Polygon Staking

Polygon staking is POL delegation on Ethereum mainnet that gives a validator stake weight for Polygon PoS checkpoints while your tokens remain in staking contracts. Polygon PoS uses proof-of-stake consensus: validators stake POL, while delegators assign POL to a validator and share in the rewards that validator earns.

The staking contracts live on Ethereum mainnet, not Polygon PoS, so approval, delegation, claiming, restaking, unbonding, and withdrawal are Ethereum transactions that require ETH for gas. Direct delegation is non-custodial because the validator operates infrastructure but never holds your funds.

Polygon staking works by approving the staking contract, delegating POL to a validator, and letting that validator's stake weight contribute to Bor blocks and Heimdall checkpoints. The Polygon PoS architecture separates Bor, which produces EVM blocks, from Heimdall, which handles consensus and anchors checkpoints to Ethereum.

Approval lets the contract spend your POL; delegation names the validator; Heimdall observes the Ethereum event and updates the validator's stake weight. Successful checkpoints generate rewards distributed pro-rata to stake after the validator's commission is deducted. You can claim rewards, restake them to compound, move stake to a different validator, or unbond entirely.

The three ways to stake POL are direct delegation, custodial exchange staking, and liquid staking.

Direct delegation lets you keep custody, choose your validator, and interact with the protocol contracts from a self-custody wallet on Ethereum; you supply ETH for gas on each action.

Custodial exchange staking puts validator selection and gas handling with the exchange, while its terms determine how your staking position is administered and withdrawn.

Liquid staking issues a transferable receipt token such as sPOL while the underlying POL remains staked, so the receipt can be used elsewhere in DeFi. This route adds a pool and receipt-token layer to the direct staking flow.

Polygon staking rewards are variable POL payments from successful checkpoints, determined by your stake relative to total stake, your validator's checkpoint participation, and its commission. Because those inputs change, there is no fixed rate; the current figures are shown in the staking app.

Rewards must be claimed or restaked manually. Approval, delegation, claim, restake, unbond, and withdrawal are Ethereum transactions, so Ethereum gas fees are separate from the reward calculation. The protocol sets no minimum POL amount for direct delegation, but transaction costs can matter for very small positions.

The main staking risks are defects in smart contracts, wallet compromise or phishing attacks, validator underperformance, governance changes, and POL price movement; liquid staking also adds pool, redemption, and receipt-token depeg exposure. For direct delegation, the key lock-up is an 80-checkpoint unbonding period.

Elapsed time varies with checkpoint production and Ethereum conditions. Your POL earns nothing and cannot move during the window, and you still need a separate claim transaction with gas afterwards. Treat the 80-checkpoint period as a liquidity constraint and use funds you can leave locked through the exit.

To start, use a self-custody wallet on Ethereum mainnet, fund it with POL and enough ETH for several transactions, and keep your recovery phrase offline.

• Open the staking interface and review active validators by commission, checkpoint performance, and active status.
• Submit the approval transaction so the staking contract can spend your POL; POL supports the EIP-2612 permit standard, which can streamline approval where supported.
• Submit the delegation transaction with your chosen amount; Heimdall picks up the Ethereum event and your stake goes live.
• Monitor the position and claim or restake rewards when the transaction cost fits the amount being claimed.

Unstaking direct delegation requires an unbond transaction, an 80-checkpoint wait, and a separate claim transaction.

The unbond transaction starts the period; during it, your POL is locked, illiquid, and earning nothing. When the period completes, the claim transaction withdraws POL to your wallet. Both transactions happen on Ethereum and cost gas, and unclaimed rewards require their own claim action. The unbonding window keeps validator sets stable.