---
title: "Modeling Fee Structures"
canonical: https://www.quantconnect.com/docs/v2/lean-engine/contributions/brokerages/modeling-fee-structures
markdown: https://www.quantconnect.com/docs/v2/lean-engine/contributions/brokerages/modeling-fee-structures.md
language: python
source: https://github.com/QuantConnect/Documentation/tree/master/06%20LEAN%20Engine/02%20Contributions/02%20Brokerages/09%20Modeling%20Fee%20Structures
modified: 2026-10-29
index: https://www.quantconnect.com/llms.txt
---

# Modeling Fee Structures

[Documentation](https://www.quantconnect.com/docs/v2.md) > [LEAN Engine](https://www.quantconnect.com/docs/v2/lean-engine.md) > Contributions > [Brokerages](https://www.quantconnect.com/docs/v2/lean-engine/contributions/brokerages.md) > Modeling Fee Structures

> Code examples are shown in Python. Append `?lang=csharp` to this URL for the C# version of this page.

## Introduction

This brokerage development guide is still under construction.