A CFD moves one-for-one with the underlying price: if the price rises by $1, a long position gains $1 per unit, and losses work the same way. An option is different. Buying an option gives the right, but not the obligation, to buy or sell at a set price before a set date. The buyer pays a premium up front, can lose no more than that premium, and needs the price to move far enough, fast enough, to profit. Selling options reverses that trade-off.
Key takeaways
- CFD profit and loss is linear; an option’s payoff is curved and depends on price, time and volatility.
- The most an option buyer can lose is the premium paid; a leveraged CFD position can lose more than its margin.
- Options lose value as expiry approaches, all else equal. This is called time decay.
- Option sellers collect the premium but can face large or, for uncovered calls, theoretically unlimited losses.
- CFDs usually have no expiry but charge daily financing; options always expire.
| CFD | Linear payoff · margin · no expiry (cash CFDs) · daily financing |
|---|---|
| Bought option | Capped loss (premium) · curved payoff · time decay · expiry |
| Sold option | Premium received · large potential losses · margin required |
| Main extra variable in options | Implied volatility |
CFDs vs options side by side
| Feature | CFD | Bought option | Sold option |
|---|---|---|---|
| What you pay or post | Margin | Premium | Margin; you receive the premium |
| Maximum loss | Can exceed margin; limited by the account balance with negative balance protection | The premium | Large; uncovered calls theoretically unlimited |
| Payoff shape | Linear | Curved | Curved |
| Effect of time | Financing cost | Loses value (time decay) | Gains from time decay |
| Effect of volatility | Indirect | Higher volatility raises value | Higher volatility raises losses |
| Expiry | None for cash CFDs | Yes | Yes |
| Choice to make | Size and direction | Strike, expiry, call or put | Strike, expiry, call or put |
A worked example (illustrative)
| Scenario | Long CFD, 10 shares | Buy 1 call option, strike $105, premium $3 per share, 100 shares |
|---|---|---|
| Up-front | Margin, e.g. $200 at 1:5 | Premium $300 |
| Share ends at $120 | +$200 | (120 − 105 − 3) × 100 = +$1,200 |
| Share ends at $106 | +$60 | (106 − 105 − 3) × 100 = −$200 |
| Share ends at $100 | $0, minus financing | −$300 (whole premium) |
| Share ends at $80 | −$200 | −$300 (loss capped) |
The CFD pays off from the first dollar in the right direction. The option needs the price to pass the strike plus the premium ($108 here) by expiry to make money, but its loss is capped. Option sizes differ too: a standard US equity option covers 100 shares.
Time decay and volatility
Part of an option’s price is time value: the chance that the price moves favourably before expiry. That value shrinks every day and falls fastest in the final weeks. The other key input is implied volatility, the market’s estimate of how much the price will move. Before events such as results, implied volatility rises, and it often falls sharply afterwards, which can make a bought option lose value even when the share moves the right way. The implied move before results is covered in stock CFDs and earnings season.
When each is used
| Aim | Common choice | Why |
|---|---|---|
| Short-term directional trade | CFD | Simple, linear, no time decay |
| Directional view with a fixed maximum loss | Bought option | Loss limited to the premium |
| Protect a holding against a fall | Bought put option, or a short CFD | Put caps losses; a short CFD offsets them one-for-one |
| Earn income from a flat market | Sold options | Collects premium, with large tail risk |
| Trade many markets from one account | CFD | Flexible sizes across asset classes |
With a CFD the equivalent of “limiting the loss” is a stop-loss, which is not guaranteed in a gap; see does a stop-loss always protect you.
What it costs to trade CFDs and options as a CFD
This section covers the CFD side. See what a CFD is.
| Cost | When it applies | Note for CFDs and options |
|---|---|---|
| Spread | Every CFD trade | Options also have spreads, often wider in percentage terms |
| Overnight financing | Cash CFDs held overnight | Options have no financing, but lose time value |
| Premium | Options only | Paid by the buyer, received by the seller |
| Slippage | Fast markets | Applies to both |
Key risks
Leverage in CFDs. Losses can exceed the margin posted. See how leverage increases trading risk.
Time decay in options. A correct view that arrives too late can still lose money.
Selling options. Premium income can be wiped out by a single large move.
Complexity. Options add strike, expiry and volatility decisions to direction and size.
Risk warning. Trading CFDs carries a high level of risk since leverage can work both to your advantage and disadvantage. As a result, the products offered on this website may not be suitable for all investors because of the risk of losing all of your invested capital. You should never invest money that you cannot afford to lose, and never trade with borrowed money.
Frequently asked questions
Can you lose more than you invest with options?
An option buyer can lose only the premium paid. An option seller can lose much more than the premium received, and selling uncovered call options has theoretically unlimited risk.
What is time decay in options?
Time decay is the loss of an option’s time value as expiry approaches. All else equal, an option is worth a little less each day, and the decline speeds up in the final weeks before expiry.
Are options better than CFDs?
Neither is better in general. Bought options cap the maximum loss but require the price to move far enough before expiry. CFDs are simpler and pay off from the first move, but losses are not capped by the product itself and positions incur financing.
Why did my option lose value when the share went up?
If implied volatility fell or time passed faster than the share rose, the option’s value can fall even with a favourable move. This often happens after results, when implied volatility drops sharply.
Related reading
Write your CFD risk limits down
A CFD has no premium to fix the worst case, so settle your risk per trade, total open risk and daily loss limit before opening a position. How to build a trading risk management plan walks through each limit with a filled-in example for a $5,000 account.
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