Can You Use an EA on a Prop Firm Account (FTMO etc.)?

Running an EA on prop firm capital — the capital a firm provides once you pass its evaluation — instead of your own money is an increasingly common question. The short answer: an EA itself is allowed at many prop firms, but the wrong type of EA fails you instantly. Here is what causes failure, and which EAs are a good fit.

The core of a prop firm is the drawdown limit

Prop firm evaluation and funded rules differ from firm to firm, but one thing is nearly universal: the drawdown limit.

• A daily drawdown limit (e.g., 5% of balance in a single day)
• A total (maximum) drawdown limit (e.g., 10% overall)

Breach it once and you fail on the spot. More than hitting a profit target, never touching this limit is the condition for surviving at a prop firm.

This is why martingale and grid fail instantly

Here is the decisive point. EAs that hold losers — martingale, averaging, grid — are fundamentally incompatible with prop drawdown limits.

These EAs avoid stop-losses to raise the win rate, letting floating losses grow. They look calm and high-winning most of the time, but the moment the market moves against them the floating loss explodes. That floating loss flows straight into equity-based drawdown, so it blows through a prop firm's daily and total DD limits with ease. Even with a +5,000% backtest, failing on day one at a prop firm is entirely normal.

On top of that, many prop firms explicitly prohibit martingale, grid, hedging and HFT — a rules violation that gets the account revoked.

The good fit: low DD, hard stop, no grid

Conversely, the EAs that are structurally compatible with prop rules are:

• A hard stop on every trade: the floating loss never runs past the stop, so DD is controlled.
• No grid, no martingale: no rules violation.
• Low equity drawdown: unlikely to touch daily or total DD limits.
• One position at a time: risk is easy to read.

A trend-following or breakout EA whose equity DD sits in the low teens may be runnable within many prop firms' total DD limits (around 10%).

Always check before you run one

Prop firms vary a great deal. Before running an EA, always check the firm's own rules for the following:

1. Are EAs (automated trading) allowed? Some firms prohibit them.
2. Are martingale, grid, hedging and HFT prohibited?
3. What are the daily and total drawdown limits? Does your EA's equity DD fit within them?
4. Are there news-time trading restrictions? Some firms ban trading around releases.
5. Are there minimum-hold-time or weekend-holding restrictions?

Rules change. This article is general and does not guarantee behavior at any specific firm. Make the final decision against each prop firm's current rules.

Check it yourself

Our free EA (a closed-bar Donchian breakout) is hard stop, no grid, no martingale, one position at a time, with an equity DD of 10.3% on USDJPY real-tick testing. Run it on a prop firm's demo evaluation account and see for yourself whether the DD stays within the limits. Confirm the behavior for free before deciding.

Donchian Trend Engine (free EA)

Every product's equity-based real data is on the verification page. The lower a product's DD, the better it fits prop rules.

Summary

• An EA is allowed at many prop firms, but the wrong type fails instantly.
• The core of a prop firm is the daily and total drawdown limit.
• Martingale, grid and averaging breach DD limits via floating losses — and are often prohibited outright.
• The good fit: low DD, hard stop, no grid, one position.
• Before running one, verify EA permission, prohibited methods and DD limits in that firm's rules.

Related: Equity drawdown vs balance drawdown · Why a 90% win rate is a warning sign · The risks of averaging (nanpin) EAs