What is Round Turn Commission?
Round Turn Commission is a commission charged for a complete trade cycle—meaning one cost for opening a position and another side for closing it. In forex discussions, “round turn” is often used to describe a commission that applies to the full life of a trade rather than only the opening leg.
Because providers can label fees differently, treat “round turn” as a cost concept tied to the provider’s fee schedule: you should check how the provider defines the commission unit (for example, per lot, per unit of trade size, or per notional value) and whether the stated number already includes both entry and exit.
How does Round Turn Commission work in forex?
A typical way to think about it is:
- Open (entry): you buy or sell and a position is created.
- Close (exit): you later close that position, returning to no open exposure.
- Round turn: the commission is charged for that whole open-and-close sequence.
Inputs that affect the cost
To estimate the impact of round turn commission (without assuming live prices), you need at least these stable inputs:
- Trade size (often measured in lots or another unit).
- Commission rate as defined by the provider.
- Whether the rate is truly “round turn” or whether it is listed separately for open and close.
Simple example with stated assumptions
Assume (for calculation only) a provider has a commission schedule stated as: “X per lot, round turn.” If you trade 1 lot and later close the position, then you would pay X for the round turn. If you instead opened and closed two separate trades of 1 lot each, you would pay 2 × X, because there are two open-and-close cycles.
If a provider states a commission as “Y per lot per side,” then the cost for one complete round trip would be 2 × Y (entry plus exit). This is why confirming the label matters.
Evidence or example: separating stable mechanics from variable factors
Commission mechanics are relatively stable: round turn generally refers to the two legs of a trade. What varies is how providers price it and what else is charged around the same trade. Even when commission is unchanged, your total cost can still change because of:
- Other fees the provider applies (for example, data, inactivity, or account fees), depending on jurisdiction and account type.
- Execution quality and timing, which can change the effective transaction cost.
- Spreads (the difference between the buy and sell price), which may be more significant than commission for smaller trades.
A practical way to verify the meaning is to compare the provider’s fee schedule wording with a scenario you understand (one open and one close) and to check whether the commission shown matches one full cycle or only half of it.
Limitations and risks: where misunderstandings happen
The main limitation is that “round turn commission” can be interpreted incorrectly if the provider’s documentation is ambiguous or if different account types use different fee bases. Common failure modes include:
- Double-counting or under-counting because you assume “round turn” but the fee is actually “per side.”
- Ignoring other cost components, such as spreads, which can dominate results for some trades.
- Assuming future outcomes from past relationships, since trading costs and execution conditions may differ over time.
There is also uncertainty built into any cost estimate: without knowing the exact commission schedule, trade size, and any additional fees, you can only model the effect using assumptions.
Verification and next question
To independently verify what round turn commission means for a specific forex setup, focus on the provider’s fee schedule and look for the exact wording of the commission unit:
- Is it stated as round turn (covers entry and exit together), or per side (covers entry or exit only)?
- What is the unit of the rate (per lot, per notional, or another measure)?
- Are there any extra fees that apply when trading?
If you want, you can also ask: “How does the provider define commission versus spread for this account type?” This helps distinguish commission structure from other variable costs that affect total trading expense.