Files
bitcoin-mirror/doc/release-notes-29278.md
2026-09-15 12:26:42 +01:00

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Wallet

  • A new wallet startup option -maxfeerate is added.
  • This option sets the upper fee rate limit for wallet transactions.
  • The wallet will not submit or broadcast transactions whose fee rate exceeds -maxfeerate.
  • The default is 0.10 BTC/kvB (10,000 sat/vB).

RPC

  • Transaction broadcasts now check the specified maxfeerate limit and fail if the transaction fee rate exceeds it.
  • Transaction broadcast fee limit error messages are now more specific: -maxtxfee errors return "Fee exceeds maximum configured by user (maxtxfee)", while maxfeerate errors return a MAX_FEE_RATE_EXCEEDED error with "Fee rate exceeds maximum configured by user (maxfeerate)".