What the marketplace field labeled "minimum deposit" measures
Almost every EA listing includes a line called "minimum deposit." Buyers often read it as the balance the product was designed for. That interpretation is incorrect. The marketplace minimum is the smallest balance at which the EA can still open a position, given the seller's most conservative risk preset and the broker's minimum lot size and margin requirements. The number answers "can the EA open a position here?" not "will the EA behave as the backtest or report shows?"
A practical rule: below roughly ten times the published minimum, your effective risk is likely controlled by lot-step rounding rather than the EA's percentage presets.
Why portfolio EAs need extra headroom
An EA that can open multiple positions per symbol or trade several symbols was tested with all those slots available. At the marketplace minimum, margin constraints or the lot floor may prevent the third or fourth entries. That means you will run only a subset of the intended strategy. The refused positions are often those added during drawdown, so the traded subset usually produces a different, and typically worse, equity curve.
How to compute a practical minimum for your account
1) Take the worst drawdown in the backtest for the preset you plan to use and multiply it by 1.5. The rationale is that the next drawdown is rarely smaller than the last. 2) Check the lot floor: with your symbol and chosen stop distance, compute the lot size at your intended percentage risk. At 1% risk you should aim for a computed lot that rounds to at least 0.03 so rounding changes risk by at most about a third rather than by a factor of three. 3) Convert that lot-floor requirement to a balance. For example, with a $10 stop on gold, 0.03 lot implies about $30 risk, which corresponds to a balance near $3,000. 4) Use the larger of the drawdown-adjusted figure and the lot-floor balance as your planning number. If that balance is more than you want to commit, lower the risk preset or choose a different product rather than running the EA on an undersized account.
Where the marketplace minimum appears versus the recommended balance
Treat the marketplace minimum as a technical floor, not as a planning guide. Compute your own planning balance using backtest drawdown and lot-floor checks, and match your account size to the risk preset you intend to use.