Abstract
Ethereum Improvement Proposal 1559 (EIP-1559) redefined the transaction fee market on the Ethereum blockchain. Introduced in the London Hard Fork (August 2021), it replaced the legacy auction-based gas model with a dynamic base fee + tip mechanism. This article explores how EIP-1559 works, its economic effects on ETH supply, and its role in the broader evolution toward Ethereum’s deflationary and scalable future.
Conceptual Background
Before EIP-1559, Ethereum used a first-price auction for transaction inclusion. Users submitted bids (gas prices), and miners selected the highest-paying transactions. This model caused:
High volatility in gas fees.
Poor user experience (hard to predict optimal gas).
Network congestion and overbidding.
EIP-1559 introduced predictable pricing and a fee burn model. Instead of pure competition, users pay a base fee determined by network demand plus an optional tip to miners for priority inclusion.
Mechanism of EIP-1559
The proposal defines a new structure for transaction fees:
Total Transaction Fee = Base Fee + Priority Fee (Tip)
Base Fee:
Determined algorithmically by the protocol and burned (destroyed).
It adjusts block by block depending on demand.Priority Fee (Tip):
Optional incentive for validators (formerly miners).
Paid directly to the block producer.Block Gas Target:
Each block has a target gas usage (e.g., 15 million gas) and a maximum limit (30 million gas).
If blocks exceed the target, the base fee rises; if below, it falls.
Mathematical Model
If gas_used > gas_target, then:
new_base_fee = old_base_fee * (1 + (gas_used - gas_target) / gas_target / 8)If gas_used < gas_target, then:
new_base_fee = old_base_fee * (1 - (gas_target - gas_used) / gas_target / 8)This ensures gradual adjustment rather than abrupt changes.
Simplified Workflow (Mermaid Diagram)
Step-by-Step Example
Network Congestion:
The base fee rises automatically as demand grows.User Sends Transaction:
Alice specifies a max fee of 100 gwei and a tip of 2 gwei.Network Base Fee:
Assume 90 gwei.90 gwei is burned.
2 gwei goes to the validator.
8 gwei refunded to Alice (100 – 90 – 2).
Next Block Adjustment:
If usage remains high, the base fee increases again.
This structure prevents bidding wars and stabilizes network costs.
Economic Impact: ETH Burn and Deflation
EIP-1559 introduced permanent ETH burning, reducing supply over time.
Key effects:
Part of every transaction fee is destroyed.
Network activity directly impacts ETH scarcity.
Post-Merge (Ethereum’s transition to Proof of Stake), issuance dropped sharply—burns often outpace new ETH creation, creating deflationary pressure.
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