DeFi · Beginner

Staking Explained: Earn Passive Crypto Income with ETH & More

April 25, 20267 min readpoly-sim.com

Staking is the act of locking cryptocurrency to support a blockchain network's security and operations, earning rewards in return. Unlike mining, staking requires no specialised hardware — just ETH and technical setup (or a liquid staking service). It's the most straightforward DeFi yield strategy with relatively manageable risk.

How Proof of Stake Staking Works

Ethereum and most modern blockchains use Proof of Stake consensus. Validators lock (stake) 32 ETH as collateral. They're randomly selected to propose and attest to blocks, earning ETH rewards for honest participation. If they act dishonestly (e.g., trying to sign two different blocks), their stake is "slashed" — partially destroyed.

The result: honest validators earn ~3-5% annual ETH rewards. The ETH staked is locked until withdrawal is requested (which can take days to weeks during congestion).

Liquid Staking: Stake Without Locking

Liquid staking protocols (Lido, RocketPool) pool user deposits and operate validators on their behalf, issuing a receipt token (stETH, rETH) that represents your staked ETH plus accrued rewards. These tokens can be traded, used as DeFi collateral, or swapped back to ETH anytime — solving the illiquidity problem of native staking.

How Staking Affects ETH Price

As more ETH is staked, less ETH is available to trade. Combined with EIP-1559 burning transaction fees, Ethereum becomes deflationary during high network activity — less ETH circulating, same demand = higher price per unit. This "ultrasound money" dynamic is a key ETH investment thesis.

💡 Staking for Polymarket Traders

If you hold ETH as collateral for prediction market trading (e.g., to swap to USDC for Polymarket), consider keeping it in stETH between trading periods. Your ETH accrues staking yield (3-5% APY) while waiting to be deployed into prediction markets, improving your overall capital efficiency.

Staking Risks in Detail

Staking is one of the lower-risk DeFi activities, but risks exist and should be clearly understood:

Other Proof-of-Stake Assets Worth Staking

Beyond ETH, several other major Proof-of-Stake assets offer competitive staking yields:

The general rule: higher staking yields often reflect higher token inflation rates (more tokens issued = dilution of existing holders), not superior real returns. Focus on real yield (staking APY minus token inflation) when comparing opportunities.

Exchange Staking vs Self-Custody Staking

Three options for staking, with different tradeoffs:

Tax Implications of Staking

Staking rewards are generally treated as taxable income in most jurisdictions at the market value when received. Key points:

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