MT4 vs MT5 for Brokers: Technology, Operations and Back-Office Implications in 2026
The MT4 vs MT5 for brokers debate is no longer about features or trader preference. It is a business continuity and operational efficiency question. MT4 still runs across a significant portion of global brokerage infrastructure, but its underlying architecture is ageing, its vendor has stopped issuing new licenses, and the cost of running it manually is compounding quietly.