What Is Ether (ETH)? Ethereum's Native Coin Explained for 2026

Ether, usually written ETH, is the native cryptocurrency of the Ethereum network. Ethereum is a blockchain, which is a shared ledger maintained by many independent computers, and it can run programs called smart contracts. ETH is the unit that moves across that ledger and pays for everything that happens on it.

The network was designed for more than payments. Developers use it to build decentralized applications, tokens, lending markets, exchanges, and games. Each action those applications take requires computing work, and ETH is the currency that compensates the people and machines doing that work.

A few terms are worth knowing from the start. The ticker ETH is the standard abbreviation used by exchanges, wallets, and data sites. Ether and ETH refer to the same asset. Ethereum, with a capital E, refers to the network itself. Ethereum is the second-largest cryptocurrency by market value after Bitcoin, though rankings shift and you should check a current data source for today's position.

ETH is also widely held as a store of value and as collateral in financial applications. Those uses are separate from its core job of paying fees, and the sections that follow explain each one in turn.

Ethereum was proposed in 2013 by Vitalik Buterin, a programmer who wanted a blockchain that could run general-purpose programs and not only track a digital currency. Ethereum's early development involved a public sale of ether in 2014, which funded the work that followed.

The main network launched in July 2015. In its first years, Ethereum used proof of work, the same basic security model Bitcoin uses, where miners compete with computing power to add blocks. Over time the developers introduced a series of upgrades that improved scalability, lowered costs for users, and changed how the network reaches agreement.

The most significant change came in September 2022, when the network moved from proof of work to proof of stake in an upgrade widely called The Merge. Under the new design, validators lock up ETH to take part in securing the chain. Since then, the energy use of the network has dropped sharply compared with the earlier design.

The network has continued to evolve with further upgrades that aim to make transactions cheaper and the network more efficient. Because the rules can change through agreed upgrades, the most reliable place to follow current status is the official Ethereum project materials and reputable technical news, not older summaries.

ETH has several practical jobs on the network, and each one creates demand for it.

• Paying transaction fees. Every transfer, token swap, or contract interaction requires a fee paid in ETH.
• Running smart contracts. Applications execute code on the network, and that computation is charged in ETH.
• Securing the network. Validators must lock up ETH to participate in consensus.
• Holding value. Many people hold ETH as a long-term asset, similar to how others hold gold or shares.
• Collateral in finance. ETH is accepted as collateral in lending and borrowing markets, and it is often used to back loans or stablecoins.

Some applications use a wrapped version of ETH, known as WETH, which follows the same price but works as a standard token. Wrapping is common because some older contracts were built before native ETH could be used in certain ways. You will see both forms in decentralized finance.

ETH is not the only token a user might need. Stablecoins, governance tokens, and network-specific tokens each serve different roles. Knowing which asset is needed for which action helps avoid mistakes, especially when moving funds between networks.

Every transaction on Ethereum needs gas, which is a measure of how much computing work the transaction requires. A simple transfer uses less gas than a complex contract interaction. The fee you pay is the gas used multiplied by the gas price, measured in small units of ETH called gwei.

Since the network's fee reform in 2021, each block has a base fee that adjusts up or down depending on how full recent blocks were. The base fee is destroyed when the transaction is processed, which means it is removed from circulation. Users can also add a priority tip to encourage validators to include their transaction sooner. The tip goes to the validator.

Fees vary a great deal. They tend to rise during periods of heavy demand, such as popular token launches or market surges, and fall when activity is quieter. Because of this, a transaction that is cheap on one day may cost much more on another.

Your wallet usually estimates the gas required and suggests a fee. Before confirming, look at the total cost in ETH and in your local currency. Many users also check a gas tracker run by a reputable block explorer to see current conditions. Layer-2 networks, which settle to Ethereum, often charge lower fees, but they have their own rules and bridging risks.

ETH has no fixed maximum supply. New ETH is created as a reward for validators who propose and attest to blocks. The amount issued depends on how many validators are active, so it is linked to how much ETH is staked. When more ETH is staked, the issuance rate for each validator changes, and the overall effect on supply shifts.

The other side of the balance is the burn. Because a base fee is destroyed with each transaction, the amount of ETH removed can be large during busy periods. When network activity is high, burning can exceed new issuance, and the total supply can decline. When activity is low, the supply may grow slowly.

