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Used Margin and Free Margin

Used Margin and Free Margin

"Learn the difference between used Margin and Free Margin. Discover how this affects your equity, margin level, and risk management, enabling better trading decisions."

Wikilix Team

Educational Content Team

August 19, 2025

12 min

Reading time

Beginner

Difficulty

#sparkofinsight#HowMarginWorksinForex#forex
Used Margin and Free Margin

Let's say you open your trading platform, ready to go. You see numbers on the screen - account balance, equity, margin level, and then you see Used Margin and Free Margin. For a lot of you (especially beginner traders), the used Margin and free margin numbers may appear as mystical codes. But the sad truth is that if you want improved trading knowledge, you have to understand.

The difference between these two things could be the difference between preserving your account and losing everything to a margin call. If you have ever wondered how to manage your risk and avoid surprises, this will be stated plainly in easy, simple English.

What is Margin in Trading?

Margin in trading is the money you commit as security to open and keep a margin position. Margin isn't a fee or cost you pay to the broker. A portion of your account funds is locked to support your trades.

Traders use margin to control positions that are many times larger than the balance available in their account, creating the potential for both greater profit and loss. For instance, if you wanted to open a position worth $10,000 and if your broker requires a margin of only 5%, you would only need $500 in your account to enter into the trade.

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What is Used Margin?

Used Margin means the part of your account balance that is currently "frozen" as collateral for your open trades. Every time you place a new trade, your broker will set aside a certain amount of margin for that trade. If you have multiple trades on at once, the total amount for your trades would be called Used Margin. Put, it represents how much of your money is locked up in active trades, and not available as Free Margin.

What is Free Margin?

Now we move on to Free Margin or essentially, "Usable Margin." Free Margin = Equity - Used Margin. Free Margin is what allows flexibility. Free Margin determines whether or not you can open more trades, and also protects your trading account against unwanted losses.

If your free Margin gets too close to zero, your account is in trouble! When free Margin approaches zero, brokers can execute a margin call or automatically close trades to protect their position. This situation becomes more critical when brokers take unauthorized positions.

Used Margin and Free Margin: A Direct Comparison

Feature

Used Margin

Free Margin

Definition

Funds locked to maintain open trades

Funds available for new trades or losses

Function

Acts as collateral for current trades

Acts as a safety net and growth fuel

Flexibility

Fixed until positions are closed

Dynamic, fluctuates with market moves

Risk Indicator

Shows exposure

Shows cushion for survival


How They Interrelate

Used Margin and free Margin are not opposing forces—they are two sides of the same coin. Used Margin indicates what you have committed to, and Free Margin indicates what free spots you still have open. Consider this scenario:

• Balance = $10,000

• You open a trade that requires $2,000 margin → Used Margin = $2,000

• Should your open trade presently be breakeven, you have also effectively taken on zero loss, therefore Equity = $10,000

• Free Margin = $10,000 – $2,000 = $8,000

Now, assume your open trade moves in the direction you don't want it to, and you are down $1,500 from your initial investment. This means your Equity is $8,500. Your Free Margin is now therefore: Free Margin = $8,500 – $2,000 = $6,500.

This emphasizes that free Margin is dynamic, continually changing with the market.

Why Free Margin is the Lifeline of Your Account

Free Margin is so essential; it isn't just a number, it is your survival metric! Without enough free Margin:

• You will be able to open new positions

• You can receive a margin call if your losses build up

• Your broker can stop you out by force-closing your open trades to prevent your Equity from going negative

In short, free Margin is your cushion. It indicates how much room you have to manoeuvre in the market.

Margin Level: The Unifying Principle

Most platforms have a margin level, expressed as a percentage calculated as: Margin Level = (Equity / Used Margin) x 100% This number will identify your risk profile:

• Over 200%: generally safe

• 100 - 200%: caution zone

• Under 100%: danger - risk margin-call or stop-out

By monitoring your margin level, you can react quickly and see how healthy your account is. It is a direct measure of the used Margin vs the free Margin.

Real Life Trading Examples

• Example A: Conservative Trader

Balance = $5,000. Opens a position with a margin requirement of $500

Used Margin = $500, Free Margin = $4,500

Looks in good shape with plenty of Margin available for new trades, or to absorb losses through to closure

• Example B: Aggressive Trader

Balance = $5,000. Opens a position with a margin requirement of $4,000

Used Margin = $4,000, Free Margin = $1,000

In this situation, a small move against the Trader would wipe out free Margin, leading to a margin call.

These examples demonstrate the need to understand both numbers for risk management purposes.

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Trader errors to avoid

1. Being blind to free Margin - A lot of newbies look at balance or Equity and do not consider that free Margin is your very lifeblood.

2. Over-leveraging - Utilizing too much Margin means free Margin is small, which is riskier

3. Equity vs. Balance confusion - Equity is holding Margin, while balance means nothing - free Margin is based on Equity, and Equity never stands still

4. Trading emotionally - Chasing trades without checking your margin health is preceded by being forced to stop out

Tips for effective margin management

• Hit the 50% target for the free Margin of balance. This should provide enough of a cushion or safety net

• Please always use stop losses. This protects your Equity and stops your free Margin from drying up.

• Do not have overlapping trades (positions). Each position uses Margin

• Monitor margin level daily. Treat it like your war tank - look the other way and you will be out of gas -

• Trade smaller-than-full lots. This saves the used Margin and increases your free Margin for new trades

Margin: Forex and beyond - it applies in other markets

While the terminology is Forex-based, margin concepts apply to all markets and instruments in which leverage is involved, such as stocks, commodities, crypto, CFDs, etc. In all scenarios, the broker will care about their Margin, as it offers protection, and traders need to care about their free Margin to protect their capital.

Conclusion

Used Margin and free Margin may sound technical, but the logic is simple: one shows your commitment, and the other shows your liberty. Used Margin is like the anchor that keeps your positions in position, free Margin is the air you breathe to keep you alive in the market.

If you can manage both used Margin well, you are protecting your account in case of a margin call and giving yourself a fight-off-your-margin opportunity of freedom to trade. Remember: trading is not about eliminating risk - it's about managing risk well.

If you are organized with your used Margin, and you also look after your free Margin, then you too can pragmatically survive in this chaotic world of trading.

Frequently asked questions

Answers to the questions readers ask most about this lesson.

Used margin can change when a broker recalculates collateral using current exchange rates, changes margin requirements, or applies different tiers as exposure changes. Opening, partially closing, or hedging positions may also alter the total. Whether margin stays fixed or fluctuates depends on the instrument’s calculation method and the broker’s account rules.
Zero free margin means equity equals used margin; negative free margin means equity is below it. Orders requiring additional margin will generally be rejected. Existing positions are not necessarily closed at exactly zero free margin: warnings and automatic liquidation depend on the broker’s margin rules, account type, and applicable regulatory requirements.
Used margin is the equity committed as collateral for existing positions; free margin is the equity remaining after that requirement is deducted. Free margin indicates capacity for additional margin requirements. Neither figure represents a separate cash account, and unrealized losses can reduce available capacity even when your account balance stays unchanged.
Free margin can increase when you reduce positions and release their margin requirement, deposit additional funds, or gain unrealized profits on existing trades. Profits can reverse, and adding money exposes more capital to potential losses. Closing positions also realizes their current profit or loss, so consider the resulting equity and remaining margin together.
Free margin is generally calculated as equity minus used margin. For example, if account equity is $5,000 and used margin is $1,200, free margin is $3,800. Use current equity rather than balance because open positions affect account value. Broker rules may also reserve funds for pending orders or exclude certain credits or profits.

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