Brokerage Commission Calculator 2026 — Trade Costs

A standard stock commission on the Warsaw Stock Exchange (2026) is roughly 0.29–0.39% of the transaction value, with a minimum of PLN 3–5 per order. Specialised brokerage houses are often cheaper than bank accounts, and rates may be negotiated for high turnover.

The minimum commission is the lowest amount charged per order, regardless of its value. When the percentage commission falls below the minimum (e.g. 0.39% of PLN 500 = PLN 1.95 with a PLN 5 minimum), the broker charges the minimum. This makes small trades proportionally more expensive.

The round-trip cost is the total commission for a full cycle: buying and later selling shares. Since commission is paid on both transactions, the real cost of entering and exiting a position is twice the single commission.

Commissions reduce profit and raise the break-even threshold. On a PLN 10,000 trade at 0.39%, the round-trip cost is about PLN 78, so the price must rise by more than 0.78% to break even. Frequent trading lets commissions consume much of the profit.

Yes. Commissions paid on buying and selling shares are deductible costs that reduce the base for the Belka capital-gains tax (19%). The brokerage house includes them in the PIT-8C form.

Choose a broker with a lower rate and low minimum, combine small orders into larger trades, use promotions and avoid overtrading. With a long-term buy-and-hold strategy the impact of commissions is marginal.

For most brokers the rate and minimum are identical on buying and selling, so the calculator assumes symmetry. Some brokerage houses use different tariffs, however — check the current fee schedule.

The commission for an ETF on the WSE is usually the same as for stocks (0.29–0.39%). Foreign ETFs may have different rates plus currency-conversion costs. Some brokers offer selected ETFs with no commission in regular-investing plans.

The effective commission is the round-trip cost expressed as a percentage of the transaction value. It shows the real burden of broker costs — for small trades it rises sharply because of the minimum commission.

No. The calculator computes only transaction costs. The capital-gains tax (Belka, 19%) is charged separately on realised profit. For net profit use the stock profit calculator.