What is server latency?

What it is

Server latency is the time it takes for data to travel from your server to your broker's server and back. In trading, it is measured in milliseconds. When your Expert Advisor places a trade, the instruction must travel from your VPS to your broker's matching engine. The longer that journey takes, the more time passes between your EA deciding to trade and the trade actually being executed.

Latency is also called ping — the same metric you see in online gaming. Lower is better.

How it works

Every trade your EA places follows this journey:

1. EA generates a buy or sell order on your VPS
2. Order travels over the internet from your VPS to your broker's server
3. Broker's server processes the order and executes it
4. Confirmation travels back to your VPS
5. MetaTrader records the executed trade

The round-trip time for this journey — from order sent to confirmation received — is your latency. On a well-positioned VPS this is typically 1–5 milliseconds. On a poorly positioned server or a home internet connection, it can be 50–200ms or more.

Why location matters

Data travels at roughly two-thirds the speed of light through fibre optic cables — fast, but not instantaneous. The physical distance between your server and your broker's server directly determines the minimum possible latency. A VPS in London connecting to an IC Markets server in London will always have lower latency than the same VPS connecting to an IC Markets server in Sydney.

Why it matters for EA trading

For most EA strategies — trend following, swing trading, grid trading — latency differences of 5–50ms make little practical difference. The market conditions that trigger entry are not time-sensitive to that degree.

For high-frequency or scalping strategies that target 2–5 pip profits, latency becomes critically important. A 20ms delay in execution can mean the difference between filling at the target price and filling 2–3 pips worse — eliminating the entire profit target on a given trade.

Common misconceptions

• Lower latency doesn't make a bad strategy profitable. If the strategy's edge doesn't exist, faster execution just loses money faster. Latency matters when you already have an edge — it maximises how much of that edge you capture.
• Your home internet connection is not fast enough for serious EA trading. Domestic broadband introduces variable latency, suffers from outages, and can drop connections during adverse weather or network congestion. A professional VPS has multiple redundant connections that provide consistently low, stable latency.

More in VPS & Infrastructure →

Written and reviewed by the Karnek Research team. Last updated August 2026.

Educational content only - not financial advice. Past performance does not predict future results. Trading carries significant risk.