> ## Documentation Index
> Fetch the complete documentation index at: https://base-a060aa97-docs-sync-code-change-253bb15.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# IB20.transfer

> Transfers tokens from msg.sender to a destination address, subject to executor, sender, and receiver policy checks.

## Signature

```solidity IB20.sol theme={null}
function transfer(address to, uint256 amount) external returns (bool);
```

| Field               | Value                       |
| ------------------- | --------------------------- |
| Selector            | `0xa9059cbb`                |
| Canonical signature | `transfer(address,uint256)` |

## Description

Transfers `amount` from `msg.sender` to `to`. Emits `Transfer`.

## Parameters

| Parameter | Description          |
| --------- | -------------------- |
| `to`      | Destination address. |
| `amount`  | Amount to transfer.  |

## Returns

Always `true` on success.

## Reverts

* `ContractPaused(TRANSFER)` when `TRANSFER` is paused.
* `InvalidReceiver` when `to == address(0)`.
* `InvalidSender` when `msg.sender == address(0)`.
* `PolicyForbids(TRANSFER_EXECUTOR_POLICY, ...)` when `msg.sender` is not authorized as an executor.
* `PolicyForbids(TRANSFER_SENDER_POLICY, ...)` when `msg.sender` is not authorized as a sender.
* `PolicyForbids(TRANSFER_RECEIVER_POLICY, ...)` when `to` is not authorized.
* `InsufficientBalance` when `msg.sender`'s balance is below `amount`.

## Access Control

Standard ERC-20 caller rules apply. The factory bootstrap bypass suppresses all three policy checks during the creation window; see `IB20Factory.createB20`.

## Policy Interaction

Checks `TRANSFER_EXECUTOR_POLICY`, `TRANSFER_SENDER_POLICY`, and `TRANSFER_RECEIVER_POLICY` on every call. The executor check runs even when `msg.sender == from`, so an executor allowlist can restrict holder-initiated transfers with no self-transfer exemption.

<Warning>
  `TRANSFER_EXECUTOR_POLICY` now applies to `transfer` (not only `transferFrom`). If you have configured a restrictive executor allowlist, holders who are not on that list can no longer initiate transfers directly — they must use an authorized executor.
</Warning>

## Example

```solidity Usage Example theme={null}
IB20(target).transfer(to, amount);
```