A demo account is a rehearsal. It is only useful if you rehearse the real thing.
Quick answer: A forex demo account is a practice account that lets you trade live-style prices with virtual money. It is most useful when you set the balance to what you plan to trade live, follow the same written rules and position sizing, subtract a realistic cost haircut, log every trade in R and move to a small live account only when a written scorecard says you are ready, not when you simply feel ready. Use the free forex position size calculator so your demo trades are sized the way your live trades will be.
Key takeaways
A demo account teaches mechanics and process (orders, stops, sizing, routine). It cannot fully teach fear, greed or the cost of slippage.
The most dangerous setting is the starting balance. Practicing with $100,000 teaches lot sizes you will never use live.
Demo fills are usually kinder than live fills, so subtract a cost haircut from your results before you trust them.
Count trades, not weeks. About 100 trades under the same rules is a common starting point, and slower strategies need much longer to get there.
Set the exit criteria in writing: a 7-point scorecard decides when to go live (small), so you do not stay in demo forever.
What Is a Forex Demo Account?
A forex demo account (also called a practice account) is a trading account funded with virtual money. You place buy and sell orders on a trading platform using live-style prices, and your profit and loss are calculated as if the money were real, but nothing is at stake. It is free to open on most platforms, and it is where most beginners place their first trades.
That makes it a good place to learn the mechanics: how to place a market order and a pending order, how to set a stop loss and a take profit, how to size a position and how your platform behaves. If you are new to the vocabulary, start with our forex for beginners guide.
What a Demo Account Cannot Teach You
A demo account is a simulation, and simulations are kinder than markets. Two limits matter most:
Execution is simpler. One broker's education page notes that demo trades are not subject to slippage, interest and dividend adjustments or out-of-hours price movements (see the IG demo trading FAQ). In live trading, fills can be worse than the price you saw, especially in fast markets.
The pressure is missing. The same page says emotions can be muted in demo trading, and another guide warns that demo results can create false confidence and that traders may react differently under pressure than in the calm of a demo (see this overview of the basics of a trading demo account).
Neither source says demo is useless. The point is that demo proves your process works in good conditions, not that your results will carry over. The rest of this guide shows how to close as much of that gap as you can.
Practice with the balance you plan to trade, not the one the platform offers.
How to Set Up a Realistic Demo Account
Set the balance to your planned live balance. Many demo accounts start with a large virtual balance, but position size depends on the account. At 1% risk with a 25-pip stop on EUR/USD, a $100,000 demo account sizes at 4.00 lots, while a $1,000 account sizes at 0.04 lots (risk ÷ (stop × $10 per pip)). If you practice 4.00-lot trades, you are rehearsing something you will not do live. If the platform does not let you change the balance, size your trades as if it were your real balance.
Use the same written rules. Entry, stop, target, session and risk per trade, exactly as you plan to use them live. See our forex trading strategies guide if you have not chosen a style.
Size every trade from your risk. Use the position size calculator and the stop loss calculator, and round the lot size down.
Trade the hours you will actually trade. Check session times in your time zone with the forex session converter.
Log every trade in R. Record the stop, the size, the result and a "followed the plan" yes or no. Use the free trading journal calendar or follow our trading journal Excel guide.
Apply your risk limits. Use a daily and weekly loss limit exactly as you would live (see our forex risk management guide).
The Cost Haircut: A Worked Example
Because demo fills are usually kinder, subtract a cost "haircut" from each trade before judging the results. Suppose you add an extra 1 pip of cost per trade to cover wider live spreads and slippage (an assumption you should adjust to your own broker). The haircut in R is the extra pips divided by your stop:
With a 25-pip stop: 1 ÷ 25 = 0.04R per trade.
With a 10-pip stop: 1 ÷ 10 = 0.10R per trade.
Now take a demo result of +12R over 50 trades, which is +0.24R per trade:
Average stopHaircut per tradeTotal haircut over 50 tradesResult after haircutExpectancy after haircut25 pips0.04R2R+10R+0.20R per trade10 pips0.10R5R+7R+0.14R per trade
The same demo result looks 17% worse with 25-pip stops and 42% worse with 10-pip stops. This is why tight-stop strategies are the hardest to trust from a demo (see our forex spread guide for the full cost math). Check the cost of your own stop distances before you rely on demo numbers.
Subtract a realistic cost from every demo trade before judging the result.
How Many Demo Trades Do You Need?
The number of trades matters, not the number of weeks. A rough 95% margin of error on a win rate is 1.96 × √(p × (1 − p) ÷ n). For an observed 40% win rate:
TradesApproximate margin of errorPlausible true win rate30± 17.5 percentage pointsabout 22% to 58%100± 9.6 percentage pointsabout 30% to 50%300± 5.5 percentage pointsabout 35% to 46%
With 30 trades, a strategy with a true 40% win rate could easily look like 25% or 55%. That is why about 100 trades under the same rules is a common minimum, with more being better. How long that takes depends on your style:
Your paceWeeks to reach 100 trades15 trades a week (active day trading)about 6.7 weeks5 trades a week20 weeks2 trades a week (swing trading)50 weeks
A swing trader may need close to a year to collect 100 demo trades. If that sounds too slow, speed up the evidence with a historical test (see our forex backtesting guide) and use demo to confirm the mechanics.
