How Leverage and Margin Actually Work on a CFD Account
Understanding how leverage and margin work on a CFD account is the difference between trading with your eyes open and gambling with extra steps. Get the maths wrong and a small market move can wipe out far more of your account than you expected — so let's walk through exactly what's happening behind the scenes.
What Leverage And Margin Actually Mean
Leverage and margin are two sides of the same coin, but they're not the same thing.
- Margin is the cash your broker sets aside from your account balance to open and hold a position. It's a deposit, not a fee.
- Leverage is the ratio that describes how much market exposure you control for that margin — e.g. 30:1 means £1,000 of margin can control £30,000 of exposure.
- Notional value is the full size of the position you control, regardless of how much margin you put up.
The formula is simple:
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Margin required = Notional value ÷ Leverage
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So if you open a position worth £30,000 notional at 30:1 leverage, you need £1,000 in margin. If your broker only offers 10:1 on that instrument, the same trade needs £3,000 in margin. Leverage doesn't change your profit or loss in currency terms — it changes how much capital you tie up to take the same trade, and therefore how much room you have before things go wrong.
It's worth repeating the core point because it trips people up constantly: leverage amplifies both gains and losses relative to your account size, not relative to the market's move. The market doesn't know or care what leverage you're using.
How Margin Requirements Are Actually Set
Margin isn't a flat number across every instrument. Brokers and regulators set margin rates based on the volatility and liquidity of what you're trading. As a rough shape (not fixed figures — always check live rates):
- Major FX pairs typically carry the lowest margin requirements because they're liquid and less erratic.
- Minor and exotic FX pairs usually require more margin due to wider spreads and bigger swings.
- Indices sit somewhere in the middle, varying by index.
- Shares and commodities often need higher margin, especially around earnings or news events.
- Crypto CFDs, where offered, typically carry the highest margin requirements of all.
Under FCA rules, retail clients in the UK get maximum leverage caps that vary by asset class — tighter on volatile instruments, more generous on major currency pairs. Professional clients can apply for higher leverage, but that comes with reduced protections, so it's not a decision to make lightly.
Margin requirements also aren't static — brokers can and do raise them temporarily around high-impact news events, elections, or central bank announcements, when volatility spikes. Always check your specific instrument's current rate rather than assuming it'll match what you traded last month.
Initial Margin vs Maintenance Margin vs Margin Call
These three terms get used loosely, but they mean different things at different stages of a trade:
| Term | What it means | |---|---| | Initial margin | The deposit required to open the position in the first place | | Maintenance margin | The minimum equity you must keep in your account while the position is open | | Margin call | A warning that your equity has dropped close to the maintenance level — add funds or reduce exposure | | Stop-out level | The point at which the broker automatically closes positions to stop your balance going further negative |
Your equity (balance plus/minus floating profit or loss) is what's checked against these levels in real time, not just your static balance. This is why a position can look fine on paper and then suddenly trigger a margin call the moment the market ticks against you — floating losses eat into equity instantly.
Different brokers set stop-out levels at different percentages of margin used, and platforms display this differently too — MetaTrader shows a margin level percentage, while some proprietary platforms present it differently again. Know your platform's specific warning signs before you need them.
A Worked Example Of Leverage And Margin In Practice
Say you want to trade a CFD position worth £20,000 notional.
- At 50:1 leverage, required margin = £400
- At 20:1 leverage, required margin = £1,000
- At 10:1 leverage, required margin = £2,000
Now imagine the market moves 2% against you in each case. The loss in cash terms is identical — roughly £400 — because the position size hasn't changed. But look at what that does to each account:
- With £400 margin used and only, say, £500 in the account, a £400 loss is close to wiping you out.
- With £2,000 margin used against a well-funded account, the same £400 loss is a manageable dent.
Higher leverage doesn't create bigger losses on its own — it encourages bigger position sizes relative to account size, which is where the real danger lives. The leverage ratio itself is just a capital-efficiency setting; how you use that freed-up capital is what matters.
