The Solana base fee is the minimum, mandatory cost for every transaction on the network. It is deterministic, predictable, and extremely low — a core feature of Solana's design philosophy that enables mass-market adoption.

The 5,000 Lamport Standard

Every transaction on Solana requires at least one signature, and each signature costs 5,000 lamports. One SOL equals 1,000,000,000 lamports, so 5,000 lamports is 0.000005 SOL. At a SOL price of $150, this equals $0.00000075 USD for the base fee alone — effectively zero for practical purposes.

Solana's base fee is deliberately set low to support use cases that require thousands of micro-transactions — payments, gaming, trading bots, and more.

Solana Foundation

How the Base Fee Is Distributed

The base fee collected from each transaction is split 50/50. Half (2,500 lamports per signature) is permanently burned, reducing the circulating SOL supply over time. The other half (2,500 lamports per signature) is paid to the validator who included the transaction in a block. This creates a deflationary pressure on SOL while rewarding network participants.

Multiple Signatures = Multiple Base Fees

If a transaction requires multiple signatures — for example, a multi-sig wallet approval or a complex program interaction — each additional signature adds another 5,000 lamports to the base fee. A transaction requiring three signatures would cost 15,000 lamports (0.000015 SOL) as its base fee. This is still a fraction of a cent at any reasonable SOL price.

Why the Base Fee Doesn't Change with Congestion

Unlike Ethereum's gas price mechanism (where fees rise and fall with network demand), Solana's base fee is fixed. This is possible because Solana's high throughput prevents the bottlenecks that force fee auctions on other networks. During peak activity, priority fees can be added optionally — but the base fee remains stable at 5,000 lamports per signature.