How Leverage and Margin Actually Work on a CFD Account
Understanding how leverage and margin work on a CFD account is the single most important risk lesson for any new trader, because it determines how much capital you actually need, how fast losses can grow, and when a broker will start closing your trades for you. Get this wrong and even a correct market call can end in a margin call. Get it right and you can size positions sensibly and sleep at night.
What Leverage Actually Means
Leverage lets you control a position much larger than your deposited capital. It's expressed as a ratio, like 30:1 or 100:1, and it tells you how much exposure one unit of margin can support.
- 30:1 leverage means £1,000 of margin can control a £30,000 position.
- 100:1 leverage means the same £1,000 controls a £100,000 position.
Crucially, leverage doesn't change the pound value of a pip move — it changes how much of your own capital is tied up to hold that position. A 1% adverse move on a £30,000 position still costs £300, whether you used £1,000 or £10,000 of margin to open it. Leverage affects capital efficiency, not the underlying market risk of the trade itself.
In the UK, FCA rules cap retail leverage on major FX pairs at 30:1, with lower caps on indices, commodities, shares and crypto. Professional clients and some offshore accounts can access higher ratios, but with fewer regulatory protections. Always check the actual ratio applied to your account and instrument — it's rarely a single number across your whole portfolio.
Margin: The Deposit Behind the Trade
Margin is the slice of your account balance your broker sets aside as security while a leveraged position is open. It is not a fee or a cost — it's returned to your free balance when you close the trade (profit or loss is then applied separately).
There are two figures worth knowing:
- Used margin — the total currently locked up across all open positions.
- Free margin — what's left in your account available to open new trades or absorb floating losses.
The basic formula brokers use is:
`
Margin required = (Position size × Price) ÷ Leverage
`
So a 1 standard lot (100,000 units) EUR/USD position at 1.10, with 30:1 leverage, needs roughly £3,667 of margin. Your platform's dealing ticket will always show this before you confirm — use it, don't do the maths by hand under pressure.
Margin Level and the Margin Call
Margin level is the health check on your account:
`
Margin level = (Equity ÷ Used margin) × 100
`
Equity here means your balance plus or minus any floating profit or loss. As a trade moves against you, equity falls, used margin stays roughly constant, and margin level drops.
Typical thresholds (these vary by broker, so check your own account terms):
- 100% margin level — a common point where brokers issue a margin call warning.
- 50% or lower — a common stop-out level, where the broker begins closing positions automatically, starting with the largest loss, to protect both you and them from a negative balance.
A margin call is not a penalty — it's a mechanical safeguard. The way to avoid one is to never let a single trade or combination of trades use so much margin that a normal, expected price swing pushes your margin level toward the danger zone.
Why Leverage Doesn't Equal Risk Per Trade
This is the part many new traders get backwards. Leverage determines capital efficiency; your position size determines risk. Two traders can use identical 30:1 leverage and have wildly different risk profiles depending on how many lots they trade relative to account size.
Practical risk control checklist:
- Decide your risk per trade in cash terms first (e.g. 1% of account equity).
- Set your stop-loss distance based on the chart, not on how much margin you have free.
- Calculate position size from the stop distance and risk amount — not from the maximum leverage available.
- Treat "free margin" as a buffer, not as spare risk capital to be deployed.
Using the full extent of available leverage just because it's offered is one of the fastest routes to an avoidable loss.
Comparing Margin Requirements Across Brokers
Margin requirements and leverage tiers differ by broker, account type, and instrument — so comparing on paper only gets you so far. When reviewing brokers:
| Check | Why it matters | |---|---| | Leverage tier by instrument | Majors, minors, indices and shares often have different caps | | Margin call / stop-out % | Determines how much buffer you actually have | | Negative balance protection | Confirms you can't lose more than your deposit (standard for FCA retail accounts) | | Platform margin display | MetaTrader, cTrader and proprietary platforms show margin slightly differently |
Pepperstone and IG, for example, both publish their leverage tiers and margin policies for FCA-regulated retail accounts, but the exact figures depend on the instrument and your account classification — don't assume a headline leverage number applies everywhere on the platform. Always pull live figures from the broker's own margin schedule rather than relying on marketing pages.
