Ethereum Improvement Proposals (EIPs) Explained Simply
Understand Ethereum Improvement Proposals (EIPs) — how upgrades happen. Learn how they work, see examples like ERC-20 and EIP-1559, and why they matter.
Ethereum Improvement Proposals (EIPs) Explained Simply
Ethereum Improvement Proposals (EIPs) are design documents that propose changes to the Ethereum network. They outline new features, technical standards, or process improvements that developers can discuss and potentially implement. Think of an EIP as a formal suggestion — anyone can submit one, but only those that gain community consensus become part of Ethereum's evolution.
What Are Ethereum Improvement Proposals and Why Do They Matter?
Ethereum Improvement Proposals (EIPs) serve as the primary mechanism for coordinating upgrades to the Ethereum blockchain. Without them, the network would have no structured way to introduce fixes or innovations. Each EIP includes a detailed technical specification, rationale, and potential impact. This open process ensures that changes are transparent and debated before being adopted.
The EIP Lifecycle
An EIP begins as an idea posted on the Ethereum Magicians forum or a GitHub repository. It progresses through four numbered stages:
- Draft – The proposal is written and open for initial feedback.
- Review – Editors and the community comment on technical details and design.
- Last Call – A final review period before a decision is made.
- Final – The proposal is accepted and scheduled for implementation.
Some EIPs become Standards Track (protocol changes), others are Informational (guidelines), or Meta (process tweaks). The entire community — developers, miners, node operators, and users — can provide feedback during each stage.
Key Examples of Prominent EIPs
Let's look at practical examples that beginners should recognize.
- EIP-20 (ERC-20): This created the token standard for fungible tokens like stablecoins and governance tokens. It defines a set of functions any token contract must implement, such as
transferandbalanceOf. Nearly every token on Ethereum follows this standard. - EIP-721 (ERC-721): This introduced the Non-Fungible Token (NFT) standard. Unlike ERC-20 tokens, each ERC-721 token is unique. It enabled digital art, collectibles, and in-game items to be represented on the blockchain.
- EIP-1559: This changed Ethereum's fee market by introducing a base fee that gets burned, making fees more predictable. It also added a priority tip to incentivize miners (now validators) during high congestion.
The table below compares these three major EIPs:
| EIP Number | Name / Standard | Purpose | Impact |
|---|---|---|---|
| EIP-20 | ERC-20 Token Standard | Fungible token interface | Foundation for DeFi tokens |
| EIP-721 | ERC-721 Non-Fungible Token Standard | Unique asset representation | Enabled NFT marketplaces |
| EIP-1559 | Fee Market Change | Base fee burning + priority tip | Reduced fee volatility |
How EIPs Are Proposed and Approved
The process for creating an Ethereum Improvement Proposal is democratic but rigorous. First, an author drafts the proposal in a standard format. Then they submit it as a pull request to the Ethereum EIPs GitHub repository. Editors review it for completeness and clarity. If accepted, it enters the Draft stage. After community discussion and testing, it may advance to Review and then Last Call. Finally, if the network's core developers reach rough consensus, the EIP becomes Final and is implemented in a future hard fork or upgrade.
Who Can Submit an EIP?
Anyone with a solid technical understanding can submit an EIP. However, most authors are experienced developers or researchers. Beginners can still participate by reading and commenting on proposals. Community feedback heavily influences whether an EIP moves forward. For example, early drafts of EIP-1559 sparked months of debate before being refined and approved.
Common Misconceptions About EIPs
One misconception is that all EIPs automatically become part of Ethereum. In reality, many are rejected or abandoned. Another is that EIPs only refer to code changes — they can also document standards or processes. Ethereum Improvement Proposals are also often confused with ERCs (Ethereum Request for Comments), but ERCs are a subset of EIPs focused on application-level standards. Always check the status field on the EIP's page (e.g., "Final" or "Stagnant") before relying on it.
Conclusion
Understanding Ethereum Improvement Proposals is essential for anyone following the network's development. They are the lifeblood of Ethereum's evolution, enabling everything from token standards to fee reforms. Whether you build on Ethereum or simply use it, knowing how EIPs work helps you appreciate the community's careful decision-making. To stay informed, follow the official EIPs repository and participate in discussions — your voice matters in shaping the future of the network.
💡 Pro Tip: Check the EIP GitHub repository's "Last Call" section to see which proposals are about to be finalized. Testing these early on testnets can give you a head start on new features. Warning: Do not assume an EIP is finalized just because it has a number. Many early-stage EIPs are never adopted. Always verify the status (e.g., "Final" or "Living") before relying on it in a project.