# Copyright 2016-present CERN – European Organization for Nuclear Research
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
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from qf_lib.backtesting.execution_handler.commission_models.commission_model import CommissionModel
[docs]class IBCommissionModel(CommissionModel):
"""
Interactive Brokers commission for a transaction.
This is based on the US Fixed pricing, the details of which can be found here:
https://www.interactivebrokers.co.uk/en/index.php?f=1590&p=stocks1
"""
def calculate_commission(self, fill_quantity: float, fill_price: float) -> float:
fill_quantity = abs(fill_quantity)
commission = max(1.0, min(0.005 * fill_quantity, 0.01 * fill_price * fill_quantity))
return commission