How betting exchange commission works and affects your P&L

Betting exchange commission reduces the profit you keep from a winning market. Under a net-market-winnings model, you first combine the results of your bets within that market. Commission applies to a positive total, rather than to every winning bet separately.

This guide explains that model and its effect on P&L. It does not state Orbit Exchange’s commission rate. If you access Orbit through a broker, check your own rate and charging terms with that broker or exchange before using any calculation.

What “net winnings on a market” means

A market is a particular betting proposition, such as the match winner. Other propositions on the same event can be separate markets. Grouping by match name alone can therefore combine results that are not combined for commission.

As a documented example of the model, Betfair’s commission explanation says it charges on net market winnings. Its terms do not establish your broker’s rate or every exchange’s charging method. Confirm the arrangement that applies to your account.

For the model used here, commission = max(net market winnings, 0) × commission rate. The market result after commission equals net market winnings minus that charge. This formula covers ordinary winnings commission only; separately disclosed account or funding charges need their own entries.

A worked example: assumed 5% commission

Hypothetical example only. The assumed rate is 5%, not a stated Orbit rate. Imagine several settled positions in one market. Their combined gross profits are €80 and their combined losses are €30. Net market winnings before commission are €50.

Charging 5% of €80 would give €4 and would be wrong for this model. So would charging commission on the total stakes returned. Commission is a cost of the positive net market result, not a percentage of every amount credited to the wallet.

Separate markets stay separate

Hypothetical example with the same assumed 5% rate: market A produces €100 gross profit and market B produces a €100 loss. Market A costs €5 in commission. Market B costs zero in ordinary winnings commission. Your total result is −€5.

The combined gross result is zero, but that does not remove the charge on market A. Calculating one percentage of a whole day’s net result can therefore understate commission. Calculate at the relevant market level, then total the results.

Stake, return and profit are different

Hypothetical example: a €100 back bet at odds of 1.20 wins, and it is your only position in the market. Its gross return is €120. That is €100 returned stake plus €20 gross profit. At the assumed 5% commission, the charge is €1 and net profit is €19.

If the bet loses, the loss is €100, with no ordinary winnings commission under this model. The fee reduces the upside without reducing that downside. This is why a calculation based only on advertised odds slightly overstates the payout you keep.

For a lay bet, distinguish lay stake from liability too. A winning lay position earns the lay stake before commission; a losing one pays its liability. The balance and exposure guide explains that distinction.

How commission changes break-even odds

For one back bet per market, with the same decimal odds and commission rate each time, net profit per unit staked on a win is (odds − 1) × (1 − rate). A loss costs one unit. The break-even win probability is 1 ÷ [1 + (odds − 1) × (1 − rate)].

Hypothetical example: at odds of 1.20 and the assumed 5% rate, a winning unit earns 0.19 units. Break-even is 1 ÷ 1.19, approximately 84.03%. Without commission it is 1 ÷ 1.20, approximately 83.33%. These are mathematical thresholds, not forecasts of your win rate.

The simple formula needs adjustment when several positions share a market and offset each other. Do not apply commission to each profitable bet, then also deduct the market charge. For more on win rates and uneven payouts, read the low-odds betting maths guide.

Read the statement before subtracting fees

A statement may show gross settlement and commission on separate lines, or present a net result. Read the field definitions and reconcile an actual market. A column called “profit” is not enough to establish whether the charge has already been deducted.

Keep market identifiers, settlement times, gross results, commission and final net results in your record. If the ledger posts an adjustment later, retain that entry rather than silently changing the original result. This helps explain differences between a session total and a later statement.

When your current balance already reflects commission, subtracting the same fee again from your balance-based profit calculation double-counts it. The real-profit guide separates balance reconciliation from the breakdown of betting costs.

Confirm your actual charging arrangement

Ask your broker or exchange what rate applies to your account, what it applies to, when it is deducted and whether other charges are separate. If terms vary by market or account, preserve the applicable information with your records. Do not substitute another customer’s screenshot for your own terms.

Use net results when reviewing performance, and keep fees visible as a separate explanation of the difference from gross results. Account for the full possible loss when choosing stakes; the bankroll guide shows why a small expected gain does not justify a large liability.

Frequently asked questions

Is commission charged on my returned stake?

Under the net-market-winnings model described here, no. The returned stake is not profit. Commission applies to the positive net result of the market.

Do losing markets pay commission?

They do not pay ordinary winnings commission under this model. Other account or funding charges are separate, so check your own terms rather than assuming every possible fee is covered here.

Is 5% Orbit Exchange’s commission rate?

No rate for Orbit is stated here. The 5% rate is an assumed number used only for worked examples. Check your actual rate and charging terms with your broker or exchange.

Why is my daily result negative when gross P&L is zero?

Winning markets can incur commission even if losses in separate markets offset their gross profit. Sum the after-commission results of each market to calculate the daily net result.