rETH Token Mechanics
rETH is Rocket Pool's liquid staking token - but unlike stETH which rebases (increases your balance daily), rETH uses a value-accrual model that keeps your token balance constant while the ETH value per token compounds. This design makes rETH immediately DeFi-compatible without needing a wrapper like wstETH, and the ETH/rETH ratio gives you a clean view of your actual staking gains at any moment.
rETH Key Metrics
Interactive: ETH/rETH Ratio Over Time
? rETH vs stETH vs wstETH
| Token | Balance Changes? | ETH Value | DeFi Compatible? | Wrapper Needed? |
|---|---|---|---|---|
| rETH | No - stays constant | Increases (ratio grows) | Native | No |
| stETH | Yes - daily rebase | Increases (balance grows) | ? Most protocols use wstETH | Yes - wstETH |
| wstETH | No - stays constant | Increases (price grows) | DeFacto standard | Already wrapped |
Calculator: Your rETH Position
How rETH Accrues Value - Step by Step
How rETH value accrual works
When you deposit ETH into Rocket Pool, you don't receive rETH at a 1:1 ratio. Instead, you receive rETH proportional to the current ETH/rETH exchange rate. This rate is calculated as totalPooledEther totalRethSupply, and it starts at 1.000 (launch ratio) and grows as the protocol accrues consensus-layer rewards. The key insight is that rETH holders own a share of the pool, not a fixed amount of ETH.
When a validator earns rewards, those rewards are added to totalPooledEther. Since no new rETH is minted during a reward event, the ratio increases - which means every existing rETH holder's tokens are now worth more ETH. This is mathematically equivalent to Lido's rebase, but from a token-balance perspective it's the opposite: stETH holders wake up with more tokens; rETH holders wake up with tokens worth more ETH.
The practical implication is that rETH is immediately usable in DeFi without any special accounting. If you supply rETH to Aave as collateral, your balance stays constant - but the ETH value of that collateral grows automatically as the ratio increases. This is exactly what money markets need: a token whose balance is static but whose collateral value compounds over time.
Key concepts
- ETH/rETH ratio
- The core state variable of Rocket Pool's token system: totalPooledEther totalRethSupply. This ratio starts at 1.000 and increases every time consensus-layer rewards are credited to Rocket Pool validators. You can think of it as the "price" of rETH in ETH terms - if the ratio is 1.070, 1 rETH buys 1.070 ETH. New depositors pay the current ratio when they mint rETH, so existing holders are never diluted by new supply.
- Non-rebasing ERC-20
- rETH's balanceOf() for any wallet is static unless the holder specifically mints or burns. This is critical for DeFi compatibility: lending protocols track collateral value by monitoring balance (for rebasing) or price-per-token (for non-rebasing). rETH's design supports both patterns - price-based accounting - without needing a wrapper. Most DeFi protocols use price oracles rather than balance tracking for collateral management, making rETH a natural fit.
- Minting formula
- The rETH minting formula is: rETH minted = ETH deposited (totalRethSupply totalPooledEther). This means a new depositor always pays the prevailing market rate for their rETH. If you're the first depositor and totalPooledEther = totalRethSupply = 1, your 1 ETH gets you 1 rETH. If the second depositor arrives when totalPooledEther = 2 and totalRethSupply = 2 (after a reward event), their 1 ETH still gets them 1 rETH. The formula ensures proportional fairness across all depositors over time.
- Market cap dynamics
- rETH market cap = rETH circulating supply ETH/rETH ratio. As the ratio grows, the market cap increases even if no new rETH is minted. For comparison, if totalRethSupply is 600,000 and the ratio is 1.035, rETH market cap = 600,000 1.035 = 621,000 ETH ($2.5B at $4,000/ETH). The ratio growth comes from validator rewards minus operator commissions and protocol fees - a mostly predictable stream that makes rETH market cap forecasting relatively straightforward.
- rETH as collateral
- Aave V3 accepts rETH as collateral with a typical LTV of 60-70%. When rETH is supplied, Aave tracks its value using a price oracle that reads the ETH/rETH ratio on-chain. Since the ratio is always increasing (rewards are always accruing), the ETH value of your rETH collateral compounds automatically. If you borrow against it, you're effectively borrowing against future staking rewards - a powerful leverage mechanism that lets you earn staking yield while borrowing at roughly the same rate.