The Demo-to-Live Scorecard
Staying in demo forever is a trap, and so is leaving it on a feeling. Decide the exit rule in advance. Score the seven criteria below (the thresholds are examples to adapt, not rules). Criteria 3 and 4 are mandatory gates: if you fail either one, you stay in demo no matter what else you score.
#CriterionExample thresholdHow to check1Sample sizeAt least 100 trades under the same written rulesCount the trades in your journal2Rule adherenceAt least 90% of trades followed the plan"Followed the plan" yes or no column3 (gate)Risk adherenceNo trade risked more than the planned 1R, and no limit was brokenCompare actual risk with plan for every trade4 (gate)Expectancy after the haircutAbove zero after subtracting the cost haircutAverage R after haircut (see the example above)5DrawdownMaximum drawdown within your limit (for example 10%)Largest fall from a peak in your R total6Market conditionsTraded at least two different conditions (for example a trending and a ranging period)Review the dates in your journal7Review habitWeekly reviews completed and journal 100% completeCheck for gaps
Decision: if you pass both gates and score at least 6 of 7, you have earned a small live account. If not, stay in demo and fix the weakest line. The scorecard does not predict profit. It only tells you that your process is consistent enough to risk a small amount of real money.
A written scorecard replaces the feeling of being ready.
Going Live: The Bridge
The first live trades are a different test, because they add the emotions and costs a demo cannot. Treat the first stretch as part of the learning:
Start small. Use the smallest practical size and a lower risk per trade for the first 20 to 30 live trades (for example 0.25% to 0.5% instead of 1%). Check that your broker's minimum lot does not already risk more than planned: with a 25-pip stop, 0.01 lot risks about $2.50.
Keep the same rules and the same journal. Only the money changes.
Compare live with demo. After 20 to 30 trades, compare win rate, average R and costs. A big gap is information: look at spreads, slippage and your own behavior.
Define a pause rule in advance. For example, if the live account falls 5% from its peak, go back to demo and review before you continue.
Scale up slowly. Raise risk only after the live results are consistent with the demo.
Whatever you do, only use money you can afford to lose, and check your broker's regulation and terms. Remember leverage: effective leverage depends on your lot size, not on the maximum your broker offers (see our forex leverage guide).
Choosing a Demo Account
I do not recommend a specific broker here. Instead, check these points about any demo account:
Regulation. Check which entity would hold your live account where you live, using the regulator's own website.
Same platform as live. You want to practice on the platform you will actually use.
Adjustable balance. Being able to set a realistic starting balance is a real advantage.
Realistic conditions. Look for spreads and instruments similar to the live account, and expect live fills to be somewhat worse.
Expiry and limits. Some demo accounts expire or limit features, so read the terms.
Live account terms. Demo pages often leave out minimum deposits, fees and regional restrictions, so verify the live terms separately.
If you need an idea of which pairs to practice on, our forex currency pairs guide explains how to pick one or two.
Move from demo to live in small steps, not in one jump.
7 Demo Account Mistakes
Using a huge virtual balance. It teaches position sizes you will never trade.
Ignoring costs and slippage. Demo results look better than live ones.
Trading it like a game. Reckless demo habits become live habits.
No journal. Without records, a demo account teaches nothing you can measure.
Changing the rules every few days. You never collect a clean sample.
Staying in demo forever. Set exit criteria and go small when you meet them.
Going live with full size. The first live trades should be the smallest you will ever take.
Log every practice trade as seriously as a live one.
Frequently Asked Questions
What is a forex demo account?
A forex demo account is a practice account funded with virtual money. You trade live-style prices without risking real money, which makes it useful for learning a platform and practicing a process.
Is a forex demo account free?
Most demo accounts are free to open, but terms vary. Some require personal details and some expire, so read the terms of the one you choose.
How long should I use a demo account?
Use it until you meet written criteria, not for a fixed number of weeks. A common benchmark is about 100 trades under the same rules, and slower strategies need much longer to collect them.
Is demo trading the same as live trading?
No. Demo trading removes the pressure of real money and is usually not subject to slippage, so fills can be better than live ones. Practice the process in demo, and expect live results to differ.
Can I make money on a demo account?
You can make virtual profit, but it is not real money and it does not guarantee live profit. Judge a demo by whether you followed your rules and risk limits, not by the size of the virtual balance.
What balance should I use for a demo account?
Use the balance you plan to trade live. A very large virtual balance leads to lot sizes you would never use with your real account.
Are demo accounts rigged?
Demo conditions are simulated and can be kinder than live ones, for example with better fills, but that is a limitation, not proof of manipulation. Compare live and demo results over many trades and check your broker's regulation.
When should I move from demo to live?
When you pass a written scorecard, including a positive expectancy after costs and no broken risk rules. Then start with the smallest size and a lower risk per trade, and compare live results with the demo.
Conclusion
A demo account is a rehearsal, and rehearsals only help if you rehearse the real thing: your balance, your rules, your costs and your limits. Set it up realistically, journal every trade in R, apply the cost haircut and let a written scorecard tell you when to go small and live. Start with the forex position size calculator on your next demo trade, and explore the other free forex trading tools.
Size Your Demo Trades Like Live, Free
Risk disclaimer: This article is for educational purposes only and is not financial advice. Thresholds, scorecard criteria and cost assumptions are examples to adapt and test, not recommendations or expected results. A demo account does not guarantee live results. Trading forex and CFDs is high risk, and the US CFTC warns that margin trading can leave you responsible for losses greater than your deposit (see the CFTC forex advisory). Only trade with money you can afford to lose.
