The Fees Impact tile sums commission + swap across every trade in the selected period and surfaces three numbers: total fees paid, fees as a share of gross P&L, and average fee per trade. Commissions are the broker's per-trade cost; swaps are the overnight financing charge (positive on long carries, negative on short carries — TradeOnyx aggregates the signed total so a net credit can also surface).
How to read the impact percentage: - Below 5% of gross — fees are background noise; not a strategy lever. - 5% to 15% — meaningful drag. A 10% fee share means every tenth euro of profit goes to the broker instead of your account. - 15% to 30% — flashing yellow. Either you're trading very small size (where flat fees crush the math) or you're over-trading a low-edge strategy. - Above 30% — red. The fee column is eating the strategy. Either widen the targets, reduce trade frequency, or renegotiate the broker plan.
Average-fee-per-trade is the partner number. If you trade 200×/month at €5 per trade, you pay €1000 in fees no matter what the strategy returns — that's a fixed overhead you need to clear before you're net profitable.
TradeOnyx pulls the fee numbers from every imported trade automatically — commission and swap are columns on the Trade model, so CSV imports, broker-API connectors, and manual entries all feed the same tile. Use the period filter to compare your fee drag this month versus last quarter: a fee share that climbs while strategy returns stay flat is the early warning that you started over-trading without noticing. Pair the tile with the Trades tab's per-symbol grouping to see which instrument is the biggest fee contributor.