Priority
fees.
▸ /notes
▸ /faq
What is a priority fee on Solana?
An optional per-compute-unit tip on top of the flat 5,000-lamport base fee, priced in micro-lamports (millionths of a lamport) per CU. Validators schedule higher-paying transactions first when blocks or specific accounts are contended.
Why are there two sets of percentiles?
The network-wide numbers answer "what does it take to land anywhere" and sit at zero in quiet periods. The hot-account numbers sample slots that touched heavily contended state (Jupiter, Raydium, USDC), which is the market you actually compete in when trading.
How do micro-lamports become a real fee?
Multiply the rate by your compute-unit budget and divide by a million: 10,000 micro-lamports per CU on a 200,000 CU budget is 2,000 lamports, or 0.000002 SOL. Even aggressive tips are usually fractions of a cent.
What CU budget should I use?
Whatever your transaction actually consumes, plus margin: the runtime charges for the budget you request, and unused budget still counts against block limits. Simulate first, then set the limit near measured usage. The compute-unit guide covers typical figures.