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Privy’s gas sponsorship engine gives you flexible control over how transaction fees are paid across your wallets. Privy supports two modes:
  • App pays — your app’s gas credits cover fees for all users. Users transact without ever needing to hold ETH or native tokens.
  • User pays — gas fees are covered using the wallet’s USDC or USDT balance, with no ETH required. Your app’s gas credits are not charged.
Ready to get started? See the setup guide.
gas management splash

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Supported networks

App pays sponsorship is available on all of the networks below.
Mainnets:
  • Ethereum
  • Tempo
  • Base
  • Optimism
  • Polygon
  • Arbitrum
  • BNB Smart Chain
  • Unichain
  • Gnosis
  • Plasma
  • Berachain
  • Warden
  • Flow
  • Fluent
  • Edge
  • Monad
  • World Chain
  • Story
  • Ronin
  • MegaETH
  • Ink
Testnets:
  • Sepolia
  • Base Sepolia
  • OP Sepolia
  • Polygon Amoy
  • Arbitrum Sepolia
  • Unichain Sepolia
  • MegaETH Testnet
  • Ronin Saigon
  • Monad Testnet
  • Tempo Testnet
  • Ink Sepolia
  • Fluent Testnet
  • Edge Testnet
  • Robinhood Testnet
Mainnets:
  • Solana
Testnets:
  • Solana Devnet
Want support for more networks? Reach out to us!

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How it works

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Ethereum and EVM chains

Privy leverages EIP-7702 with paymasters to sponsor gas fees:
  • User wallets are upgraded to smart contracts
  • Paymasters cover gas costs automatically
  • Users can transact immediately without holding ETH or native tokens
Native gas sponsorship vs smart walletsOur smart contract wallets offering creates a separate 4337-compatible contract account, where the embedded wallet is the signer.Native gas sponsorship lets you:
  • Sponsor gas for embedded wallets without creating a separate contract account
  • Get set up without managing extra bundler or paymaster providers
  • Use a simpler developer experience — just pass sponsor: true
If you already have users with funds in smart contract wallets, we recommend continuing to use smart contract wallets.

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Solana and SVM chains

Privy uses a fee payer wallet to cover transaction costs:
  • A Privy-managed fee payer wallet funded with SOL covers fees
  • The fee payer updates the transaction’s feePayer field and latest blockhash
  • Users transact without needing to hold SOL

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Calculating gas fees

Privy automatically handles gas fee calculation and optimization. Gas sponsorship includes the actual network gas cost plus a convenience fee for the managed service.
Looking for more granular control over gas pricing? Consider exploring custom setup options.