calculate required margin for opening a position
Info
The calculate required margin for opening a position is a Script for MetaTrader 4 that description:this library includes three functions to calculate the required margin for any currency pair in the deposit currency. the calculation is based on a lot size of 1.
Usage
This tool is typically used for enhancing chart analysis and decision making.
Platform
This Script works exclusively on MetaTrader 4 (both build 600+ and newer versions).
Setup
Place the downloaded file in MQL4/Scripts folder via File ? Open Data Folder in MetaTrader 4.
How to Install and Use calculate required margin for opening a position
1. Installation: Move your script file into the MQL/Scripts directory and restart the platform.
2. Execution: Drag the script onto a chart; it will perform a one-time action, such as closing all open orders or clearing chart objects.
3. Editing: Use MetaEditor (F4) to modify code, click "Compile," and verify no errors appear in the terminal before running.
4. Removing: Scripts stop automatically, but you can remove them manually by right-clicking the chart and choosing "Remove Script."
Frequently Asked Questions
Q: How are scripts different from EAs? A: Scripts execute a single action and then stop; EAs monitor the market and trade continuously.
Q: Can I assign a hotkey to a script? A: Yes, right-click the script in the Navigator, select "Set Hotkey," and define your preferred keyboard shortcut.
Q: Why did my script stop? A: Scripts are designed to stop immediately after finishing their programmed command; this is normal behavior.
What this tool does
description:this library includes three functions to calculate the required margin for any currency pair in the deposit currency.
Typical Use Case
This Script excels in automated trading and technical analysis on MetaTrader 4.
Compatible Platform & Setup
This Script works on MetaTrader 4. Place the file in the MQL4/Scripts folder and restart the terminal.
Description & Settings
Related: Calculate Profit from Time - another powerful script for MetaTrader 4 traders.
description:this library includes three functions to calculate the required margin for any currency pair in the deposit currency.
Also recommended: calculate pip difference over the last n bars - similar script with strong performance on MetaTrader 4.
the calculation is based on a lot size of 1.0.1. getmarginforopening( int dir, string smb ) function - performs the margin calculation. it returns the margin amount for a 1.0 lot.
2. three other functions are auxiliary. descriptions are included within the library.
updated: 12.02.2026 msk a new version of the library was uploaded. the previous version contained an error. users who downloaded the previous version should download the new one. comparing the code will show the corrections.
You may also like: utility diamond for root binary miner - excellent alternative for script users on MetaTrader 4.
Source Code
#property copyright "robotfx"
#property link "https://robotfx.org"
#property library
double getmarginforopening( int dir, string smb ){
int leverage = accountleverage();
double contract = marketinfo( smb, mode_lotsize );
string acccurrency = accountcurrency();
string margincurrency = stringsubstr( stringtrimleft( smb ), 0, 3 );
string profitcurrency = stringsubstr( stringtrimleft( smb ), 3, 3 );
string calccurrency ="";.......
⚠ Limitations & Risk Warning
- This tool is provided for educational and testing purposes only.
- Past performance does not guarantee future results.
- Trading involves substantial risk of loss. Use on a demo account first.
- Results may vary depending on market conditions, broker, and settings.
- We recommend thorough backtesting and forward testing before using with real funds.