Transaction Fees

Overview

Every transaction on the Solana blockchain requires a small network fee, similar to credit card processing fees but much smaller. Fee configuration is a required parameter for all transaction requests in the Squads API - transactions will fail if fee configuration is not provided. On Squads APIs, you can:

Pay fees in USDC, USDT, or SOL
View exact fee amounts before confirming
Configure which signer pays the fees or pay the fees from the Smart Account

Fee Configuration

Fee configuration must be included in every transaction request. Here’s how to specify it:

USDC

The simplest way to pay fees. Most customers use USDC.

{
  "fee_config": {
    "currency": "usdc",
    "payer_address": "5iWt8..."
  }
  // ... other request parameters ...
}

SOL

Solana’s native currency.

{
  "fee_config": {
    "currency": "sol",
    "payer_address": "5iWt8..."
  }
  // ... other request parameters ...
}

Fee Response

After processing a transaction request, you’ll receive detailed fee information:

{
  "fee": {
    "amount": "1000000", // Base unit amount (e.g., USDC with 6 decimals)
    "amount_decimal": "1.0", // Human-readable amount
    "currency": "usdc", // The currency used for the fee
    "sol_equivalent": {
      "amount": "5000", // Amount in lamports (SOL's smallest unit)
      "amount_decimal": "0.000005" // Human-readable SOL amount
    }
  }
}

Technical Details

For developers who need them, here are the full currency specifications:

USDC

Currency Code: usdc
Mint Address: EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v
Decimals: 6

USDT

Currency Code: usdt
Mint Address: Es9vMFrzaCERmJfrF4H2FYD4KCoNkY11McCe8BenwNYB
Decimals: 6

SOL

Currency Code: sol
Mint Addresses:
- 11111111111111111111111111111111
- So11111111111111111111111111111111111111112
Decimals: 9

Common Questions

Yes, you can sponsor fees for users by setting the payer_address in the fee_config to your address.

Which currency should I use?

Most customers use USDC for simplicity. However, both SOL and USDC options are fully supported and you can choose based on your needs.

⌘I

compliance

accounts

external-accounts

kyc

passkeys

payments

proposals

spending-limits

standing-orders

transactions

virtual-accounts

auth

trade

Transaction Fees

Overview

Fee Configuration

USDC

SOL

Fee Response

Technical Details

USDC

USDT

SOL

Common Questions

Which currency should I use?

​Overview

​Fee Configuration

​USDC

​SOL

​Fee Response

​Technical Details

​USDC

​USDT

​SOL

​Common Questions

​Can I sponsor fees for users?

​Which currency should I use?

Overview

Fee Configuration

USDC

SOL

Fee Response

Technical Details

USDC

USDT

SOL

Common Questions

Can I sponsor fees for users?

Which currency should I use?