This means ETH's supply is dynamic rather than capped. Some people see it as a form of inflation or deflation depending on conditions, and others focus on the network's usage. Neither view is settled, so it is sensible to form your own judgement based on current data.

To check the live supply, use a blockchain explorer or a reputable market data provider. These sources show circulating supply, the amount burned, and staking totals. Figures change constantly, so avoid relying on numbers from old articles, including this one.

Proof of stake means that validators secure the network by locking up ETH as collateral. A validator is an operator that runs software to propose blocks and vote on them. Validators earn rewards for honest work. If they act against the rules, part of their stake can be removed in a penalty known as slashing.

Running a validator independently requires 32 ETH per validator, along with a dependable computer and a stable internet connection. For most people, that threshold and the technical work make solo staking impractical. Many use a staking service instead, where a provider pools funds and handles operations.

Liquid staking protocols offer a middle path. You deposit ETH and receive a token that represents your stake and can often be used elsewhere. Lido issues stETH, and Rocket Pool issues rETH. Their rewards come from the underlying staking, and the tokens can typically be used in other applications, though this adds smart contract and market risk.

Staking is not risk free. Smart contract bugs, slashing events, withdrawal queues, and the price of the liquid token relative to ETH can all affect the outcome. Read how a protocol handles withdrawals, fees, and governance before you commit funds. Rewards also change over time and should be checked on the protocol's own pages or a trusted data source.

Many decentralized finance applications accept ETH directly, and it is one of the most widely used assets in the space. Lending markets let holders deposit ETH to earn interest or borrow other assets against it. Aave V3 and SparkLend are examples of lending protocols that accept ETH and related tokens as collateral.

Decentralized exchanges let users swap ETH for other tokens without a central operator. Uniswap V4 and Curve are two well-known examples, with Curve focused on low-slippage swaps between similar assets. Aggregators such as CoW Swap look across liquidity sources to find routes for a trade.

Some protocols let users borrow stablecoins against ETH. Liquity V2 is one example, where borrowers set their own interest rate and mint a stablecoin against collateral that can include ETH. Borrowing against a volatile asset carries a real risk of liquidation if the collateral value falls below the required level.

If you use these applications, start small and learn how each one works first. Understand the collateral ratio, the liquidation threshold, and any fees. Check that you are using the official app and the correct network. Remember that smart contracts can fail, and losses are not always recoverable. Decentralized finance is not a deposit account, and it does not carry the protections that regulated banks may provide.

There are several common routes to acquiring ETH. The most direct is buying through a regulated exchange or broker that supports it in your country. Exchanges differ in fees, supported payment methods, and verification requirements. Compare the total cost, including spreads and withdrawal charges, rather than focusing on a single headline fee.

Whatever platform you choose, check local laws and rules before you buy. Crypto rules differ widely between countries, and some activities that are allowed in one place are restricted in another. Tax treatment can also vary. If you are unsure, seek advice from a qualified professional in your jurisdiction.

Once you own ETH, you can keep it on the exchange or move it to a wallet you control. A self-custody wallet gives you direct control of your keys, but it also places the responsibility for security on you. Write down the recovery phrase offline, store it in a safe place, and never type it into a website or share it with anyone.

A hardware wallet can add protection because it keeps the private keys offline. Verify the device and its software from the official source, and be cautious about any request that asks you to approve transactions you do not understand. Scammers often impersonate support staff, send fake airdrop notices, or offer high returns. Treat unexpected contact as a warning sign.

ETH's price is set by trading across many venues, and it can move quickly in either direction. Past performance does not predict future results, and no source can guarantee a particular outcome. This article does not give price figures or predictions, because they change constantly and would be out of date soon after publication.

To check the current price, use a reputable market data provider or the price shown on the exchange you use. Compare several sources if the numbers differ, and be cautious about sites that look unfamiliar or ask for personal details. The same applies to supply, staking totals, and gas levels, which all have live sources you can check directly.

Keep an eye on upgrades as well. Ethereum's developers publish plans and test results before major changes, and reputable technical news covers them. Changes can affect fees, staking, and layer-2 networks, so it helps to know what is coming.

Finally, think about your overall plan. Decide how much you can afford to lose, how long you intend to hold, and whether you will stake, lend, or simply hold. Record your transactions for tax purposes where required. Diversifying across assets and avoiding borrowing to invest are sensible habits that many experienced holders follow.