How to sponsor fees on Solana

Once you’ve created a smart wallet on Solana, sponsor Solana transaction fees with your Smart Wallets to enable users to transact without holding SOL. Powered by Smart Wallets, this removes a major barrier to entry for new users of your app.

Implement sponsorship either globally (applying to all transactions) or on a per-transaction basis with policies defining what you want to sponsor for users:

• Fees cover the cost of executing transactions.
• Rent is required to store data on-chain.
  • We support rent sponsorship for createAccount and createAssociatedTokenAccount programs. If you need support for sponsoring rent in custom programs, please contact us at [email protected].

See our recommendations for gas manager spending.

Create a Gas Manager policy

A gas manager policy defines which transactions are eligible for sponsorship. You can customize the policy to limit the amount of money or the number of transactions that can be sponsored.

You can create a policy in the Gas Manager dashboard.

Now you should have a Gas policy created with a policy id you can use to sponsor fees and rent for your users.

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import { cookieStorage, createConfig } from "@account-kit/react";
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import { Connection } from "@solana/web3.js";
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createConfig({
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  ...otherConfig
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  solana: {
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    connection: new Connection(
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      "https://solana-devnet.g.alchemy.com/v2/<API_KEY>",
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      {
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        wsEndpoint: "wss://api.devnet.solana.com",
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        commitment: "confirmed",
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      }
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    ),
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    policyId: "<PolicyId>"
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  }
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}

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import { useSolanaTransaction } from "@account-kit/react";
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import { Connection, PublicKey, SystemProgram } from "@solana/web3.js";
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function MyComponent() {
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  const policyId = "<YourPolicyId>";
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  const { sendTransaction, signer } = useSolanaTransaction({
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    policyId,
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  });
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  if (!signer) {
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    return <div>Loading signer...</div>;
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  }
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  return (
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    <button
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      onClick={() =>
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        sendTransaction({
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          transfer: {
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            toAddress: "<ToAddress>",
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            amount: 1000000,
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          },
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        })
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      }
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    >
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      Send Sponsored Transaction
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    </button>
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  );
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}