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

# 1:1 Stablecoin Swaps

> USDT↔USDC conversion at a guaranteed 1:1 rate, no slippage, no market exposure.

## 1:1 Stablecoin Swaps

**Extension tier:** Premium

When the 1:1 Stablecoin Swaps extension is enabled, cross-stable conversions between USDT and USDC are executed at a guaranteed 1:1 rate. There is no slippage, no market exposure, and no variance between the deposited amount and the settled amount (net of the standard bridge fee).

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## The problem this solves

Without this extension, a cross-stable swap (e.g. a user deposits USDT and the destination expects USDC) is routed through a market. The settled amount depends on the USDT/USDC market price at the time of execution. In thin conditions, this can deviate from 1:1 by a meaningful amount.

For applications that display a quoted settlement amount to end users — onboarding flows, payment screens, balance estimations — any variance creates a UX problem and potential customer support burden.

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## How it works

Rhino maintains its own USDT and USDC reserves on supported chains. When a cross-stable deposit arrives, Rhino credits the destination from its reserves at exactly 1:1, then rebalances its own positions off the critical path.

The user's experience is: deposited USDT amount equals settled USDC amount (minus fee).

This applies to:

* USDT → USDC
* USDC → USDT

Both directions, across all supported chains where USDT and USDC are both available.

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## Integration

No API change is required. If your account has this extension enabled, any SDA or bridge request that specifies a cross-stable `tokenOut` will automatically use 1:1 pricing.

To confirm this extension is active on your account, check the [Rhino Console](/get-started/rhino-console) under Configuration, or contact your account representative.

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## Limits

Deposit limits for 1:1 swap routes follow the same limits as standard SDA deposits.

For very large individual transactions (above \$1M USD equivalent), contact your account representative to confirm available liquidity.

Volume based limits are applied to protect your app from abuse. These limits are customizable on a case by case basis.

* Account level limit - the total 1:1 swap volume limit over all transactions within a specified time frame (expressed in days)
* Recipient level limit - the total 1:1 swap volume limit per specific recipient

Once limits are hit, the service falls back to the market rate. If a recipient hits their limit, only their transactions will fall back to the market rate.

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## Related

* [Smart Deposit Addresses](/get-started/sda)
* [Fees & Limits](/get-started/fees-and-limits)
* [Extensions overview](/get-started/extensions)