TradingCalculated
Calculations run privately in your browser
Trading Metrics app

Trading Commission Calculator

Calculate broker fees for flat, percentage or per-share pricing — with minimum and maximum charges — per order, per round trip and per year.

Trading CostsBeginner
Your inputs
Fee model
$
$
Results
Commission per order$9.600.1% of trade value
Trade value$9,600.00
Round trip (buy + sell)$19.20
Break-even move0.2%price change to cover fees
Monthly / yearly$480.00 / $5,760.00
Every round trip has to earn 0.2% just to pay its commissions. For frequent traders, fees are often the single largest drag on returns — compare brokers on the cost of your typical trade, not the headline rate.
Cumulative fees over a year

Not financial advice. Results are estimates based on the values you enter and simplified assumptions; real trades are affected by fees, slippage, gaps and other factors. Trading involves substantial risk of loss. Read the full disclaimer.

How to calculate trading commissions

Flat: Fee = fixed amount per order Percentage: Fee = Trade value × Rate % Per share: Fee = Quantity × Rate Then: Fee = min(max(Fee, Minimum), Maximum) Break-even move = Round-trip fees ÷ Trade value × 100

Worked example

  1. A broker charges a flat $10: buying 1 share or 1,000 shares costs $10 each way.
  2. A crypto exchange charges 0.1%: buying $10,000 of Bitcoin costs $10.
  3. Round trip $20 on $10,000 → price has to move 0.2% just to cover fees.

How to interpret trading commissions

The break-even move is the number to watch: if your typical target is 1%, a 0.2% round-trip cost takes a fifth of every winner. Add your spread with the spread cost calculator and include all costs in your trade results with the profit & loss calculator.

Limitations and common mistakes

  • Flat fees punish small orders; percentage fees punish large ones — choose the model that fits your trade size.
  • Exchange, regulatory and currency conversion fees often come on top of the advertised commission.
Trading Costs

Spread Cost Calculator

Turn a bid-ask spread into money per trade, pips and monthly cost.

EUR/USD 0.8 pips × 1 lot → $8
Trading Costs

Slippage Calculator

Measure the difference between expected and filled price in %, basis points and money.

Expected 100 · filled 100.18 → 0.18% ($90)
Performance & Returns

Trading Profit & Loss Calculator

Calculate gross and net P/L for long or short trades, including fees, funding and break-even price.

Long 10 @ 100 → exit 110 = +$100

Commission calculator FAQ

Are commissions charged on both buy and sell?

Usually yes — that's why the calculator shows the round-trip cost.

What about maker and taker fees?

Run the calculation once with each rate: maker for limit orders that add liquidity, taker for market orders.