MT4 vs MT5: What's the Difference? 

MetaTrader 4 and MetaTrader 5 are the two most widely used trading platforms in retail forex. Both are built by MetaQuotes, both are free for traders, and when you open them for the first time they look almost identical. The differences only become obvious once you start trading on either.

MT4 launched in 2005, built specifically for forex. MT5 came out in 2010 as a multi-asset platform: stocks, futures and options on top of FX, a more powerful programming language, multi-threaded backtesting, a few execution features MT4 will never get. On paper, MT5 is the newer and more capable platform.

And yet, 15 years after MT5 launched, MT4 still has the larger active trader base and broader broker support. That isn't inertia — there are specific reasons most retail forex traders are still on it, and specific reasons some traders genuinely belong on MT5. This article covers what actually differs between the two, when each platform makes sense, and how to think about switching if you're considering it.

The complete feature comparison

A few things from that table that get lost in marketing copy:

MT4 isn't discontinued. MetaQuotes stopped active feature development in 2018, but the platform still gets security and stability updates, and almost every major broker still supports it. The "MT4 is dead" line you see online isn't accurate — it's mature, not abandoned.

MT5 isn't always faster. Its multi-threaded backtester is dramatically faster for testing complex EAs, but for live trading on a single chart with a few indicators, you won't feel a speed difference. The performance gap matters mostly to algo developers running large optimization runs.

The two languages aren't compatible. This is the single biggest practical reason traders stay on MT4. An EA or custom indicator written in MQL4 won't run on MT5. Migrating means rewriting — sometimes substantially. We'll come back to this below.

What you can actually trade on each platform

The biggest practical difference between the two is the range of markets they were designed for.

MT4 was designed for forex. Brokers added CFDs (indices, commodities, sometimes crypto) on top, but the underlying data model is built around currency pairs. Stocks and futures can technically be traded on MT4 if your broker offers them as CFDs, but the experience is clunky — symbol structures, tick sizing and order routing weren't built with them in mind.

MT5 was designed for multi-asset trading from day one. Native support for stocks (with proper symbol structures, dividends, corporate actions), futures (with proper contract specifications and expiries) and options. If you want to trade equities or futures alongside forex from a single platform, MT5 is the only one of the two that handles them properly.

This is also why most US brokers default to MT5. US regulation requires the netting accounting model (one position per instrument), which MT5 supports natively. MT4 only supports hedging mode — multiple opposite positions on the same instrument — which is incompatible with how US brokers operate.

Order types and execution

This is where MT5 has a clear, meaningful upgrade. MT4 supports four order types. MT5 adds two more.

The two new ones — Buy Stop Limit and Sell Stop Limit — are conditional orders that combine a stop trigger with a limit entry. Concretely: imagine EUR/USD is at 1.0850 and you want to buy a breakout above 1.0900, but only if price first pulls back to 1.0895. With a Buy Stop Limit, you set the stop trigger at 1.0900 and the limit price at 1.0895. When price hits 1.0900, a Buy Limit order at 1.0895 gets placed automatically. If price never pulls back, you don't enter — exactly what you wanted. MT4 can't do this in a single order; you'd have to babysit the chart and place the limit manually after the breakout.

Beyond order types, MT5 also gives you:

• Native Depth of Market. You see visible bid/ask sizes at each price level. MT4 has no native DOM (some brokers add it via plugins, but quality varies wildly).
• Cleaner partial-fill handling, especially relevant for stock trading where partial fills are common.
• Both hedging and netting account modes depending on broker setup. MT4 is hedging-only.

For a forex day trader using market and pending orders, the difference is academic. For a stock or futures trader, or anyone using more complex order strategies, MT5's expanded toolkit genuinely matters.

MQL4 vs MQL5: if you use Expert Advisors

If you write or run Expert Advisors and custom indicators, this is probably the section that decides your platform.

int OnInit() {
   double ma = iMA(NULL, 0, 20,
     0, MODE_SMA, PRICE_CLOSE, 0);
   return(INIT_SUCCEEDED);
}

int OnInit() {
   int handle = iMA(_Symbol,
     PERIOD_CURRENT, 20, 0,
     MODE_SMA, PRICE_CLOSE);
   return(INIT_SUCCEEDED);
}

MQL4 is procedural with C-like syntax. It's easier to learn, and it has a massive code base of free and paid EAs and indicators built up over 20 years. The reason most retail traders who use EAs are still on MT4 is purely ecosystem — the tool they want already exists for MT4 and would have to be rebuilt for MT5.

MQL5 is object-oriented and much closer to C++. It's more powerful: multi-threaded code, proper OOP design patterns, optimization across multiple CPU cores, cloud testing. The trade-off is a steeper learning curve and a smaller (but quickly growing) catalogue of pre-built tools.

The practical decision:

• You already have an MT4 EA you depend on — stay on MT4 unless you're willing to pay for a rewrite. A non-trivial EA can take weeks to port properly, and the function signatures, indicator handles and position management are all different. It's not a copy-paste job.
• You're starting a new algo project today — go MQL5. Cleaner language design, better tooling, longer runway. Worth the steeper learning curve.
• You buy commercial EAs — check what version the EA you want is written for before you pick a platform. Most legacy commercial EAs are MT4-only; newer ones are increasingly MT5-native.

