Skip to content
EABuilder Pro | Docs

Linear lot size

The Linear lot size money manager will adjust the lot size based on the available balance or equity. If there’s a minimum or maximum lot size the broker has set for the symbol you’re trading, the lot size will be at least the minimum and not more than the maximum per order.

For Expert Advisors (EAs) created from 29 April 2024, the lot size will be calculated based on a percentage of your balance/ equity, using this to determine the position size equal to the required margin. For example, if 1% of your account equity is $100 and opening 1 Lot of EURUSD requires $3000 margin, your lot size would be calculated as $3000 / $100 = 0.03 lot. Similarly, if 1 BTCUSD Lot requires $36,000 margin, your lot size would be 0.00272 lot. However, if your broker’s minimum lot size for a symbol is 0.01, the EA will open at that size, even if it consumes a higher percentage of your margin, such as 3.6%.

You can determine the lot size corresponding to each percentage by adding the EA to a Demo chart and watch the Experts tab, which will indicate the lot size for each percentage.

The lot size calculated for 1%, 10% and 25%.

Settings

  • Balance/ equity: Select if the lot size should be based on the account balance or equity.
  • Percentage: A setting of 1% will create a lot size based on $100 on a 10k Account. 20% will create a lot size based on $2000 on a 10k account, etc. What if you enter 0%? The lot size is never smaller than the minimum lot size or larger than the maximum lot size. This means that 0% may result in a 0.01 lot order.