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Broker Fee Comparison

Commission-free is rarely free. Put up to three brokers side by side with their commission, per-unit fees and typical spread to see what each one really costs over a month and a year.

Your activity

One trade is a round trip: in and out.
$0.01 per share for stocks; a futures tick value; pip value per unit for forex.

Broker 1

Paid once per round trip.

Broker 2

Paid once per round trip.

Broker 3

Paid once per round trip.

Cost comparison

Trading cost per trade, per month and per year by broker
BrokerCommissionPer-unit feesSpread costPer tradePer monthPer year
Broker A$0.00$0.50$1.00$1.50$60.00$720.00
Broker B$4.95$0.00$1.00$5.95$238.00$2,856.00
Broker C$0.00$0.00$2.00$2.00$80.00$960.00

Cheapest for these numbers: Broker A. Spread is usually the biggest line; the quoted commission rarely is.

Every input is in the URL, so anyone opening this link sees the same numbers.
Slippage on a market orderA buy order clears four price levels, so the average price paid is worse than the price first quoted.Buy 1,000 shares at marketpricesell orders resting (bar length = size)20.04300 shares20.03200 shares20.01200 shares20.00300 sharesnothing resting at 20.02order sweeps up the bookaverage fill 20.02SLIPPAGE0.02 a share$20.00 in totalintended 20.00Each level fills at its own price; the average is what you really paid.
Slippage on a market order. You click at 20.00, but only 300 shares are resting there, so the rest of the order fills at 20.01, 20.03 and 20.04. The average price paid is 20.02, and that two-cent gap is slippage.
How it's calculated
One trade means one round trip (entry and exit). Regulatory and exchange fees vary by venue; add them to the per-unit fee if they matter to you.
Formulas used by this tool
Unit fees per tradefee per share or contract × average size
Spread cost per tradespread in ticks × tick value × average size, paid once per round trip
Cost per tradecommission + unit fees + spread cost
Monthlycost per trade × trades per month
Yearlymonthly × 12

Educational only, not financial advice. The maths is simple arithmetic on the numbers you enter; it knows nothing about your broker, fees, slippage or the market. Questions about the maths? Ask in the forums.