Fee Bumping

Mechanism

Fee bumping is a mechanism in cryptocurrency networks where a sender increases the transaction fee of an unconfirmed transaction already broadcast to the network. This practice, often facilitated by “Replace-By-Fee” (RBF) functionality, allows the sender to create a new transaction with the same nonce but a higher fee. The higher fee incentivizes miners to prioritize the new transaction for inclusion in an upcoming block, effectively replacing the original, lower-fee transaction. It provides a way to expedite stalled transactions.