The moment usually hits mid-trade. Price is sitting right at your limit order, the chart shows a clear fill, yet nothing happens — or worse, you get a requote at a worse price. Most traders blame their platform, their internet connection, or bad luck. Then someone mentions the dealing desk, and suddenly a fifteen-minute rabbit hole begins.

A dealing desk — sometimes called a DD broker — is a brokerage model where the broker itself acts as the counterparty to your trade. When you buy, the broker sells to you directly from its own book, rather than routing your order to an external liquidity provider or exchange. The broker is, in plain terms, taking the other side of your position.

CONCEPTA dealing desk broker internalises your order — they become your counterparty, not a pass-through to the wider market.
WARNINGWhen your broker profits if you lose, requotes and slippage during volatile moves deserve closer scrutiny.
KEY IDEANDD brokers route orders externally — tighter spreads are possible, but commissions and minimum sizes often apply.

The alternative is a No Dealing Desk (NDD) model. Here the broker routes your order directly to banks, liquidity pools, or an ECN — an Electronic Communications Network, which is essentially a digital marketplace matching buyers and sellers automatically. Your broker earns a commission or a small markup rather than profiting from your loss. The conflict of interest is structurally removed, though not every NDD broker is created equal.

TRADER DEALING DESK DD Broker book NDD / ECN NDD Liquidity pool Dealing Desk (DD) No Dealing Desk (NDD)

Here is where real numbers clarify things. Say you place a buy order on AUD/USD at 0.6500. A DD broker quotes you a spread of 2 pips — you enter at 0.6502. An ECN broker charges 0.5 pips spread plus a $3.50 commission per standard lot. On a single trade, the ECN is cheaper. On ten trades, that spread difference compounds to a meaningful figure that active traders absolutely notice in their net P&L over a month.

Knowing your broker's model helps you interpret your fills accurately. Requotes from a DD broker during a news spike occur because the broker is managing its own book risk — not necessarily acting in bad faith, but the incentives differ from an NDD model. Regulatory disclosure requirements in Australia (via ASIC) mean brokers must state their execution model in their Product Disclosure Statement. Reading that document carefully is worth far more than any indicator setting. Deeper background on order routing is covered on Investopedia's dealing desk page, while the mechanics of electronic matching are explained well on Wikipedia's ECN article. The broader concept of market makers — which DD brokers functionally resemble — is covered at Investopedia's market maker explainer.

Your broker's business model is part of your trading infrastructure — ignore it and you are optimising your entries while ignoring the pipe your orders travel through.

This content is for educational purposes only and does not constitute financial product advice. Past performance is not indicative of future results. Profit Logic Ltd (ACN 688 669 936) accepts no responsibility for errors or omissions in this content or anywhere on this website. Always seek advice from a licensed financial adviser before making investment decisions.