L2 transaction fees may look cheap, but sequencers still earn big money. The secret lies in their cost structure and pricing power. Most of the gas fees you pay go to the sequencer—only a tiny portion goes to the Ethereum mainnet for data settlement.
Step 1: The sequencer earns a "spread"
Users feel that fees are low because of the cheap per-transaction cost on L2. But the sequencer's profit comes from total L2 transaction fees minus the cost paid to Ethereum L1 for data settlement. This gap is enormous.
Take February 4, 2026, as an example: Arbitrum collected $1.04 million in L2 fees in a single day, while paying less than $20,000 for L1 settlement. That's a daily profit above $1 million. Base is even more striking—community data shows its sequencer profit margin is above 90%, earning over $100 million since launch.
Completion check: You can explain that the sequencer's profit comes from the "spread," not by raising per-transaction fees.
Step 2: Why sequencers have pricing power
Sequencers make money not only from high transaction volume, but also from their advantageous position in the economic structure.
Price discrimination: Sequencers can charge priority fees. High-value transactions (like arbitrage) are willing to pay higher gas to front-run, while ordinary users pay very little. This ability lets sequencers capture the money from high-value trades.
Mainnet cannot do this: Ethereum mainnet can't perform such fine price discrimination because all transactions are packed into blocks at similar costs. So L2 sequencers earn far more from L2 transactions than the mainnet ever captures.
Common misconception: Many believe that low L2 fees mean sequencers have no profit. In reality, low fees apply to marginal users, while high-value users still pay a significant premium to the sequencer.
Key risk: The bulk of sequencer revenue goes to L2 operators and does not flow back to Ethereum. In Q1 2026, Ethereum mainnet captured only 4.9% of the economic value generated by application layers, while Base and other L2s earned huge profits. If L2s continuously sell the earned ETH (community questions Base's practice of "revenue flowing to Coinbase and possibly being sold"), it could create ongoing selling pressure on ETH.
Step 3: Where does the sequencer profit go?
The money earned does not necessarily stay in the L2 ecosystem.
Base controversy: The Base sequencer revenue address shows all profits flow along the path "Base → Ethereum mainnet → Coinbase exchange". Coinbase's financial reports show Base-related ETH holdings barely increased, leading the community to suspect these ETH have been sold.
Optimism model: OP governance passed a proposal to use 50% of Superchain sequencer net profit to buy back OP tokens, linking network profits with token value.
Decentralized sequencer experiments: L2s like Morph are trying to distribute sequencer profits to on-chain DApp developers, letting ecosystem participants share the revenue.
Verification method: Go to DeFiLlama or Dune and search for a specific L2's "sequencer revenue" and "L1 settlement cost," then calculate the profit margin yourself. If you see an L2 with very low fees but extremely high volume (like Base), its sequencer income is usually still substantial, driven by scale effects.
