Prop Firm Risk
Size EA trades from risk percent and stop distance.
Hard-coded lots can make a backtest look simple, but they often hide inconsistent account risk. A fixed-risk function starts with account equity, risk percent, tick value, and stop distance.
Search intent
The developer wants safer lot sizing logic for MQL5 Expert Advisors.
Cluster
Prop Firm Risk
Tool path
prop firm ea risk checker
Reader
prop trader
Optional follow-up for Fixed-risk lot sizing for an MQL5 EA
Open the free desk first. Opt in only if you want manual follow-up for the Fixed-risk lot sizing for an MQL5 EA risk workflow.
Lead activation handoff
No email wait is required. After saving the opt-in, continue into the free desk with the same blocker so the visitor-to-lead-to-workflow path is measurable.
Continue in free deskChoose the workflow you want, then opt in only if you want Workfusionapp updates.
Start with validated stop distance
Lot sizing depends on the stop. If the stop is invalid or missing, the EA should not calculate a trade volume.
Normalize volume
Brokers enforce min lot, max lot, and lot step. The EA should normalize and reject impossible sizes.
Cap final risk
Even after normalization, confirm the final volume does not exceed the intended risk too aggressively.
Use the tool
Generate or review your sizing function in Workfusion before running a full backtest.
Related guides
Continue the EA build path.
Compiler Fixes
Fix invalid stops in an MT5 EA
How to diagnose invalid stop-loss and take-profit errors in MT5 Expert Advisors before live or tester execution.
Prop Firm Risk
Daily drawdown guard for an EA
Design a daily loss guard for an Expert Advisor so trading stops when the account approaches the daily risk limit.
EA Generation
EA input parameters checklist
The core input settings every serious MT4/MT5 Expert Advisor draft should expose before testing.