Supply dynamics
rETH supply changes only when ETH is deposited or when rETH is burned for withdrawal. The minting formula ensures that new rETH always enters circulation at the current ETH/rETH ratio, so there's no sudden supply shock from arbitrageurs minting rETH at a discount. The supply iselastic in only one direction: when withdrawals are requested, rETH is burned and ETH is released from the deposit pool.
The circulating supply of rETH is not capped - it grows as more ETH is staked and shrinks as withdrawals are processed. The Rocket Pool protocol manages the supply-demand balance through the deposit pool rate, which acts as an interest rate for rETH holders: when demand to stake ETH is high and the deposit pool runs low, the rate increases, attracting more stakers and increasing rETH supply.
Frequently asked questions
- What is the ETH/rETH ratio and how does it work?
- The ETH/rETH ratio represents how much ETH one rETH is worth. When you deposit 1 ETH into Rocket Pool you receive rETH at the current ratio - if the ratio is 1.035, your 1 ETH deposits gets you 1/1.035 ? 0.966 rETH. Over time as the protocol earns consensus-layer rewards, the denominator (totalPooledEther) grows faster than the numerator (totalRethSupply), so the ratio increases and each rETH is worth more ETH. The ratio is viewable on-chain and displayed on the Rocket Pool dashboard.
- Why does rETH use value accrual instead of rebasing?
- Rebasing tokens (like stETH) increase your token balance daily, which breaks most DeFi accounting. AMM LP positions, lending vault collateral ratios, and fixed-income instruments all assume a static token balance - if the balance keeps changing, the math breaks. rETH's non-rebasing design means your balance stays constant while the ETH value per token increases, which is mathematically equivalent to a rebase from a value perspective but preserves standard ERC-20 behavior that DeFi protocols expect.
- How does the rETH supply calculation work?
- rETH is minted using the formula: rETH minted = ETH deposited (totalRethSupply totalPooledEther). When ETH is deposited, totalPooledEther increases; when rewards are added, totalPooledEther increases again. This means new depositors always get rETH at the current ratio, and existing holders benefit because the ratio increases as the pool grows without diluting existing rETH holders. This is Rocket Pool's key innovation - it's like a staking pool with an internal exchange rate.
- What is rETH's current market cap and TVL?
- As of April 2026, rETH has a market cap of approximately $2.5-3B with roughly 600,000+ ETH deposited across thousands of minipools. This makes Rocket Pool the second-largest liquid staking protocol after Lido, and the largest decentralized liquid staking protocol by validator count (since Lido's operators are more centralized). The rETH/ETH trading pair is active on Uniswap V3, Curve, and most major DEXs.
- Can rETH be used as collateral in DeFi?
- Yes. rETH is accepted as collateral on Aave V3 (Ethereum mainnet and several L2s), Morpho, and Spark. Because rETH is non-rebasing, it integrates cleanly - there's no need for a wstETH wrapper or any conversion step. The loan-to-value ratio for rETH on Aave is typically around 60-70%, meaning if you deposit $1,000 worth of rETH you can borrow $600-700 in stablecoins or other assets while still earning staking yield on your collateral.
- How do rewards flow from validators to rETH holders?
- Every time the beacon chain credits validator rewards to Rocket Pool's staking validators, those rewards flow into the protocol's totalPooledEther. Since rETH supply (totalRethSupply) doesn't change on a reward event, the ratio totalPooledEther totalRethSupply increases. This means rETH holders' tokens are worth more ETH even though their token count hasn't changed. No claim transaction is needed - the value accrual is automatic and continuous as the oracle reports are committed.
- What happens to rETH during a validator slash event?
- When a validator is slashed, the penalty is first covered by burning the node operator's RPL collateral. If the penalty exceeds the operator's RPL bond (a rare, extreme case), the remaining penalty is socialized across all rETH holders - meaning totalPooledEther decreases slightly and the ETH/rETH ratio drops marginally. In practice, Rocket Pool's socialized collateral model means rETH holders are protected by two layers: operator RPL first, then protocol reserves, before any ratio reduction touches stakers.