RBF and CPFP Guide

When a transaction is delayed by low fees, the two best-known recovery tools are Replace-by-Fee and Child Pays for Parent. Both aim to raise the economic incentive for miners to confirm the transaction set sooner.

Why This Topic Matters

RBF works when the original transaction was marked as replaceable. The sender republishes a new version with a higher fee rate, giving miners a better option than the first broadcast.

CPFP is different. It creates a new child transaction that spends an output from the stuck parent. Miners evaluate the combined fee package, so a strong child fee can pull the parent into a block.

What to Watch Next

For users searching how to speed up bitcoin transaction, this guide needs clear language, practical examples, and reminders to check wallet support before taking action.

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Key facts to remember:

• Bitcoin fees depend on block-space competition, not the amount of money sent.

• sat/vB is the standard unit for comparing transaction priority.

• The mempool changes quickly, so live charts are better than stale averages.

• During congestion, patience or fee bumping can be smarter than random overpayment.