BlockBeats News, September 8th, according to official sources, Circle's Cross-Chain Transfer Protocol (CCTP) now supports a prepaid fee feature for fast transfers. Previously, protocol fees were deducted directly from the USDC transfer amount on the destination chain; after this update, developers can pre-quote and collect fees via the source chain's native gas token or USDC before the transfer is executed, thereby simplifying fee handling for cross-chain transfers and ensuring users receive the expected amount of USDC.

It is noted that the prepaid fee mechanism primarily improves fee predictability in cross-chain applications. Users no longer need to bear the reduction in the actual received amount caused by additional deductions on the destination chain; meanwhile, the CCTP Quote API can uniformly calculate fees across different supported chains and consolidate Fast Transfer and Forwarding fees into a single quote, eliminating the need for developers to build separate systems to calculate multiple protocol fees. Additionally, fees can be paid directly using the source chain's native token, without reducing or affecting the actual USDC balance being transferred.

Currently, the prepaid fee feature supports USDC transfers on all EVM chains covered by CCTP, but transfers initiated from Solana are not yet supported, while transfers to Solana remain supported. Developers can obtain specific fee quotes through the Quote API and integrate this feature; relevant developers can refer to the official CCTP documentation to build more predictable cross-chain USDC transfer processes.