OPEN-SOURCE SCRIPT
Estimate exchange/broker fee commission from trade volume
This script is used to estimate how much an exchange/broker makes off a particular pair/symbol. If Coinbase(GDAX) has a 0.25% taker fee and a 0.15% maker fee per trade and you estimate the average commission fee at 0.19% then you simple input that, and how many periods you'd like to know the total fee for (30 periods on the 1 day chart = last 30 days, 28 periods on 4 hour chart = last 7 days, etc).
This is for broad estimates of a single pair and only works well on exchanges that show only the volume on that exchange (stock markets may be less useful for this tool).
THIS TOOL IS TO PROVIDE A BROAD ESTIMATE, NOT AN EXACT FIGURE!
// percentage fee rate is entered as a percent: 3.5=3.5%, not 350%.
// pbtc, the one for calculating the USD value of fees that are in bitcoin, uses the price at time fees were realized. IE chart is on
// 1 day interval and XBARFEE is set at 4, then PBTC gives the USD value as if the exchange sold all btc at the end of each day for
// 4 days. i.e.:
// Day 1: BTCUSD= $5000 fees=1.5, Day 2: BTCUSD = $5000 fees=3.0, Day 3 BTCUSD = $10,000 fees=1.0, Day 4 BTCUSD = $20,000 fees=1.0
// PBTC would NOT show (1.5+ 3 + 1 + 1) = 6.5 * 20k = $130,000. It would do: (1.5*5000)+(3*5000)... = $52,500.
This is for broad estimates of a single pair and only works well on exchanges that show only the volume on that exchange (stock markets may be less useful for this tool).
THIS TOOL IS TO PROVIDE A BROAD ESTIMATE, NOT AN EXACT FIGURE!
// percentage fee rate is entered as a percent: 3.5=3.5%, not 350%.
// pbtc, the one for calculating the USD value of fees that are in bitcoin, uses the price at time fees were realized. IE chart is on
// 1 day interval and XBARFEE is set at 4, then PBTC gives the USD value as if the exchange sold all btc at the end of each day for
// 4 days. i.e.:
// Day 1: BTCUSD= $5000 fees=1.5, Day 2: BTCUSD = $5000 fees=3.0, Day 3 BTCUSD = $10,000 fees=1.0, Day 4 BTCUSD = $20,000 fees=1.0
// PBTC would NOT show (1.5+ 3 + 1 + 1) = 6.5 * 20k = $130,000. It would do: (1.5*5000)+(3*5000)... = $52,500.
Open-source script
In true TradingView spirit, the author of this script has published it open-source, so traders can understand and verify it. Cheers to the author! You may use it for free, but reuse of this code in publication is governed by House rules. You can favorite it to use it on a chart.
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