MetaTrader 5 vs MT4: Differences and Migration

MT5 is not an upgrade of MT4 — it is a different platform that shares a similar interface.

Why the comparison matters

Many beginners assume MT5 is simply "MT4 version 5." In reality, MetaQuotes rewrote the engine, the language, and the execution model. Brokers offer both, so you must choose deliberately.

Core differences

Feature	MT4	MT5
Release year	2005	2010
Assets	Forex, CFDs	Forex, stocks, futures, options
Language	MQL4	MQL5 (object-oriented)
Timeframes	9	21 (including M2, H2, MN1)
Depth of Market	No	Yes
Economic calendar	No	Built-in
Strategy tester	Single-threaded	Multi-threaded, cloud
Hedging	Default	Configurable (FIFO by default)

Execution and accounting

MT5 defaults to netting — positions on the same symbol are merged. If you buy 1 lot EURUSD and later buy another 1 lot, you hold 2 lots at the average price. MT4 keeps each ticket separate (hedging).

For US residents under FIFO rules, MT5's netting is actually a benefit. For discretionary traders who scale in and out of separate tickets, MT4 is friendlier.

Charting improvements

MT5 added:

More timeframes, including built-in renko and range bars
Tick charts for scalpers
A built-in economic calendar
Real Depth of Market (DOM) for exchange-traded instruments

MQL4 vs MQL5

MQL5 is closer to C++: classes, pointers, and a standard library. An MQL4 indicator will not run on MT5 without rewriting. EAs must be ported manually — expect a few hours for simple logic, days for complex systems.

Should you migrate?

Pick MT4 if:

You rely on legacy indicators and EAs from MQL4 communities
You trade forex only and prefer hedging
Your broker offers MT4 with tighter spreads

Pick MT5 if:

You trade stocks, futures, or options alongside forex
You need depth of market and exchange-style data
You do algorithmic backtesting (multi-threaded tester is dramatically faster)
You want a forward-compatible platform MetaQuotes actively develops

Migration checklist

Export your custom indicator and EA source files (.mq4).
Identify which tools you actually use — most users rely on 3–5.
Search the MQL5 market for equivalents before porting code.
Open an MT5 demo with the same broker.
Recreate chart templates manually (templates are not cross-compatible).
Run your strategy in the strategy tester side-by-side with MT4 to verify parity.

Practical advice

Do not migrate just for novelty. If your MT4 setup is profitable and you trade forex only, the migration cost usually exceeds the benefit. Migrate when your needs change — adding futures, faster backtests, or DOM-based execution.

Next: install your first custom indicator and EA on either platform.