Checking Your Own Numbers Before You Trade
Rather than estimating margin and leverage impact by hand, use the live dealing ticket on your platform and cross-check with independent tools. PipTax's own cost tool is built for exactly this: it lets you see how margin requirements and overall trading costs stack up before you commit capital, rather than discovering the real numbers mid-trade.
A simple pre-trade routine:
1. Check the instrument's current leverage tier on your broker's platform. 2. Calculate position size from your risk amount and stop-loss distance, not from available margin. 3. Confirm the margin requirement shown on the dealing ticket matches your expectation. 4. Note your resulting margin level with the new position added. 5. Run the trade through PipTax's [cost tool](/audit.html) to sanity-check the broader cost picture.
Conclusion
Once you understand how leverage and margin work on a CFD account, the mechanics stop being a mystery and start being a tool you control deliberately rather than one that controls you. Leverage sets how much capital a position ties up; margin is that capital itself; margin level is the warning light. Keep position sizing tied to your own risk tolerance — not the maximum leverage on offer — and verify every number against your broker's live margin schedule or a tool like PipTax's [cost tool](/audit.html) before you place the trade. For broader comparisons, the [brokers directory](/brokers/index.html) and [trading school](/school/index.html) are good next stops, and trading CFDs always carries the risk of losing more than your initial margin if you don't manage it carefully.
Key takeaways
- Leverage lets you control a larger position with a smaller deposit, but it magnifies both gains and losses equally — it doesn't change your risk per pip.
- Margin is the cash your broker sets aside from your account balance to open and hold a leveraged position; it's a deposit, not a fee.
- Margin level (equity ÷ used margin × 100) is the number that triggers margin calls and stop-outs — watch it, not just your P&L.
- Leverage ratios vary by instrument, broker and regulator (FCA retail caps are lower than offshore accounts), so always check the live figure before trading.
- Higher leverage reduces the capital tied up as margin but does not reduce the monetary risk if the trade goes against you.
- Use a position-size calculator and PipTax's cost tool to see real margin requirements and costs before committing capital.
Frequently asked questions
- What is the difference between leverage and margin?
- Leverage is the ratio that describes how much exposure you can control relative to your capital (e.g. 30:1). Margin is the actual amount of money, in your account currency, that your broker locks up to let you open that leveraged position. Leverage is the concept; margin is the cash consequence of it.
- How is margin calculated on a CFD trade?
- Margin is usually position size (in units or lots) multiplied by the current price, divided by the leverage ratio. For example, a position with notional value of £10,000 at 30:1 leverage needs £333.33 of margin. Brokers display this automatically before you confirm a trade, so always check the dealing ticket rather than calculating manually.
- What happens when my margin level gets too low?
- Most brokers issue a margin call warning when your margin level (equity divided by used margin) drops below a set percentage, often around 100%. If it falls further, to a stop-out level, the broker will start closing positions automatically to protect you and them from a negative balance. Thresholds differ by broker, so check the specific policy on your account.
- Does higher leverage mean higher risk?
- Higher leverage reduces the margin tied up per trade, which can tempt traders into opening larger positions than they should. But the risk per pip is set by your position size, not your leverage ratio. The real danger is using the freed-up capital to over-trade rather than the leverage figure itself.
- Why do leverage limits differ between brokers?
- FCA-regulated brokers serving UK retail clients must apply ESMA-derived leverage caps (for example 30:1 on major FX pairs), while professional accounts or offshore entities may offer higher ratios. Pepperstone and IG, both FCA-regulated, publish their retail leverage tiers on their platforms — always confirm current limits directly with the broker or via the cost tool.
- Can I change the leverage on my CFD account?
- Some brokers let eligible clients apply for professional status, which unlocks higher leverage but removes certain retail protections. Others set leverage per instrument automatically based on volatility and regulation. Check your broker's account settings or contact support to see what's available on your specific account type.