> ## Documentation Index
> Fetch the complete documentation index at: https://docs.exponent.finance/llms.txt
> Use this file to discover all available pages before exploring further.

# Collect Interest

> Collect accrued interest from open orders

The `ixWrapperCollectInterest` instruction collects accrued interest from YT held in open orders, as well as held from filled orders on the Exponent orderbook.

## Usage

```typescript theme={null}
import { PublicKey } from "@solana/web3.js";

const ix = await orderbook.ixWrapperCollectInterest({
  trader: wallet.publicKey,
  mintSy: syMintAddress,
});
```

## Required Parameters

| Parameter | Type        | Description                    |
| --------- | ----------- | ------------------------------ |
| `trader`  | `PublicKey` | The trader's wallet public key |
| `mintSy`  | `PublicKey` | The SY token mint address      |

## Optional Parameters

| Parameter         | Type        | Description                       |
| ----------------- | ----------- | --------------------------------- |
| `sySrc`           | `PublicKey` | SY token source account           |
| `tokenBaseTrader` | `PublicKey` | Base token account for the trader |

## Returns

Returns a `TransactionInstruction` that collects accrued interest and transfers it to the trader's SY token account.

## How It Works

YT held in open orders continuously accrues yield. Interest is **staged automatically** during order fills and removals — you don't need to trigger staging manually. This instruction transfers the staged SY from your escrow to your token account.

Staged interest is tracked separately from your trading balances (PT, YT, SY). To withdraw trading balances, use [ixWrapperWithdrawFunds](/developer-orderbook/typescript/instructions/ix-wrapper-withdraw-funds).