Running 3 to 10 accounts with trade copiers? Calculate exact proportional lot sizes, lot multipliers, and total aggregated portfolio risk so smaller accounts never breach daily limits.
Essential for funded trader discords, trade copier services, and multi-firm portfolio managers.
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Account 1 acts as your Master Account. Copier multipliers are computed relative to Master Account lot size.
| Role | Firm Name / Tag | Account Size | Risk % | Dollar Risk ($) | Calculated Lot | Copier Multiplier | Est. Profit TP ($) | Action |
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If your Master Account is $100k and Slave Account 2 is $25k, copying with a 1:1 lot size will place 4x the intended risk on the $25k account. Proportional copying ensures each account risks strictly 1% of its respective balance.
Most trade copiers (SocialTraderTools, Local Trade Copier) have two modes: Lot Multiplier (e.g. 0.50x or 0.25x of Master) and Risk Percent Mode. This calculator gives you the exact settings for both.
Traders often think: "I'm only risking 1%!" But if you have four $100k accounts taking the exact same EURUSD short, a sudden high-impact slippage event costs you $4,000+ in personal loss buffer simultaneously.
Yes! Top prop firms (FTMO, Funding Pips, The5ers, FundedNext) explicitly allow trade copiers between accounts registered in your own name. What is strictly prohibited is copying trades from external 3rd-party signal channels or account managers with shared IP clusters.
In your copier settings on the Slave account, choose "Custom Multiplier" or "Multiplier by Account Ratio". Input the multiplier displayed in the table above. Whenever the Master opens a trade, the Slave opens the exact proportional volume.
Download the complete quantitative guide: Position Sizing Formulas, Prop Firm Drawdown Rules, and MQL5 Parameter Cheat Sheets.
