---
title: il
description: OpenBB Terminal Function
---

# il

Tool to calculate Impermanent Loss in a custom liquidity pool. Users can provide percentages increases for two tokens (and their weight in the liquidity pool) and verify the impermanent loss that can occur.

### Usage

```python
il [-a PRICECHANGEA] [-b PRICECHANGEB] [-p PROPORTION] [-v VALUE] [-n]
```

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## Parameters

| Name | Description | Default | Optional | Choices |
| ---- | ----------- | ------- | -------- | ------- |
| priceChangeA | Token A price change in percentage | 0 | True | range(1, 101) |
| priceChangeB | Token B price change in percentage | 100 | True | range(1, 101) |
| proportion | Pool proportion. E.g., 50 means that pool contains 50%% of token A and 50%% of token B, 30 means that pool contains 30%% of token A and 70%% of token B | 50 | True | range(1, 101) |
| value | Initial amount of dollars that user provides to liquidity pool | 1000 | True | None |
| narrative | Flag to show narrative instead of dataframe | False | True | None |

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