MT4 or MT5 — which platform to choose in 2026?

MetaTrader 4 launched in 2005 and was the de facto standard for retail forex for a decade — most brokers offered it as the only option, and thousands of MQL4 developers built an ecosystem of indicators and Expert Advisors. MetaTrader 5 arrived five years later, in 2010, as a successor with a different engine, a different language (MQL5), and support for stocks, futures, options and ETFs alongside forex. For another ten years MT4 held its ground through inertia and clients reluctant to switch. By 2026 that balance is behind us: according to FXBlue statistics from the first quarter of 2026, MT5 is offered by eighty-nine percent of regulated ECN brokers, while MT4 is being actively retired or moved into legacy mode. This article compares both platforms on eight criteria that matter to a retail client — and shows when MT4 still makes sense, and when it merely signals that the broker is not investing in infrastructure.

A brief history — why MT5 was built at all

MetaQuotes (a Cypriot company founded in 2000) launched MT4 in response to the growing retail forex market. The platform was lightweight, had a simple programming language (MQL4), and ran reliably on the modest hardware of 2005. The success was huge — at its peak (2012-2015) over eighty percent of EU retail clients used MT4 as their primary platform.

MT4\'s problem became what it was not designed for. The 2018 ESMA requirement on leverage caps and negative-balance protection demanded new order types and better risk execution. Brokers offering CFDs on stocks, futures and options alongside forex needed a platform supporting those instruments. The growing ECN segment needed Depth of Market, which MT4 structurally lacked. MetaQuotes addressed all of these in MT5 — which is not a "better MT4" but a separate project written from scratch in a different paradigm.

What MT5 does better than MT4 — eight concrete differences

The list is not marketing. These are measurable differences that affect daily trading:

• Instrument coverage — MT5 supports stocks, futures, options, ETFs, cryptocurrencies alongside forex and CFDs. MT4 handles forex and CFDs only, as synthetic instruments.
• Order types — MT5 has 21 order types (including fill-or-kill, immediate-or-cancel, time-in-force). MT4 has 7. The difference matters to advanced traders; for basic market orders it is invisible.
• Depth of Market — MT5 shows the full order book at ECN/STP brokers. MT4 has no such feature at all, which is a deal-breaker for scalpers.
• Strategy Tester — MT5 has a multi-threaded backtester with multi-currency mode (you test an EA across a portfolio simultaneously). MT4 tests single pairs sequentially, several times slower.
• Economic calendar — built directly into MT5 with alerts before CPI, NFP, FOMC releases. On MT4 it requires third-party plugins.
• Account models — MT5 lets you pick hedging (each trade separate) or netting (single net position per instrument). MT4 supports hedging only.
• Programming language — MQL5 is more object-oriented, with better standard libraries, an easier debugger, and richer reference docs. MQL4 is a 2005 procedural language whose idioms feel awkward today.
• Multi-core performance — MT5 uses all CPU cores, MT4 is limited to a single thread.

For a retail client trading manually on majors a dozen times a week, two of those eight matter: the account model when picking a broker (hedging vs netting) and the macro calendar. The other six matter to scalpers, EA developers, and multi-asset traders.

When MT4 still makes sense — three scenarios

Despite MT5\'s dominance, three specific situations still justify staying on MT4.

First: you rely on a specific Expert Advisor written in MQL4 that you do not intend to port. Commercial EAs from the 2010-2018 vintage whose authors never released an MT5 version run only on MT4. Migrating such an EA takes a few hours of experienced developer work (200-500 EUR on MQL5.com), because some API functions have different names or behaviour.

Second: your broker only offers MT4. This signals that the broker is not investing in its technological infrastructure — in 2026 every serious broker offers at least MT5, often cTrader and a proprietary web platform as well. Staying with an MT4-only broker means accepting a smaller instrument universe and no Depth of Market.

Third: you trade spot forex manually, on major pairs, in a day-trading or swing-trading style, without Expert Advisors. For that profile the difference between MT4 and MT5 is practically imperceptible. All technical indicators, all order types needed for basic trading, all chart analysis features are identical across both platforms.

"A trading platform is a tool, not a strategy. A trader who spends more time choosing between MT4 and MT5 than building a repeatable procedure is starting at the wrong end of the pyramid. First the setup, the plan, the journal — then the tool. Every licensed platform in 2026 is good enough for a retail client who has a real edge." — MetaQuotes Software Corp., Platform Selection Guide for Retail Traders, white paper, 2024.

cTrader, TradingView and proprietary platforms — the alternatives

MT4 and MT5 are not the only options. cTrader (Spotware) is preferred by ECN brokers such as IC Markets, Pepperstone, Tickmill — for transparent depth of market, high-quality execution reports and cAlgo, a C#-based programming language much more modern than MQL. TradingView (browser-based) has the best technical-analysis tooling in the industry and connects to most brokers for manual trading via TradingView Brokerage Integration. Premium broker proprietary platforms (Saxo SaxoTraderGO, IG Web Platform) tend to be more stable than MT4/5 but lack an ecosystem of community indicators and EAs.

In 2026 the industry standard for a mid-range retail client remains MT5. For an advanced ECN scalper cTrader is often the better choice. For a technical analyst — TradingView with a broker that accepts its API. The choice is stylistic, not binary — and each of these choices is correct in the appropriate context.

What to do tomorrow

1. Check which platform your broker actually offers. Open the client portal and look in the "Platforms" or "Downloads" section for the list of available clients. If your broker offers only MT4 in 2026, that is a signal to consider switching brokers (see the broker selection checklist). If both MT4 and MT5 are available — pick MT5.
2. Open an MT5 demo account today. No matter what you currently use, register a demo account on MT5 and spend at least three sessions on it. After fifteen minutes you find your way around the new interface; after three sessions it is more comfortable than MT4 — mainly thanks to the built-in macro calendar and the single-screen DOM.
3. If you run an MQL4 EA, estimate the port cost. Contact two developers on MQL5.com and ask for a quote for porting your specific EA. A typical cost is 200-500 EUR for an EA up to 1,000 lines of code. Decision rule: port if the EA produces more than 100 EUR per month; drop the EA otherwise.
4. Pick the account model when opening MT5. For most retail clients in the EU, hedging is preferred — it gives more strategic flexibility with no regulatory downside. Choose netting only if you plan to use a US broker or trade mostly futures, where netting is standard.
5. Add an annual platform review date to your calendar. Every twelve months check whether your platform is still actively supported by the broker and whether MetaQuotes (or Spotware for cTrader) is shipping security updates. A platform without updates is a long-term security risk to the account.