Mixoor Fees, Limits & Supported Chains — Complete Reference
Transparent breakdown of Mixoor's fees, deposit limits, supported assets, and gas costs across Solana, Ethereum, BNB Chain, and Sui. No hidden charges.
By Jorge Rodriguez · 3 min read · 2025-05-01
Fee structure
Mixoor charges a single flat-percentage protocol fee deducted from the withdrawal amount. There is no deposit fee, no subscription, and no hidden charges. The fee covers protocol maintenance, relayer infrastructure (on EVM chains), and smart contract operations.
| Chain | Protocol Fee | Deposit Fee | Gas Cost (approx.) |
|---|---|---|---|
| Solana | 0.15% | None | ~$0.001 |
| Sui | 0.15% | None | ~$0.003 |
| Ethereum | 0.25% | None | ~$2–8 (varies) |
| BNB Chain | 0.25% | None | ~$0.10 |
Supported assets and minimum deposits
| Chain | Supported Assets | Min Deposit | Max Deposit |
|---|---|---|---|
| Solana | SOL, USDC | 0.05 SOL / 10 USDC | No max |
| Ethereum | ETH | 0.05 ETH | No max |
| BNB Chain | BNB | 0.025 BNB | No max |
| Sui | SUI | Gas only | No max |
Minimum deposits exist to ensure withdrawals remain economically viable after gas costs. There is no maximum deposit limit — the smart contract accepts any amount above the minimum.
Fee calculation examples
The protocol fee is deducted from the withdrawal, not the deposit. This means you always deposit the full amount and the recipient receives amount minus fee.
| You Deposit | Chain | Fee | Recipient Gets |
|---|---|---|---|
| 1 SOL | Solana | 0.0015 SOL | 0.9985 SOL |
| 100 USDC | Solana | 0.15 USDC | 99.85 USDC |
| 1 ETH | Ethereum | 0.0025 ETH | 0.9975 ETH |
| 10 BNB | BNB Chain | 0.025 BNB | 9.975 BNB |
| 100 SUI | Sui | 0.15 SUI | 99.85 SUI |
Transaction speed by chain
| Chain | Proof Generation | Withdrawal Finality | Total Time |
|---|---|---|---|
| Solana | 2–5 seconds | < 1 second | ~5 seconds |
| Sui | 2–5 seconds | ~2 seconds | ~7 seconds |
| Ethereum | 2–5 seconds | ~15 seconds | ~20 seconds |
| BNB Chain | 2–5 seconds | ~3 seconds | ~8 seconds |
Proof generation time depends on your device. Modern laptops and phones generate proofs in 2–3 seconds. Older devices may take up to 10 seconds. The proof is generated in WebAssembly and does not require any server interaction.
Frequently asked questions
Why is the Ethereum fee higher?
Ethereum and BNB Chain withdrawals use a relayer to submit the proof transaction. The relayer pays the gas and is reimbursed from the withdrawal amount. The 0.25% fee covers both protocol costs and relayer gas. On Solana and Sui, the user submits directly, so no relayer is needed.
Are there any hidden fees?
No. The only costs are the protocol fee (shown above) and the blockchain gas fee for the deposit transaction. The withdrawal gas is either paid by you (Solana/Sui) or covered by the relayer (Ethereum/BNB) from the protocol fee.
Will fees change in the future?
Fee percentages are set in the smart contract code and cannot be changed without a contract upgrade. Any fee changes would be announced in advance and deployed as a new contract version.
Can I withdraw partial amounts?
No. Each deposit is withdrawn as a single unit (minus the fee). If you deposit 1 SOL, you withdraw ~0.9985 SOL. This is by design — partial withdrawals would weaken the anonymity set by linking deposit and withdrawal amounts.
Solana transfers start at 0.15% with sub-second finality.
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