Prop firms
Can You Use an Expert Advisor on an FTMO Challenge? What the Rules Say and How to Stay Safe
By Benjamin Lee · Updated · 8 min read
FTMO is one of the best-known prop firms in Europe, and one of the most searched questions about it is whether you may run an Expert Advisor. The short answer from the firm's own FAQ is yes, with conditions. This guide quotes what that page actually says, explains the parts that catch traders out, and shows how to set up an EA so that a normal bad week does not end the challenge. Rules change, so always read the firm's current terms before you pay for a challenge.
Key takeaways
- FTMO's FAQ says algorithmic trading and EAs are acceptable when the trading is legitimate and well risk-managed.
- Using a third-party EA carries a stated risk: other traders may run the same one.
- The FAQ states limits on open orders and daily positions, and says excessive server load can lead to a request to change the EA.
- Drawdown limits, not the strategy, end most challenges. Size the EA to the limit before the first trade.
- Rules differ between prop firms and change over time. Treat any summary, including this one, as a starting point.
The short answer
Yes. FTMO's FAQ on strategies says that discretionary trading, algorithmic trading and Expert Advisors are all acceptable as long as the trading is legitimate and well risk-managed. The same page attaches conditions that matter more for an EA user than for someone trading by hand. The sections below go through them in plain language, using only what the page states.
What FTMO's FAQ says about EAs
| Topic | What the page says | What it means for you |
|---|---|---|
| Strategy type | Discretionary, algorithmic or EA trading are acceptable if legitimate and well risk-managed | An EA is allowed in principle. Risk management is part of the test. |
| Replicability | The trading style should be replicable on live accounts with similar results to the evaluation account | A strategy that works only because of a quirk of the demo environment is a problem. |
| Order limits | The page states a limit of 200 orders at a time and 2,000 maximum positions per day | A hyperactive EA or a runaway grid can hit these. Check the current numbers. |
| Server strain | FTMO may alert you and ask you to adjust the EA logic or parameters | Excessive requests are a compliance issue, not only a technical one. |
| Third-party EAs | Other traders may already use the same EA, and this can risk being denied the Rewards Account | A popular commercial EA carries a rule risk that your own EA does not. |
| Capital allocation | The page mentions a maximum capital allocation rule but does not define it on that page | Find the actual limit in the firm's terms before you run several accounts. |
| Forbidden practices | Trading must not constitute Forbidden Trading Practices, which the page does not list | Read the separate list. Practices inconsistent with legitimate trading can lead to account termination. |
The third-party EA problem, explained
Most traders who buy an EA are not the only ones using it. If hundreds of accounts open the same trades at the same moment on the same strategy, a firm that funds traders on the strength of their individual skill can see that as a problem. The FTMO page says directly that using a third-party EA means you potentially run a risk of being denied the Rewards Account. It does not say that such EAs are banned, and it does not say which cases lead to a denial.
What you can do about it is limited, but it is worth doing. Ask the EA's seller whether it has been used on this firm. Change the risk inputs so your trade sizes and entries are not identical to every other user. Never run the same EA on a challenge account while also copying it to accounts you do not own. If your plan depends on a specific commercial EA being accepted, ask the firm's support team in writing and keep the reply.
What really ends challenges: drawdown limits
For an EA user, breaking a loss limit is a bigger risk than any strategy rule. Challenges set a maximum daily loss and a maximum overall loss. An EA does not know about either unless you build the limit in. A grid or martingale EA can go from a normal day to a breached account in a single move on gold or on a news release.
Work backwards from the limit. Take the daily loss figure from the firm's current rules, and decide the most you are willing to lose in one day, which should be well below it. Then size the EA so that its worst plausible day, including the biggest loss in the backtest and a gap through the stop, stays inside that number. The prop firm challenge calculator and the drawdown calculator do the arithmetic.
- 50% to 100%
- A 50% loss needs a 100% gain to get back to even, so avoid deep drawdowns
- 200
- Open orders at a time, the limit the FTMO FAQ states (check the current figure)
- 2,000
- Maximum positions per day, as stated on the same page
How to set up an EA for a prop firm challenge
Step 1: Read the current rules in full
Copy the daily loss, overall loss, minimum trading days, news rules and forbidden practices into your own notes with today's date. Rules can change during your challenge.
Step 2: Check the platform and symbol
Confirm the firm offers MT5 for your account type and the exact gold or currency symbol names. Install the EA the same way as on a normal account, as in our install guide.
Step 3: Lower the risk inputs
Start well below the setfile defaults, which are tuned for return, not for a drawdown limit. Reduce lot size or risk percentage until the largest backtest loss is a small share of the daily limit.
