How to cancel a pending transaction on MetaMask? (Speed Up/Cancel)

Understanding Pending Transactions in MetaMask

1. A pending transaction appears when it has been broadcast to the Ethereum network but not yet confirmed by miners or validators.

2. The status remains pending until sufficient block confirmations are added, which depends on network congestion and gas price.

3. MetaMask does not provide a direct “cancel” button for transactions already submitted to the network.

4. Users must manually initiate a replacement transaction using the same nonce to override the original.

5. This process relies entirely on Ethereum’s transaction queue mechanics and cannot be enforced by MetaMask itself.

Requirements for Transaction Replacement

1. The wallet must hold enough ETH to cover gas fees for both the original and replacement transactions.

2. The replacement transaction must use the exact same nonce as the pending one — visible in the transaction details under “Nonce”.

3. Gas price for the replacement must be at least 10% higher than the original to meet EIP-1559 and legacy network expectations.

4. Users need access to the advanced settings in MetaMask to manually edit nonce and gas parameters.

5. Network selection matters — replacements only work on chains where nonce ordering is strictly enforced, like Ethereum Mainnet or Polygon.

Step-by-Step Speed Up Process

1. Open MetaMask and navigate to the “Activity” tab.

2. Locate the pending transaction and click the three-dot menu icon next to it.

3. Select “Speed Up” — this auto-generates a new transaction with incremented gas price and identical nonce.

4. Review the suggested gas fee; adjust manually if needed via “Edit” before confirming.

5. Sign the new transaction — once mined, the original becomes invalid due to nonce reuse.

Step-by-Step Cancel Process

1. In the “Activity” tab, find the pending transaction and open its details.

2. Click the three-dot menu and choose “Cancel”.

3. MetaMask will propose a zero-value transaction sent to your own address with the same nonce.

4. Ensure gas price is set above current base fee + priority fee; otherwise, the cancellation may stall.

5. Confirm the transaction — successful mining replaces the original with a no-op transfer.

Frequently Asked Questions

Q: Can I cancel a pending transaction on BSC or Arbitrum using MetaMask?Yes, provided the chain enforces sequential nonces and supports EIP-1559 or legacy gas pricing models. BSC and Arbitrum do support this behavior.

Q: What happens if my replacement transaction also stays pending?It means the gas price remains insufficient. You must submit another replacement with higher fees — each attempt requires a new signature.

Q: Will MetaMask notify me when a pending transaction is dropped from the mempool?No. MetaMask does not monitor mempool eviction. Users must check explorers like Etherscan or use third-party tools to verify status.

Q: Is it safe to reuse the same nonce across different networks?No. Nonces are chain-specific. Using the same nonce on Ethereum and Polygon simultaneously creates independent pending states with no interference.