> For the complete documentation index, see [llms.txt](https://docs.notional.finance/v3-technical-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.notional.finance/v3-technical-docs/contract-interaction-guides/trading-guide/enter-leveraged-vaults.md).

# Enter Leveraged Vaults

## Enter Leveraged Vault

Notional users can use the `enterVault` method to initiate or update a vault position: 

```
def get_deposit_params(minPoolClaim=0, trade=bytes()):
    return eth_abi.encode_abi(
        ['(uint256, bytes)'],
        [[minPoolClaim, trade]]
        )

depositParams = get_deposit_params()

# Enter a vault by depositing 10 USDC, borrowing 20 fUSDC from Notional in the December 18, 2023 (1702944000) maturity with a max borrow interest rate limit of 5%.
notional.enterVault(account.address, vaultAddress, 10e6, 1702944000, 25e8, 0.05 * 1e9, depositParams, {'from':account})
```

A user can enter a vault at a specific leverage ratio by selecting the amount of Prime Cash he borrows and the deposit amount.