The MQL5.com market (MetaQuotes' official EA and indicator marketplace) has tens of thousands of MT4 products and a smaller but rapidly growing MT5 catalogue.

Charting and analysis tools

Both platforms use the same charting paradigm: candle/bar/line charts with technical indicators and graphical objects you drop on top. The differences are quantitative rather than qualitative.

• Timeframes: MT4 has 9, MT5 has 21 (adds non-standard intervals like M2, M6, H2, H6, H12). Most traders only ever use four or five timeframes anyway.
• Built-in indicators: MT4 has 30, MT5 has 38.
• Graphical objects: MT4 has 31, MT5 has 44.
• Economic calendar: built into MT5, missing from MT4 (you'll need an external website or a broker plugin on MT4).

For most discretionary traders, none of this is a real differentiator. I've never heard a trader say "I'd take this trade if only I had Vidya as a built-in indicator." Both platforms can do whatever you need analytically. The real limitation in either is that the chart aesthetics look dated next to TradingView or modern web platforms — not the analytical capability.

Mobile and web apps

Both platforms have official iOS and Android apps and web-based versions. The MT5 mobile and web apps are noticeably more polished — newer UI, smoother chart interactions, faster sync with the desktop terminal. The MT4 app is functional and stable, but the underlying design hasn't changed substantially in years and it shows.

If you do most of your trading from your phone, MT5 is the better experience. If you're desktop-primary and only check positions on mobile occasionally, the difference is minor.

Which platform fits which trader

The matrix above maps the choice by trader profile. Three additional points worth flagging:

If your broker only offers one of the two, the decision is made for you. Most major retail brokers offer both, but smaller and regional brokers are often MT4-only.

If you live in the US, you're almost certainly going to end up on MT5 because of the netting requirement. A few US brokers offer MT4 for forex-only accounts, but the default is MT5.

If you're completely new to trading, MT4 has a softer learning curve and a much larger pool of free tutorials, YouTube content and broker training built around it. Start there. You can always migrate later if you need MT5's specific features.

Should you switch from MT4 to MT5?

If you currently use MT4 and you're wondering whether to migrate, here's how to think about it.

Switch to MT5 if any of these apply:

• You want to add stocks, futures or options to your trading
• You need a netting account (US regulation, prop firm requirement)
• You need DOM data, native economic calendar or Stop Limit orders
• You're starting a new EA project from scratch
• You run heavy backtests/optimizations and want multi-threading
• Your broker has announced an MT4 sunset (a few have)

Stay on MT4 if any of these apply:

• You have a working EA setup that took years to dial in
• You only trade forex/CFDs and have no plans to expand
• You depend on commercial MT4-only indicators or EAs
• Your broker's MT5 implementation is missing features you actually use on MT4 (more common than you'd think — broker MT5 setups vary widely)
• You're a discretionary trader who's happy with what already works

There's no urgency. MetaQuotes isn't going to remove MT4 from existence, and brokers will keep supporting it as long as there's demand — which there still is.

If you do decide to switch, a few practical things worth checking before you commit:

• Does your broker actually offer MT5? Most do, but confirm — especially smaller and regional brokers.
• Are the symbol names identical? Some brokers use slightly different symbols on MT5 (EURUSD vs EURUSD.r, for example). This will silently break any EA that hard-codes symbol names.
• Are your indicators MT5-compatible? Most popular free MT4 indicators have an MT5 version on MQL5.com — but not all. Check before you assume.
• Are your EAs portable? Free MT4 EAs rarely have MT5 versions. For paid EAs, contact the developer about an MT5 license.
• Do you understand netting vs. hedging? If your broker's MT5 is netting-only, hedging-based strategies need to be re-thought from the ground up.
• Run both platforms in parallel for at least two weeks. Don't close your MT4 setup the day you open MT5. Trust the new environment first.
• Test on a demo MT5 account before committing real capital, especially if you rely on EAs.

A quick note for brokers

This guide is written for traders, but if you're reading it as a broker evaluating which platform(s) to offer, the calculation is different.

Most successful retail brokers today offer both MT4 and MT5, plus a proprietary or third-party web platform for clients who want a more modern interface. Trader demand for MT4 is still high enough that "MT5 only" is rarely the right call, even though the licensing economics are the same per server.

The bigger question is whether MetaTrader (in either version) is the right anchor for client experience at all. The platform's UI, mobile experience and onboarding are showing their age compared to multi-asset web platforms designed in the past few years. That's the conversation a lot of brokerages are having right now — and where modern platform alternatives, including the multi-asset solutions Quadcode and others build, get evaluated alongside the MetaTrader stack.

That's a topic for a different article. For traders, the choice still comes down to: pick the platform that matches your asset focus, your EA needs and your broker's offering — and don't let the "newer = better" framing make the decision for you.