Replace-by-Fee (RBF)

An unconfirmed transaction can be replaced by another version of the same transaction that spends the same inputs. Most full nodes support this if the earlier transaction enables BIP125 signaling and the replacement transaction increases the amount of fee paid. In terms of block chain space used, this is the most efficient form of fee bumping.

Receiving support

  • Notification does not note RBF
    Notification of incoming transaction does not note that the transaction is RBF signaling
  • Received transaction not labeled replaceable in list
    Does not visually indicate that an incoming transaction has signaled RBF
  • Received transaction not labeled replaceable in transaction details
    Does not visually indicate that a received transaction has signaled RBF when viewing the transaction details
  • Shows replacement and original transactions
    Both the original transaction and replacement transactions are shown in the transaction list

Sending support

  • Signals BIP125 replacability when sending transactions
    Allows sending of BIP125 opt-in-RBF transactions in the interface
  • Sent transaction not labeled replaceable in list
    Does not visually indicate that an outgoing transaction has signaled RBF
  • Sent transaction not labeled replaceable in transaction details
    Does not visually indicate that a sent transaction has signaled RBF when viewing the transaction details
  • Shows replacement and original transactions
    Both the original transaction and replacement transactions are shown in the transaction list

Usability

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Sending RBF Transaction - Default wallet send screen
Sending RBF Transaction - Default wallet send screen

Sending RBF Transaction - Wallet Send Screen (Transaction Fee details expanded)
Sending RBF Transaction - Wallet Send Screen (Transaction Fee details expanded)

Sending RBF Transaction - Warning prompt for low fee. Includes RBF note at the bottom when RBF disabled
Sending RBF Transaction - Warning prompt for low fee. Includes RBF note at the bottom when RBF disabled

Sending RBF Transaction - Warning prompt for low fee. Includes RBF note at the bottom when RBF enabled
Sending RBF Transaction - Warning prompt for low fee. Includes RBF note at the bottom when RBF enabled

Sending RBF Transaction - Transaction list screen for outgoing RBF transaction. No note of RBF transaction.
Sending RBF Transaction - Transaction list screen for outgoing RBF transaction. No note of RBF transaction.

Sending RBF Transaction - Transaction details screen for outgoing RBF transaction. No note of RBF transaction.
Sending RBF Transaction - Transaction details screen for outgoing RBF transaction. No note of RBF transaction.

Bumping RBF Enabled Transaction - Transaction details context menu showing “Increase transaction fee”
Bumping RBF Enabled Transaction - Transaction details context menu showing “Increase transaction fee”

Bumping RBF Enabled Transaction - Confirmation prompt for “Increase transaction fee”
Bumping RBF Enabled Transaction - Confirmation prompt for “Increase transaction fee”

Bumping RBF Enabled Transaction - Transaction list showing an additional transaction representing the bumped transaction. The original shows up greyed out and bracket around the amount.
Bumping RBF Enabled Transaction - Transaction list showing an additional transaction representing the bumped transaction. The original shows up greyed out and bracket around the amount.

Bumping RBF Enabled Transaction - Transaction details of the outgoing bumped RBF transaction. No flag for RBF.
Bumping RBF Enabled Transaction - Transaction details of the outgoing bumped RBF transaction. No flag for RBF.

Receiving RBF Transaction - Notification of incoming transaction. No specific note that the transaction is RBF signalled.
Receiving RBF Transaction - Notification of incoming transaction. No specific note that the transaction is RBF signalled.

Receiving RBF Transaction - Transaction List Screen. No RBF note.
Receiving RBF Transaction - Transaction List Screen. No RBF note.

Receiving RBF Transaction - Transaction Details screen for an RBF transaction. No RBF note.
Receiving RBF Transaction - Transaction Details screen for an RBF transaction. No RBF note.

Receiving Replacement RBF Transaction - New transaction notification for the RBF replacement transaction.
Receiving Replacement RBF Transaction - New transaction notification for the RBF replacement transaction.

Receiving Replacement RBF Transaction - Transaction List Screen. No RBF note. Both the original and bumped transaction appear with “?”/unconfirmed.
Receiving Replacement RBF Transaction - Transaction List Screen. No RBF note. Both the original and bumped transaction appear with “?”/unconfirmed.

Receiving Replacement RBF Transaction - Transaction Details screen for original transaction. No RBF note.
Receiving Replacement RBF Transaction - Transaction Details screen for original transaction. No RBF note.

Receiving Replacement RBF Transaction - Transaction Details screen for replacement transaction. No RBF note.
Receiving Replacement RBF Transaction - Transaction Details screen for replacement transaction. No RBF note.