares at $25.00 and sell a 27 call for $0.55. What are the net debit, break-even and maximum profit?
Show answer
The net debit is $25.00 - $0.55 = $24.45 per share, $2,445 in total, which is also the break-even. The maximum profit is ($27 - $24.45) x 100 = $255, at any price at or above $27.
Why use one buy-write order instead of buying the shares and then selling the call?
Show answer
A single order fills both legs together at one net price, so you avoid legging risk: one half filling while the price of the other moves, or does not fill at all.
In the XYZ comparison, above what price do the shares alone beat the buy-write?
Show answer
Above $52.80, the strike plus the premium. Below the strike the buy-write is ahead by the $80 premium; above $52.80 the shares keep rising and the buy-write's gain stays at $480.
Key takeaways
- A buy-write buys 100 shares and sells one call together, usually as a single order with a net debit limit.
- The net debit, share price minus premium, is the break-even; maximum profit is the strike minus the net debit.
- It beats the shares alone by the premium if the stock stays below the strike, by less between the strike and the strike plus the premium, and lags them above the strike plus the premium.
- It carries the full downside of the shares, so it suits a stock you want to own and would sell at the strike.
Common questions
What is the difference between a buy-write and a covered call?
They end up as the same position: 100 shares and one short call. A covered call usually means selling a call on shares you already own; a buy-write means buying the shares and selling the call at the same time, often as one order with a net price.
Is a buy-write a good strategy?
It suits someone who wants to own the stock, expects it to stay steady or rise a little, and is content to sell at the strike. It earns more than the shares alone if the stock goes nowhere, less if it rallies, and loses almost as much if it falls.
How do you calculate a buy-write's break-even?
The break-even at expiration is the net debit per share: the stock price paid minus the call premium received. Buying at $48 and selling a call for $0.80 gives a $47.20 break-even.
Can you place a buy-write as a limit order?
Many brokers accept a buy-write as one order with a net debit limit, so the shares and the call fill together at or better than that net price. Order types and availability differ by broker, so check how yours handles it.