---
title: "Bitfinex"
description: "This page explains the default security-level models and markets of the BitfinexBrokerageModel."
canonical: https://www.quantconnect.com/docs/v2/writing-algorithms/reality-modeling/brokerages/supported-models/bitfinex
markdown: https://www.quantconnect.com/docs/v2/writing-algorithms/reality-modeling/brokerages/supported-models/bitfinex.md
language: python
source: https://github.com/QuantConnect/Documentation/tree/master/03%20Writing%20Algorithms/24%20Reality%20Modeling/05%20Brokerages/02%20Supported%20Models/15%20Bitfinex
modified: 2026-10-29
index: https://www.quantconnect.com/llms.txt
---

# Bitfinex

[Documentation](https://www.quantconnect.com/docs/v2.md) > [Writing Algorithms](https://www.quantconnect.com/docs/v2/writing-algorithms.md) > Reality Modeling > Brokerages > [Supported Models](https://www.quantconnect.com/docs/v2/writing-algorithms/reality-modeling/brokerages/supported-models.md) > Bitfinex

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

## Introduction

This page explains the `BitfinexBrokerageModel`, including the asset classes it supports, its default [security-level models](https://www.quantconnect.com/docs/v2/writing-algorithms/reality-modeling/key-concepts.md#02-Security-Level-Models), and its default markets.

```python
self.set_brokerage_model(BrokerageName.BITFINEX, AccountType.CASH)
self.set_brokerage_model(BrokerageName.BITFINEX, AccountType.MARGIN)
```

For more information about this model, see the [class reference](https://www.lean.io/docs/v2/lean-engine/class-reference/py/QuantConnect/Brokerages/BitfinexBrokerageModel/) and [implementation](https://github.com/QuantConnect/Lean/blob/master/Common/Brokerages/BitfinexBrokerageModel.cs).

## Asset Classes

The `BitfinexBrokerageModel` supports trading [Crypto](https://www.quantconnect.com/docs/v2/writing-algorithms/securities/asset-classes/crypto.md).

## Orders

The `BitfinexBrokerageModel` supports several order types, order properties, and order updates.

### Order Types

The following table describes the available order types for each asset class that the `BitfinexBrokerageModel` supports:

| Order Type | Crypto |
| --- | --- |
| [Market](https://www.quantconnect.com/docs/v2/writing-algorithms/trading-and-orders/order-types/market-orders.md) | ![green check](https://cdn.quantconnect.com/i/tu/check.png) |
| [Limit](https://www.quantconnect.com/docs/v2/writing-algorithms/trading-and-orders/order-types/limit-orders.md) | ![green check](https://cdn.quantconnect.com/i/tu/check.png) |
| [Stop market](https://www.quantconnect.com/docs/v2/writing-algorithms/trading-and-orders/order-types/stop-market-orders.md) | ![green check](https://cdn.quantconnect.com/i/tu/check.png) |
| [Stop limit](https://www.quantconnect.com/docs/v2/writing-algorithms/trading-and-orders/order-types/stop-limit-orders.md) | ![green check](https://cdn.quantconnect.com/i/tu/check.png) |

### Order Properties

The `BitfinexBrokerageModel` supports custom order properties. The following table describes the members of the `BitfinexOrderProperties` object that you can set to customize order execution:

| Property | Data Type | Description | Default Value |
| --- | --- | --- | --- |
| `time_in_force` | `TimeInForce` | A [TimeInForce](https://www.quantconnect.com/docs/v2/writing-algorithms/trading-and-orders/order-properties.md#03-Time-In-Force) instruction to apply to the order. The following instructions are supported: `DAY` `GOOD_TIL_CANCELED` `good_til_date` | `TimeInForce.GOOD_TIL_CANCELED` |
| `hidden` | `bool` | A flag to signal that the order should be hidden. Hidden orders do not appear in the order book, so they do not influence other market participants. Hidden orders incur the taker fee. |  |
| `post_only` | `bool` | A flag to signal that the order must only add liquidity to the order book and not take liquidity from the order book. If part of the order results in taking liquidity rather than providing liquidity, the order is rejected without any part of it being filled. |  |

```python
def initialize(self) -> None:
    # Set the default order properties
    self.default_order_properties = BitfinexOrderProperties()
    self.default_order_properties.time_in_force = TimeInForce.GOOD_TIL_CANCELED
    self.default_order_properties.hidden = False
    self.default_order_properties.post_only = False

def on_data(self, slice: Slice) -> None:
    # Use default order order properties
    self.limit_order(self._symbol, quantity, limit_price)

    # Override the default order properties
    order_properties = BitfinexOrderProperties()
    order_properties.time_in_force = TimeInForce.DAY
    order_properties.hidden = True
    order_properties.post_only = False
    self.limit_order(self._symbol, quantity, limit_price, order_properties=order_properties)

    order_properties.time_in_force = TimeInForce.good_til_date(datetime(year, month, day))
    order_properties.hidden = False
    order_properties.post_only = True
    self.limit_order(self._symbol, quantity, limit_price, order_properties=order_properties)
```

### Updates

The `BitfinexBrokerageModel` supports [order updates](https://www.quantconnect.com/docs/v2/writing-algorithms/trading-and-orders/order-management/order-tickets.md#04-Update-Orders).

## Fills

The `BitfinexBrokerageModel` uses the [ImmediateFillModel](https://www.quantconnect.com/docs/v2/writing-algorithms/reality-modeling/trade-fills/supported-models/immediate-model.md).

## Slippage

The `BitfinexBrokerageModel` uses the [NullSlippageModel](https://www.quantconnect.com/docs/v2/writing-algorithms/reality-modeling/slippage/supported-models.md#02-Null-Model).

## Fees

The `BitfinexBrokerageModel` uses the [BitfinexFeeModel](https://www.quantconnect.com/docs/v2/writing-algorithms/reality-modeling/transaction-fees/supported-models.md#07-Bitfinex-Model) with the default argument values that models the current Bitfinex fee schedule.

## Buying Power

The `BitfinexBrokerageModel` uses the `CashBuyingPowerModel` for cash accounts and the `SecurityMarginModel` for margin accounts.

If you have a margin account, the `BitfinexBrokerageModel` allows 3.3x leverage.

## Settlement

The `BitfinexBrokerageModel` uses the [ImmediateSettlementModel](https://www.quantconnect.com/docs/v2/writing-algorithms/reality-modeling/settlement/supported-models.md#02-Immediate-Model).

## Margin Interest Rate

The `BitfinexBrokerageModel` uses the [NullMarginInterestRateModel](https://www.quantconnect.com/docs/v2/writing-algorithms/reality-modeling/margin-interest-rate/supported-models.md#02-Null-Model).

## Default Markets

The default market of the `BitfinexBrokerageModel` is `Market.BITFINEX`.

## Account Currency

The `BitfinexBrokerageModel` doesn't set a default currency. To change the algorithm's currency from USD to a different currency, see [Set Account Currency](https://www.quantconnect.com/docs/v2/writing-algorithms/initialization.md#03-Set-Account-Currency).