> ## Documentation Index
> Fetch the complete documentation index at: https://base-a060aa97-roethke-b20-upgrade-pages.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# IB20.allowance

> Generated B20 reference for allowance(address,address).

## Signature

```solidity IB20.sol theme={null}
function allowance(address owner, address spender) external view returns (uint256);
```

| Field | Value |
| - | - |
| Selector | `0xdd62ed3e` |
| Canonical signature | `allowance(address,address)` |

## Description

Allowance granted by `owner` to `spender`.

## Parameters

| Parameter | Description |
| - | - |
| `owner` | Allowance owner. |
| `spender` | Allowance spender. |

## Returns

Current allowance.

## Access Control

Read-only or ERC-20-standard access rules unless the NatSpec states otherwise.

## Policy Interaction

No direct policy interaction.

## Example

```solidity Usage Example theme={null}
IB20(target).allowance(owner, spender);
```