Sending Private Transactions (Priority Fee)

Learn how to add tips to private transactions submitted via GetBlock's bloxRoute integration.

Priority fees incentivize MEV builders to include your transaction faster and position it more favorably within a block. Adding a tip to your private transaction provides three key benefits:

• Higher inclusion probability — Builders prioritize transactions with higher fees

• Better block positioning — Achieve positions 1–2 more reliably

• Faster confirmation — Reduce waiting time for transaction inclusion

Choosing a Method

They are Two approaches exist for adding priority fees to private transactions:

Method	Best For	Trade-offs
Multicall3	Most use cases	Single nonce, atomic execution, slightly higher gas
Bundle	Advanced scenarios requiring separate transactions	Two nonces, more complex setup

Recommendation: Use Multicall3 for most applications. It guarantees atomic execution and simplifies nonce management.

Comparison: Multicall vs Bundle

Aspect	Bundle (2 TX)	Multicall (1 TX)
Nonce consumption	2 nonces	1 nonce
Atomicity	Depends on builder	Guaranteed
API Method	blxr_submit_bundle	bsc_private_tx
Fee payment	Separate TX	Internal transfer
Complexity	Higher	Simpler

Recommended Tip Amounts

Priority	Tip Amount	Use Case
Low	0.0001 BNB	Regular trades
Medium	0.0005 BNB	Time-sensitive
High	0.001 BNB	Arbitrage, liquidations
Very High	0.005+ BNB	Critical, competitive

Note: A higher tip means higher priority, but you only pay if TX is included.

Additional Resources

• Multicall3 Contract Documentation

• BloXroute BSC Documentation

• BSCScan Explorer