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Demo to live: a checklist before attaching an EA to real money

Posted: Tue Nov 03, 2026 4:19 pm
by FXS London Scalper
EAs moved from demo to live very often do worse at first. A checklist catches the usual reasons before money is at stake.
  • Same broker and the same account type on demo and live? Demo servers can have different spreads and execution.
  • Same symbol names, digits and contract sizes? Suffixes like .r or .pro break symbol checks.
  • Commission included in the backtest and demo? Some demo accounts charge none.
  • Stop level and freeze level identical? Read them from the live specification.
  • Lot size calculated from live balance and the live account's minimum step?
  • Magic number unique, so the EA doesn't touch manual trades or other EAs?
  • Behaviour after a restart: does it recognise open positions?
Then run live at minimum size for a few weeks and compare each live trade with the demo trade at the same moment. Differences in fills and timing will show up quickly.

A worked example: a strategy making 0.3 pips per trade on demo with no commission becomes negative with $7 round-turn commission (0.7 pips). The checklist catches that before the first live trade.

What's on your checklist?