Building A Margin Safety Buffer
A practical workflow for keeping margin risk under control:
1. Decide your position size from your risk tolerance first, not from how much margin is available. Leverage tells you what you *can* do, not what you *should* do. 2. Check your margin level regularly, especially when holding multiple open positions — margin used adds up across the account, not per trade. 3. Keep spare equity as a buffer, rather than running accounts near full margin utilisation. 4. Use stop losses so a losing trade closes before it threatens your maintenance margin. 5. Recalculate after big wins or losses — your available margin changes as your equity changes.
Spreading risk across too many leveraged positions at once is one of the fastest routes to an unexpected margin call, even if each individual trade seems small.
Comparing Leverage And Margin Rules Across Brokers
Leverage caps, margin tiers, and stop-out levels genuinely differ between brokers and even between account types at the same broker. In Pepperstone's platform settings, for example, leverage tiers are applied per instrument and client classification. IG likewise sets its own margin tiers across its platform and MetaTrader offering, and these can differ from Pepperstone's for the same instrument.
Rather than assume, always check:
- The specific leverage cap for the instrument you're trading
- Whether you're classed as retail or professional
- The broker's stop-out percentage
- Whether margin requirements increase around news events
For side-by-side current figures, run your instrument and account type through PipTax's [cost audit tool](/audit.html) and cross-reference with our [broker comparison pages](/brokers/index.html) — this gives you live numbers rather than guesswork.
Conclusion: Respecting Leverage And Margin Keeps You In The Game
Leverage and margin on a CFD account aren't inherently dangerous — they're tools that determine how efficiently your capital is used, and trading CFDs always carries real risk of loss regardless of leverage level. The traders who last are the ones who size positions to their account and risk tolerance, not to the maximum leverage on offer. Before your next trade, check the live margin requirement, work out your buffer, and if you want a broader grounding in the mechanics, our [trading school](/school/index.html) covers this alongside spreads, swaps, and execution costs in more depth.
Key takeaways
- Margin is the cash set aside to open a position; leverage is the ratio describing how much exposure that margin controls
- Leverage doesn't change profit or loss in cash terms, but it changes how much capital you tie up and how close you sit to a margin call
- Margin requirements vary by instrument volatility and can rise temporarily around major news events
- Equity, not just balance, is what's checked against maintenance margin and stop-out levels in real time
- Size positions from your risk tolerance first, not from the maximum leverage on offer
- Leverage caps and stop-out levels differ by broker and account type, so always check live figures before trading
Frequently asked questions
- What is the difference between leverage and margin on a CFD account?
- Margin is the actual cash your broker holds to open and maintain a position. Leverage is the ratio that describes how much market exposure that margin controls, e.g. 30:1 means £1,000 margin controls £30,000 of exposure.
- How is margin calculated on a CFD trade?
- Margin required equals the notional value of the position divided by the leverage ratio available for that instrument. Higher leverage means less margin tied up for the same position size.
- What happens when you get a margin call on a CFD account?
- A margin call means your account equity has dropped close to the maintenance margin level. You'll usually need to add funds or close/reduce positions, otherwise the broker may start closing trades automatically at the stop-out level.
- Does higher leverage mean higher risk?
- Leverage itself doesn't change the cash profit or loss from a given price move. The risk comes from using leverage to take larger position sizes relative to your account balance, which shrinks your buffer against adverse moves.
- Are leverage limits the same at every broker?
- No. Leverage caps, margin tiers and stop-out levels vary by broker, instrument, and whether you're classed as a retail or professional client. Always check current figures on the broker's own platform or via a cost comparison tool rather than assuming.
- Can margin requirements change after I've opened a trade?
- Yes. Brokers can raise margin requirements around high-impact news events, low-liquidity periods, or heightened volatility, which can increase the equity you need to maintain an existing position.