The OneKey App provides an interface for its users through the "Trade" module, which supports on-chain token swaps and cross-chain transactions via integrated third-party providers. OneKey charges a service fee for facilitating this technology and routing infrastructure. Below is a complete breakdown of the current service fee structure for the Trade module (including Swaps and Cross-chain).
🔔 Key Highlights
✅ Swaps between supported stablecoins enjoy a 0% service fee
✅ Cross-chain swaps initiated via decentralized channels and other non-stablecoin pair swaps are charged a 0.3% service fee
✅ Cross-chain swaps initiated via centralized channels are charged a 0.5% service fee
✅ No hidden fees—pricing is always displayed before confirmation
Networks Supporting Fee-Free Stablecoin Swaps
Currently, swapping the stablecoins listed below on the same network is eligible for a 0% service fee.
Network | Supported Stablecoins |
Avalanche C-Chain | USDT, USDC, USDC.e, DAI.e, BUILD |
Optimism | USDT, USDC, USDC.e, USDe, DAI, BUILD |
Scroll | USDT, USDC, USDe |
TRON | USDT, USDC |
Mantle | USDT, USDC, USDe |
BNB Smart Chain (BSC) | USDT, USDC, USDe, USD1, DAI, lisUSD |
Ethereum | USDT, USDC, USDS, USDe, sUSDe, DAI, USDF, BUILD, USD1, USDTb, FDUSD, PYUSD, TUSD, USD0, USD0++, crvUSD, USDY, USDX, RLUSD, USDD, M, USYC, GHO, USDA, USR, DOLA, TBILL, FXS, deUSD, YU, fxUSD, reUSD, sDAI |
Base | USDC, USDS, USDT |
NEAR | USDT, USDC |
Polygon PoS | USDT, USDC, USDC.e, DAI |
Arbitrum One | USDT, USDC, USDC.e, USDe, DAI, USDS, BUILD, FDUSD, USDY, USD0 |
Solana | USDT, USDC, PYUSD, USDS, FDUSD, USDY |
Frequently Asked Questions (FAQs)
How is the service fee calculated?
Service Fee = Transaction Amount × Rate
Example:
Swapping $10,000 between supported stablecoins
→ $10,000 × 0% = $0Cross-chain swap initiated via a decentralized channel or other non-stablecoin pair swap of $10,000
→ $10,000 × 0.3% = $30
Cross-chain swap transaction initiated via a centralized channel of $10,000
→ $10,000 × 0.5% = $50
When is the service fee deducted?
The service fee is applied automatically when the swap is executed and is reflected in the final transaction details.
Will rates or supported tokens change?
Yes. OneKey may adjust rates, supported networks, or the token list at its sole discretion to maintain fairness, compliance, and operational efficiency. We recommend you check this announcement periodically for the latest information.
Does the 0% fee policy apply to all swap channels in the OneKey App?
No. The 0% fee policy only applies to eligible stablecoin swaps completed through third-party channels where OneKey can manage the rates. Some third-party swap providers integrated into the OneKey App (such as Changelly and ChangeHero) also support stablecoin swaps. However, transactions initiated through these channels are not eligible for the 0% fee policy. If any fees apply, they will be clearly displayed on the preview page before you confirm the transaction.