# Acala EVM Fees Methodology

## 1. Overview

Fees for Acala EVM measures the total transaction costs paid by users to execute smart contracts and interact with the Ethereum-compatible layer of the Acala Network. These fees represent the gas costs associated with EVM-based activities and are paid in the network's native asset. This metric is used to evaluate the economic activity generated specifically through the platform's EVM compatibility layer.

## 2. Data sources

- **Blockchain events**: `Executed` events from the `evm` pallet, `Withdraw` and `Deposit` events from the `balances` pallet, and `ClaimAccount` events from the `evmAccounts` pallet, covering Acala
- **External data**: End-of-day price feeds for the native Acala asset (ACA)

## 3. Step-by-step calculation

### Component A: EVM transaction identification and account mapping

- **Purpose**: Associate EVM execution events with the correct fee-paying accounts and transaction records
- **Logic**: Successful EVM transactions are identified by parsing `Executed` events from the `evm` pallet. These transactions are joined with a mapping table derived from `ClaimAccount` events from the `evmAccounts` pallet, which links Parachain accounts to their corresponding EVM addresses. This ensures that fee activity is correctly attributed to the transaction signers on the EVM layer
- **Key fields**: `extrinsic_id`, `signer_address`, `evm_account`, `parachain_account`

### Component B: Net transaction fee extraction

- **Purpose**: Determine the actual gas fee paid per transaction by analyzing balance changes
- **Logic**: Fees are calculated by aggregating balance activity from the `balances` pallet for each identified EVM extrinsic. `Withdraw` and `Deposit` events are matched to the transaction via the extrinsic ID. The final transaction fee is calculated as the sum of all withdrawals minus any deposits recorded for the same transaction, representing the net amount of the native asset consumed for gas
- **Key fields**: `transaction_fee`, `event_method`, `extrinsic_id`

### Component C: USD conversion and daily aggregation

- **Purpose**: Normalize fee amounts and convert them to USD for standardized reporting
- **Logic**: Fee amounts are normalized by the native asset's decimal precision of 12. These normalized values are then multiplied by end-of-day price feeds for the native ACA asset. The resulting USD values are aggregated by day using UTC boundaries
- **Key fields**: `block_timestamp`, `transaction_fee`, `price_usd`

*This methodology was automatically generated by Token Terminal's methodology analyzer.*

Total value users pay to use a protocol (gross fees, user-paid fees).

Fees

Blockchains (L2)

Collators aggregate parachain transactions block candidates and producing state transition proofs for validators based on those blocks.

Acala is a specialized stablecoin and liquidity blockchain powered by Polkadot Relay chain.

ACA holders own and govern the protocol. Acala’s investors include Pantera Capital, Coinbase Ventures, and Polychain Capital.

Acala EVM

Archived

Fees

Fees

Chain breakdown