The Merge marked a pivotal moment in Ethereum’s evolution—the network’s transition from Proof-of-Work (PoW) to Proof-of-Stake (PoS), completed in September 2022. This shift fundamentally altered how new ETH enters circulation. Previously, ETH issuance stemmed from two sources: the execution layer (Mainnet) and the consensus layer (Beacon Chain). After The Merge, block production on the execution layer no longer generates new ETH. Let’s explore how this transformation reshaped Ethereum’s supply dynamics.
Understanding ETH Supply Mechanics
Ethereum’s supply is primarily governed by two opposing forces: issuance and burning.
- ETH issuance refers to the creation of new Ether, distributed as rewards to network participants.
- ETH burning describes the permanent removal of Ether from circulation, primarily through transaction fee destruction.
The balance between these two determines whether Ethereum experiences net inflation or deflation. With The Merge, issuance dropped dramatically—while burning remains demand-driven—opening the door to a potentially deflationary monetary policy.
Key Takeaways: ETH Issuance After The Merge
- Pre-Merge: Miners received ~13,000 ETH per day under PoW.
- Post-Merge: Stakers receive ~1,700 ETH per day, based on ~14 million ETH staked.
- Total new ETH issuance dropped by approximately 88% after The Merge.
- ETH burning now offsets issuance when network activity exceeds a threshold—specifically, when the average gas price exceeds ~16 gwei.
- This dynamic can result in net-zero or negative inflation, making ETH potentially deflationary.
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Before The Merge: The Proof-of-Work Era
Execution Layer Issuance
Under Proof-of-Work, miners secured the Ethereum network by solving cryptographic puzzles. They were rewarded with ETH for successfully mining blocks on the execution layer. Since the 2019 Constantinople upgrade, the base block reward was 2 ETH per block, with an average block time of ~13.3 seconds.
Additionally, miners earned "ommer" rewards—up to 1.75 ETH—for valid blocks that didn’t make it into the main chain. These incentives were crucial for maintaining network security but came at a high economic and environmental cost.
Annual issuance from mining alone was estimated at ~4.93 million ETH, contributing to a 4.09% inflation rate on a total supply of ~120.52 million ETH at the time of The Merge.
Consensus Layer Issuance (Beacon Chain)
The Beacon Chain launched in December 2020 as Ethereum’s PoS backbone. Unlike miners, validators stake ETH to propose and attest to blocks. They earn rewards based on performance, calculated every epoch (~6.4 minutes).
At 14 million ETH staked, the Beacon Chain issued roughly 1,700 ETH per day, or ~620,500 ETH annually—a 0.52% inflation rate relative to the total supply.
Pre-Merge Supply Breakdown
- Total ETH Supply: ~120.52 million (September 2022)
- Execution Layer Issuance: ~4.93 million ETH/year (4.09% inflation)
- Consensus Layer Issuance: ~620,500 ETH/year (0.52% inflation)
Total Annual Issuance Rate: ~4.61%
- ~88.7% from mining rewards
- ~11.3% from staking rewards
This structure favored energy-intensive mining, with most new supply going to miners.
After The Merge: The Proof-of-Stake Reality
Execution Layer: No More Issuance
Post-Merge, the execution layer no longer produces new ETH. PoW is obsolete. All block production is now handled by PoS validators on the consensus layer. Transactions from the execution layer are packaged into Beacon blocks and validated accordingly.
Block proposer and attestation rewards are now managed entirely within the consensus layer—no more mining rewards.
Consensus Layer: Ongoing Staking Rewards
Staking rewards continue as before—validators earn ETH for proposing blocks and attesting to chain state. These rewards accumulate in validator balances, separate from regular Ethereum accounts.
Until the Shanghai/Capella upgrade in April 2023, stakers couldn’t withdraw their principal or rewards. Now, they can:
- Withdraw excess earnings (balances above 32 ETH)
- Fully exit and withdraw their entire stake
To maintain network stability:
- Up to 4 validators can exit per epoch (900/day) by default.
- Additional exits are allowed based on total validator count (1 extra per 65,536 validators beyond 262,144).
- Exit rates slow if too many validators leave simultaneously—preventing destabilizing outflows.
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Post-Merge Inflation Overview
- Total ETH Supply: ~120.52 million (at Merge)
- Execution Layer Issuance: 0
- Consensus Layer Issuance: ~1,700 ETH/day (0.52% annual rate)
- Total Annual Issuance Rate: ~0.52%
- Net Reduction in Emissions: ~88.7%
The shift slashed Ethereum’s inflation rate from over 4% to just over half a percent—making it one of the most efficient major blockchain economies.
The Role of ETH Burning
Burning acts as a counterbalance to issuance. Every Ethereum transaction requires a base fee, paid in ETH and permanently destroyed. This mechanism was introduced in August 2021 via the London Upgrade and remains unchanged post-Merge.
Additional deflationary pressure comes from:
- Validator penalties for downtime
- Slashing for malicious behavior (e.g., double-signing)
These reduce validator balances without transferring funds—effectively burning ETH.
Calculating Deflation: The Break-Even Gas Price
To determine when Ethereum becomes deflationary, we compare daily issuance to daily burn.
Assuming:
- 7,200 blocks/day (12-second block time)
- 15 million gas per block
- Daily issuance: ~1,700 ETH
We solve for the average gas price (Y) needed to burn exactly 1,700 ETH:
7,200 × 15×10⁶ × Y × (1/10⁹) = 1,700
Y = 1,700 × 10⁹ / (7,200 × 15×10⁶) ≈ 16 gweiThus, when average gas prices exceed ~16 gwei, more ETH is burned than issued—resulting in net deflation.
This threshold adjusts with staking levels:
- If daily issuance rises to 1,800 ETH → break-even at ~17 gwei
- Function:
f(X) = X / 108, where X = daily issuance in ETH
High network usage can now shrink Ethereum’s supply—a powerful economic shift.
👉 Track real-time ETH issuance and burn rates—see when deflation kicks in.
Frequently Asked Questions
What was The Merge?
The Merge was Ethereum’s transition from Proof-of-Work to Proof-of-Stake in September 2022. It eliminated energy-intensive mining and reduced new ETH issuance by ~88%.
How much ETH is issued daily after The Merge?
Approximately 1,700 ETH per day is issued to stakers, depending on total staked ETH. This is a significant drop from the pre-Merge rate of ~13,000 ETH/day.
Can Ethereum become deflationary?
Yes. When network activity drives gas fees above ~16 gwei on average, more ETH is burned than issued—resulting in net deflation.
What is the impact of staking withdrawals?
Since the Shanghai upgrade, stakers can withdraw rewards and principal. While this increases liquidity, exit rate limits prevent destabilizing outflows.
How does ETH burning work?
Every transaction destroys a base fee in ETH. This "burn" reduces supply and offsets issuance, especially during high usage periods.
What are the long-term implications for ETH supply?
With lower issuance and active burning, Ethereum’s supply could stabilize or even decrease over time—potentially making ETH a scarce digital asset with deflationary traits.
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