How Leverage and Margin Actually Work on a CFD Account
Understanding leverage and margin on a CFD account is the difference between sizing a trade sensibly and blowing an account on a move you thought was small. Both terms get thrown around loosely, but they have precise mechanical meanings that every CFD trader needs to know before placing a single order.
What Leverage Actually Means
Leverage is the ratio between the size of the position you control and the deposit you're required to put down for it. If a broker offers 30:1 leverage on a currency pair, you can control £30,000 of exposure for £1,000 of margin.
Key points to hold onto:
- Leverage doesn't create extra money — it changes how much of your own capital is tied up per trade.
- It scales both profit and loss in pound terms, equally, in the same direction as the underlying price move.
- Maximum leverage varies by instrument. Major FX pairs typically carry higher leverage caps than indices, and indices usually carry higher caps than single shares or crypto CFDs.
- In the UK, retail leverage limits are set by FCA rules and are lower than what's sometimes advertised to professional or non-UK clients — always check which category your account falls under.
Leverage is a ceiling, not a target. A broker allowing 30:1 doesn't mean you should trade at 30:1 on every position — it just means the door is open that wide if you choose to walk through it.
Margin: The Deposit, Not the Cost
Margin is the portion of your account equity your broker sets aside as security while a leveraged position is open. It is not a fee, a spread, or money you've spent — it's collateral that gets released back to your free balance the moment you close the trade.
There are two figures worth knowing:
- Required margin — the amount locked up for a specific open position, usually shown as a percentage of the full notional value (e.g. a 3.33% margin requirement roughly equates to 30:1 leverage).
- Free margin — your equity minus all required margin across open positions. This is what's actually available to absorb further losses or open new trades.
The relationship is simple: leverage = 1 ÷ margin requirement. A 5% margin requirement means 20:1 leverage; a 1% requirement means 100:1. Brokers display one or the other depending on the platform, so it helps to be able to convert between them mentally.
Worked Example: From Notional Value to Margin Used
Say you want to trade a CFD position worth £20,000 notional value, and the margin requirement quoted by the broker is 5%.
| Item | Value | |---|---| | Notional position value | £20,000 | | Margin requirement | 5% | | Margin required | £1,000 | | Effective leverage | 20:1 |
Put down £1,000, and the broker "reserves" it against a £20,000 position. If the instrument moves 1% in your favour, that's £200 of profit on a £1,000 stake — a 20% return on margin. Move 1% against you, and it's a 20% loss on margin. The leverage cuts identically both ways; that's the entire point to internalise.
Margin requirements differ by broker and product tier, so run any real trade through PipTax's cost tool at [/audit.html](/audit.html) rather than assuming a flat number applies everywhere.
Margin Calls and Stop Outs: How Brokers Protect Themselves
When losses eat into your free margin, brokers step in before the account goes negative (on most standard retail terms). Two thresholds usually apply, expressed as a margin level — equity divided by used margin, as a percentage:
1. Margin call — a warning trigger, commonly around 100% margin level, telling you free margin is thin. No positions are closed yet, but it's a signal to act. 2. Stop out — an automatic close-out trigger, commonly somewhere between 20% and 50% margin level depending on the broker, where the platform starts closing positions (usually the largest loser first) to stop the account going further underwater.
Exact percentages differ by broker and jurisdiction, so check the specific terms for your account — for example, in Pepperstone's or IG's platform documentation — rather than assuming a standard figure. What matters practically is this: a margin call is a warning shot, a stop out is the broker acting for you, not asking you.
Why Leverage Ratio Isn't the Same as Risk
This is the point most new CFD traders get backwards. The leverage your account *allows* is not the same as the leverage you're actually *using*.
- Two traders with £5,000 accounts, both on 30:1 max leverage, can have completely different risk profiles depending on position size chosen.
- Effective leverage — your total notional exposure divided by your account equity — is what actually determines your risk of ruin, not the maximum ratio printed on your account type.
- A trader using £500 of margin out of a £5,000 account (effective leverage of roughly 3:1, assuming a 33% margin requirement) is far safer than one piling in near their margin ceiling, even on identical account settings.
Position sizing — deciding how much of the account to commit per trade — is the actual risk control. Leverage and margin on a CFD account just set the mechanical boundaries within which that sizing decision happens.
A Practical Pre-Trade Checklist
Before opening any leveraged CFD position:
- Check the margin requirement for that specific instrument on your broker's current terms — it varies between FX majors, minors, indices and shares.
- Calculate effective leverage: notional position value ÷ account equity, not the account's maximum ratio.
- Know your margin level thresholds for call and stop out on that specific broker.
- Decide position size from risk first, then check it fits comfortably within available margin — not the other way round.
- Compare live broker terms side by side on the [PipTax broker pages](/brokers/index.html) before assuming any one figure applies to your account.
- Read the methodology behind how margin and cost comparisons are built at [/methodology.html](/methodology.html) so you're comparing like with like.
Conclusion: Treat Leverage as a Tool, Not a Target
Leverage and margin on a CFD account are simply the mechanics that let you control a larger position with a smaller deposit — they are neutral tools, not a strategy. The trader who survives long term is the one sizing positions from risk tolerance downward, checking margin requirements before entering, and understanding exactly where their broker's margin call and stop out sit. For structured lessons on position sizing and CFD mechanics, visit the [PipTax school](/school/index.html), and always confirm live margin figures on the cost tool before trading real capital.
Key takeaways
- Leverage lets you control a larger CFD position than your deposit, but it magnifies both gains and losses equally
- Margin is the deposit your broker locks up as security for the trade, not a fee or a cost
- Margin requirement is usually shown as a percentage; leverage is the inverse of that percentage
- A margin call happens when free margin falls too low; a stop out is the broker's automatic close-out to limit further loss
- Position size, not the leverage ratio your account offers, is what actually determines your real risk
- Use PipTax's cost tool and broker pages to check live margin rates before sizing any trade
Frequently asked questions
- Is higher leverage always more risky?
- Higher leverage lets you open a larger position for the same deposit, which increases the pound-per-pip value of that trade. The leverage ratio itself isn't the danger — the position size you choose relative to your account is. Two traders on 30:1 leverage can take very different risks depending on how big a position they open.
- What's the difference between margin and a fee?
- Margin isn't spent — it's set aside from your free equity as security while the trade is open. Once you close the position, that margin is released back to your free balance. Spreads, commissions and swaps are the actual costs of trading; margin is just collateral.
- What happens if my margin level drops too low?
- Most brokers issue a margin call warning at a set margin level (often around 100%), then a stop out that automatically closes positions — usually starting with the biggest loser — at a lower threshold (often 50% or less). Exact levels vary by broker, so check your provider's terms.
- Does leverage change from broker to broker?
- Yes. Maximum leverage and margin requirements vary by broker, instrument, account type and regulatory regime — for example, UK retail leverage caps differ from what's offered to professional or offshore clients. Compare current terms on the PipTax broker pages rather than assuming one figure applies everywhere.
- Can I trade CFDs without using leverage?
- Technically you can post more margin than required and treat a position as if it were unleveraged, but most CFD accounts are structured around margin trading by design. If you want limited or no leverage, check whether the broker or product allows manually reducing exposure, or consider whether CFDs suit your goals at all.