Depositing Collateral

Last updated: Mar 13, 2026

Supported collateral

Synthetix Exchange runs on Ethereum Mainnet. Today, only USDT deposits are supported in the app. Additional collateral types are planned soon.

USDT is currently valued at full face value for deposits. Once additional collateral assets are enabled, non-USDT assets may have a haircut applied, meaning their effective collateral value is less than their market value.

What you need before depositing

• A supported wallet connected to Ethereum Mainnet
• One of the supported collateral assets in your wallet
• A small amount of ETH for gas (Ethereum Mainnet gas fees apply)

How to deposit

1. Go to exchange.synthetix.io and connect your wallet
2. Select the subaccount you want to deposit into (or create one)
3. Click Deposit
4. Select the collateral asset and enter the amount
5. If this is your first deposit with that asset, approve the token spend (one-time)
6. Confirm the deposit transaction in your wallet

Once the transaction is confirmed on Ethereum Mainnet (typically 12–15 seconds), your balance updates in the app.

Getting assets on Ethereum Mainnet

If you hold assets on another network or at a centralised exchange, you need to move them to Ethereum Mainnet first.

• Base Bridge — for assets on Base
• Stargate — cross-chain USDT
• Superbridge — Optimism → Mainnet

From a CEX: Most major exchanges (Binance, Coinbase, Kraken) support direct Ethereum Mainnet withdrawals. Choose "ERC-20" or "ETH Network" when withdrawing.

Minimum deposit

There is no protocol-enforced minimum deposit. However, very small deposits may not cover gas costs for subsequent trading transactions.

Deposit limits

There are no per-account deposit caps. Protocol-level TVL limits may apply during early deployment phases — the app will surface any active limits.

See also

• Withdrawing Collateral — how to withdraw available margin
• Leverage & Margin — how collateral is used to meet margin requirements
• Getting Started — full account setup walkthrough