Polygon

Polygon PoS vs zkEVM: Gas Fee Comparison

Updated 2025
Transaction Cost Analysis

How Gas Fees Differ

Both Polygon PoS and Polygon zkEVM offer dramatically lower fees than the Ethereum mainnet. Polygon PoS currently has the lowest average fees, often as low as $0.001–$0.01 per transaction, due to its sidechain architecture which avoids posting transaction data directly to Ethereum. Polygon zkEVM generally has marginally higher fees than PoS because it must post validity proofs and sometimes transaction data to Ethereum L1, though in absolute terms the fees remain negligible for most use cases.

Why zkEVM Costs More

The higher fee on Polygon zkEVM compared to Polygon PoS reflects the cost of generating and verifying zero-knowledge proofs on Ethereum. The computational overhead of ZK proof generation — while continually improving — adds an additional layer of cost not present in the PoS sidechain model. However, this cost buys a qualitatively higher level of security: Ethereum-grade finality with mathematical guarantees rather than validator-stake-based security. For high-value transactions, this trade-off is almost always worthwhile.

Which to Choose Based on Cost

For applications where cost-per-transaction is the primary concern — such as social media platforms built on Lens Protocol, blockchain gaming, or high-frequency micro-transactions — Polygon PoS remains the optimal choice. For DeFi protocols handling large capital flows, institutional use cases, or any application where the cost of a security incident would far outweigh the marginal fee difference, Polygon zkEVM is the recommended network. The Polygon 2.0 roadmap is working to close this fee gap over time as ZK proving technology matures.

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