MT4 vs MT5: Compare Accounts, Orders and Strategy Testing
Choose between MT4 and MT5 by checking your broker account, required instruments and existing software. Trading forex does not automatically make MT4 the better choice, and installing MT5 does not give an account access to every market the platform can support.
Both platforms are developed by MetaQuotes. They use different trading APIs and executable formats, so an existing MT4 Expert Advisor is a migration consideration rather than a file you can simply run in MT5.
Start with the broker's actual offer
Ask the broker which platform, account type and instruments are available in your jurisdiction. For a stock-like symbol, check whether it represents a share or a derivative such as a CFD. For a futures-like symbol, check the contract, expiry and settlement terms. The platform name alone does not answer those questions.
Before comparing interface features, record minimum order size, contract size, tick value, commission, financing, trading sessions and execution rules for the exact account. These settings affect a strategy more directly than the number of built-in indicators.
Compare the desktop tools
MetaQuotes' platform comparison lists these built-in desktop capabilities:
| Capability | MT4 | MT5 |
|---|---|---|
| Technical indicators | 30 | 38 |
| Graphical objects | 31 | 44 |
| Standard timeframes | 9 | 21 |
| Pending order types | 4 | 6 |
| Programming language | MQL4 | MQL5 |
| Strategy Tester | Single-threaded tester | Multi-currency testing and parallel optimization agents |
These counts do not measure signal quality. An extra timeframe can help express a rule precisely, but it does not establish that the rule predicts prices better. Check the desktop, web or mobile edition you will actually use; they need not expose every feature in the same way.
MT4 does have a Depth of Market interface
MT4's Depth of Market help describes a price ladder and order-management controls. Its existence should not be confused with a consolidated exchange order book. The documentation describes levels constructed from bid, ask, stop-distance and price-step information.
MT5 supports additional market-depth and exchange-data workflows. What a specific account displays depends on its broker and data. Displayed orders also represent available quoted interest, not the identities of traders or all future liquidity. A claim that MT4 has no DOM interface is therefore too broad; compare the actual depth data and controls supplied to each account.
Order types and filling policies
MT4 has buy/sell limit and buy/sell stop pending orders. MT5 also supports buy/sell stop-limit orders. A stop-limit trigger submits a limit order; reaching the trigger does not guarantee the limit order will fill.
MT5 supports several filling policies, including Fill or Kill, Immediate or Cancel and Return. Their availability depends on the symbol and execution mode. Do not assume MT5 will automatically partially fill every oversized order. Inspect the symbol's allowed policies and handle rejected, partial and completed requests separately. MetaQuotes documents those combinations in order properties.
Changing software does not remove spreads, queue position, slippage or broker restrictions. A faster optimization run is also not evidence of faster live execution.
Position accounting changes the meaning of an opposite trade
MT5 supports netting and hedging accounts; the broker sets the account's mode. Under netting, a symbol has one net position. As a simple volume example, an executed sale of 0.5 lots against a long of 1 lot leaves a net long of 0.5 lots, assuming no other transactions. Under hedging, an opposite deal can create a separate position instead.
This distinction matters when porting an EA that expects a sell command to reduce an existing long. Closing a specified position and opening an opposite position are different operations. See MetaQuotes' position-accounting explanation and confirm the mode on the actual account.
MT4's separate-position workflow does not override a broker's or jurisdiction's restrictions. Verify whether the specific account permits the intended hedging behavior.
MQL4 and MQL5 both support structured programming
MQL4 has object-oriented programming support, including classes. It is inaccurate to present object orientation as exclusive to MQL5. The important migration issues are trading APIs, indicator access, event handling and order/deal/position semantics.
For an EA conversion, write a behavior checklist before translating: which bar supplies the signal, whether an unfinished bar is used, how many positions may exist, what closes them, and how failures are retried. Compare recorded signals and orders on matching data after compilation. Similar source text does not establish matching behavior.
The Pineify MQL5 Coding Agent can assist with drafting and revising MQL5 source. Generated code still needs compiler checks, Strategy Tester inspection and demo-account verification. Pine Script output is a separate implementation and does not run directly in MetaTrader.
Evaluate the tester without inventing a speed benchmark
MT5's Strategy Tester documentation describes multi-symbol strategies, real-tick testing, execution-delay settings and independent agents for parallel optimization passes. Parallel passes do not mean every instruction in one EA runs across all processor cores.
To compare a migration, hold the date range, price inputs, order sizing and costs constant as far as the platforms allow. Record the tick-model setting and history coverage. Inspect the first disagreement in trades before comparing aggregate profit. A different result can come from data or execution assumptions rather than the language.
Then separate development from evaluation. A parameter search that chooses the best historical result is not a test of future returns. Retain an unused period and document how many variants were tried.
A practical selection sequence
- Confirm account eligibility and the exact instrument contracts with the broker.
- List indispensable EAs, indicators and source-code access. Estimate the work needed to migrate them.
- Reproduce one complete workflow on demo: place, modify and close an order; inspect the resulting position accounting.
- For automation, compile the EA and inspect a short visual test before running a large optimization.
- Compare ongoing costs and data availability for the accounts actually offered.
An existing, verified MT4 workflow may justify keeping MT4. A requirement for MT5's tester or broker-supported exchange products may justify MT5. Neither conclusion follows merely from trading forex or from a larger feature count.
Frequently asked questions
Can an MT4 EA run directly in MT5?
No. It needs an appropriate MQL5 implementation and separate verification. A conversion must account for the different APIs and trading model, not just rename the file.
Does MT5 always execute faster than MT4?
No platform-wide live-fill guarantee follows from the tester architecture. Measure the relevant account, network, broker and order workflow; simulation speed is a separate measurement.
Does MT5 support hedging?
Yes, where the broker supplies a hedging account. A netting account has different position behavior, so check the configured mode before running an EA.
Can any MetaTrader account connect directly to TradingView?
Do not assume that. Check the broker's TradingView integration and account eligibility. A third-party alert bridge is a separate execution system with its own mappings and failure handling; it is not native compatibility created by installing MetaTrader.