Step 4: Switch on every protective filter
Use the maximum spread filter, trading hours and any news filter. Turn on a daily loss stop if the EA has one. If it does not, set an equity stop yourself in the terminal.
Step 5: Backtest on the firm's data feed
If the firm's server is available on demo, run the EA there. Spread, execution and tick data differ between providers, and results can change.
Step 6: Watch it live for the first week
Check the Experts and Journal tabs daily. Look for unusual trade counts, repeated rejected orders and trades outside the hours you set.
Our wider guides cover the same ground for every firm: using Expert Advisors with prop firm challenges, which prop firms allow Expert Advisors and setting up an EA for a challenge.
Which kinds of EA fit a challenge
| EA type | Challenge fit | Why |
|---|---|---|
| Trend or breakout with fixed stops | Often workable | Each trade has a known maximum loss that you can size to the limit. |
| Low-frequency swing | Often workable | Few orders, little server load, easy to monitor. |
| High-frequency scalper | Needs care | Order counts, execution speed and broker rules on holding time all matter. |
| Grid | Risky | Open risk grows as price moves against it, so the loss limit can break in one move. |
| Martingale | Very risky | Lot size increases after losses, so a short losing run can breach the account. |
| Latency or arbitrage | Not suitable | These styles are the kind of practice firms list as forbidden. |
See EAs not suitable for prop firms for the reasons in more detail.
Worked example: sizing an EA to a daily loss limit
These numbers are an illustration, not any firm's rules. Suppose a challenge account of 100,000 euros has a daily loss limit of 5 percent, which is 5,000 euros. You decide you never want to lose more than 2 percent, or 2,000 euros, in one day, leaving room for slippage and a gap. If the EA can open up to four positions at once and each is stopped at 0.5 percent risk, the worst case with all four stopped is 2,000 euros, exactly your limit. Add a gap through the stops, and the real loss is larger.
So lower the risk per position until the worst case, including a gap, stays under the number you chose, and set an equity stop that switches the EA off for the day. Then check the same arithmetic against the overall loss limit, which is the figure that ends most challenges after a bad week rather than a bad day.
Sources and further reading
- FTMO FAQ: Which instruments can I trade and what strategies am I allowed to use?What the firm says about Expert Advisors, third-party EAs, order limits and forbidden trading practices.
- MetaTrader 5 Help: Testing ReportWhat each figure in the tester's report means, including drawdown.
Frequently asked questions
Does FTMO allow Expert Advisors?
According to the firm's strategy FAQ, discretionary, algorithmic and EA trading are acceptable if the trading is legitimate and well risk-managed. Conditions apply, including limits on orders and positions and a stated risk when using third-party EAs. Check the current rules before you buy.
Can I use a commercial EA I bought online on FTMO?
It is not banned on that page, but the FAQ warns that other traders may use the same EA, and that you may risk being denied the Rewards Account. Ask the firm's support in writing if your plan depends on it.
Which EA is best for an FTMO challenge?
No EA can be named as best. Trend and low-frequency EAs with a stop loss on every trade are easier to size to a loss limit than grid or martingale EAs. Test your choice on demo with the firm's limits applied.
Can an EA break the daily loss limit by itself?
Yes. An EA has no knowledge of your challenge limits unless you set them. Grid and martingale EAs are the most likely to breach a limit in one move, which is why risk inputs and equity stops matter.
Do the same rules apply at other prop firms?
No. Each firm has its own rules on EAs, copy trading, news trading, holding times and capital allocation. Read each firm's terms separately and keep dated notes.
Expert Advisors in these styles
Apply the checks above to any of these before you buy: read the manual, run your own backtest, and start on demo.
Keep reading
- Risk and sizingHow Much Money Do You Need to Run an EA? Euro ExamplesThe smallest account that can run an Expert Advisor safely: the 1% risk method, minimum lots on EURUSD and gold, margin, costs and euro examples from 500 to 10,000.
- Strategy comparisonWhich EA Strategy Wins Long Term?Compare MT5 Expert Advisor strategy types, from scalping and grid to hedging and arbitrage: how each earns, how each fails, and which tend to survive long term.
- Buying guideEA Buying Checklist: 15 Questions to Ask Before You Pay15 questions to ask before buying an MT5 Expert Advisor: who built it, licence terms, backtest proof, risk logic, support and refunds, with a printable checklist.
- Pillar guideMT5 Expert Advisors: The Complete Guide for BeginnersEverything about MetaTrader 5 Expert Advisors in one place: how they work, strategy types, risk, backtesting, buying safely, gold, EURUSD, prop firms and Europe.