OrderSend slippage with fractional pip pricing

Does anyone know if there is a standard way MT4 brokers deal with slippage in OrderSend and OrderClose when using fractional pip pricing?

For example, with EURUSD if it has 5 decimal place pricing and i wanted a slippage of half a pip can i set slippage to 5 ?

If so, is that standard accross these type of MT4 brokers?

What we thought as "Fractional Pip" (ie, 1.28605) is not really 0.5 pip as far as the broker's server/platform is concern. It is still 5 pips!

Therefore, if your intention is to control the slippage at that last digit, yes, your "slippage = 5" is correct.


Better yet, It would be best for your EA/Script to be self adjusting. Your EA can know it through the use of the MQL's built in function Digits or Point.



Digits return you the number of digits of a currency pair


If your broker uses 5 digits for EURUSD, then executing this will give you 5.

Point will return the tick size.
If your broker uses 5 digits for EURUSD (ie fractional pip), then executing this will give you 0.00001