In September 2021, there were around 117.5 million ETH coins in circulation, 72 million of which were issued in the genesis block — the first ever block on the Ethereum blockchain. Of these 72 million, 60 million were allocated to the initial contributors to the 2014 crowd sale that funded the project, and 12 million were given to the development fund.
The remaining amount has been issued in the form of block rewards to the miners on the Ethereum network. The original reward in 2015 was 5 ETH per block, which later went down to 3 ETH in late 2017 and then to 2 ETH in early 2019. The average time it takes to mine an Ethereum block is around 13-15 seconds.
In the August 2021 Ethereum network upgrade, the London hard fork contained the Ethereum Improvement Protocol, EIP-1559. Instead of the first-price auction mechanism where the highest bidder wins, EIP-1559 introduces a “base fee” for transactions to be included in the next block. Users that want to have their transaction prioritized can pay a “tip” or “priority fee” to miners. As the base fee adjusts dynamically with transaction activity, this reduces the volatility of Ethereum gas fees, although it does not reduce the price, which is notoriously high during peak congestion on the network.
One of the major differences between Bitcoin and Ethereum’s economics is that the latter is not deflationary, i.e. its total supply is not limited. Ethereum’s developers justify this by not wanting to have a “fixed security budget” for the network. Being able to adjust ETH’s issuance rate via consensus allows the network to maintain the minimum issuance needed for adequate security.
With the introduction of EIP-1559 however, the base fees used in transactions are burned, removing the ETH from circulation. This means higher activity on the network would lead to more ETH burned, and the decreasing supply should lead to appreciation of Ethereum price, all things equal. This has the potential to make Ethereum deflationary, something ETH holders are excited about — a potential appreciation in Ethereum price today.