> For the complete documentation index, see [llms.txt](https://docs.asterdex.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.asterdex.com/trading/spot/usdt-usdc-swap.md).

# USDT-USDC Swap

### Overview

Aster supports instant swaps between USDC, USDC.e, and USDT, allowing users to convert stablecoins directly within their account without using the order book.

The swap feature is designed to simplify stablecoin management and make it easier to move funds between supported settlement assets before trading.

**During the current promotional period (11 May 2026 - 10 June 2026), all swap fees are waived.**

###  Supported Swap Pairs

The following swap directions are supported:

* USDC → USDT
* USDT → USDC
* USDC.e → USDT
* USDT → USDC.e

Note:

* USDC refers to native Ethereum USDC
* USDC.e refers to bridged USDC on Arbitrum

***

### Fees

| Swap Pair     | Standard Fee | Promotional Period |
| ------------- | ------------ | ------------------ |
| USDC → USDT   | 0.1%         | FREE               |
| USDT → USDC   | 0.1%         | FREE               |
| USDC.e → USDT | 0.1%         | FREE               |
| USDT → USDC.e | 0.1%         | FREE               |

### Daily Limits

| Limit Type                | Amount      |
| ------------------------- | ----------- |
| Daily platform-wide limit | 500,000 USD |
| Daily individual limit    | 100,000 USD |

The available swap amount is determined by the lowest of:

* Remaining platform-wide quota
* Remaining personal daily quota
* Available balance in the swap account


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://docs.asterdex.com/trading/spot/usdt-usdc-swap.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.