Direct answer: what “No Dealing Desk” is and how it differs
“No Dealing Desk” (often shortened to NDD) is an execution concept used in forex to describe how orders are handled between the moment you request a trade and the moment it is filled. The core idea is that the provider does not act as the counterparty in the same way as a model that internalizes trades. Instead, the provider typically routes orders to external liquidity sources or an execution system so that fills are determined by those sources and prevailing market conditions.
The main difference versus related concepts is not the label itself, but where the order can end up and what entity is on the other side of the trade for execution. In practice, traders and readers often compare NDD to labels such as “market maker,” “straight-through processing,” and “STP,” and sometimes “electronic communications network” routing. While these terms overlap in how they are used, they point to different operational choices—especially whether the provider internalizes flow and how execution is carried out.
Mechanism and definitions: the moving parts to compare
Forex execution models can be understood by separating stable mechanics from variable conditions.
1) Counterparty handling (who matches the order)
- No Dealing Desk (NDD): The provider’s execution role is presented as routing outward rather than taking the other side in the provider-controlled manner typical of market making. The order’s fill outcome depends on external liquidity and the provider’s routing/execution implementation.
- Market maker: The provider is positioned as the counterparty for many trades. That means pricing and execution behavior can be influenced by the provider’s internal inventory and quoting process.
2) Order path (how the request is processed)
- NDD: Typically associated with routing to external venues or liquidity pools. Exact pathways differ by provider and can include partial fills.
- STP (Straight-Through Processing): Often used to mean automation with fewer internal handoffs. STP is more about process automation than about whether the provider is internalizing as a counterparty. A system can be “automated” and still have different economic exposure depending on the underlying counterparty model.
- ECN (Electronic Communications Network) / ECN-like routing: Often indicates that orders interact with other participants via an electronic venue. This is a venue concept; it does not, by itself, guarantee a specific counterparty behavior unless combined with other terms.
3) Pricing and fill determination (what controls the fill)
- NDD vs market maker: Even under NDD, fills can differ from the first displayed quote because execution occurs in time: you submit an order, then liquidity responds. Costs and conditions (spreads, commissions, depth) affect the fill.
- STP vs NDD: STP can reduce manual steps but does not eliminate market risk, latency effects, or the possibility of different available liquidity at the time of execution.
A useful bounded way to explain the differences is: NDD is mainly about counterparty/execution routing intent; STP is mainly about automation of the order path; ECN is mainly about an electronic venue structure. These are different “canonical owners” of meaning, even if marketing language sometimes blends them.
Evidence or example (bounded): how two concepts can lead to different outcomes
Without relying on real-time market data, you can still reason about what can differ.
Example scenario (assumptions stated): Assume: (a) a forex order is submitted with a specified size, (b) there is temporary liquidity thinning, and (c) the provider offers two different execution setups: one presented as NDD routing and one presented as market making.
Step-by-step reasoning:
- Under an NDD routing approach, the order is sent outward. If external liquidity at the requested price is limited or shifting, the fill may occur at a less favorable available level, or the order may be partially filled.
- Under a market-making approach, the provider may quote and manage execution using its own internal mechanism. If internal quoting widens, the effective cost can increase. Alternatively, if the provider chooses to hold or reprice execution, realized results can also diverge.
Material limitation highlighted: Even if two providers both claim “no dealing desk” language, the realized behavior can still vary because of implementation details: routing rules, how spreads and commissions are presented, whether partial fills are allowed, and how quickly the provider reacts when liquidity changes.
Limitations and risks: what “No Dealing Desk” does not automatically solve
“No Dealing Desk” is often discussed as if it resolves conflicts of interest, but as a reader you should treat it as an operational description with limits.
Material limitation / failure mode #1: model label does not remove execution uncertainty Market conditions can change between quote and fill. That means slippage and variable effective execution can occur under any routing or counterparty setup. The label alone does not guarantee the same result for identical orders.
Failure mode #2: costs may be structured differently A provider may use spreads and commissions in different ways. Even if the “execution model” changes, the total trading cost can still vary based on the provider’s fee structure and market conditions at the time of execution.
Failure mode #3: partial fills and order handling Routing systems can lead to partial fills across liquidity sources. That changes the realized average price and can affect how you interpret performance versus what you expected from a single displayed quote.
Failure mode #4: jurisdiction and terms affect outcomes Because terms and execution policies can vary, the same label may have different practical meanings. A stable concept is “counterparty/execution handling intent,” but exact mechanics depend on the provider’s documented execution policy and legal terms.
Verification and next question: how to confirm the difference for a specific case
Because model labels are not standardized in a universal way, verification should focus on what you can independently check.
- Read the provider’s execution policy and related terms to see whether orders are routed externally, how the provider describes counterparty handling, and how it treats partial fills.
- Check how costs are represented (spread vs commission) and whether the terms define how execution prices are determined.
- Clarify process claims like STP by looking for descriptions of order handling steps (automation, routing, and any manual intervention).
Next question to ask: “In the provider’s documented terms, what is the actual order path and counterparty relationship, and how does it describe potential slippage, partial fills, and execution price formation?”