Validators process transactions and receive fees from users (supply-side fees).

Sui is a smart contract platform for decentralized applications (a blockchain). Sui was founded by Evan Cheng, Sam Blackshear, Adeniyi Abiodun, George Danezis and launched in 2022.

Sui (Mysten Labs) team & investors own and govern the protocol. They currently don’t take a cut of the total transaction fees paid by users (revenue). Sui's investors include a16z, Coinbase Ventures, Electric Capital, etc.

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# Sui Average fees per user (AFPU) Methodology

## 1. Overview

Average fees per user (AFPU) is calculated as the average amount of fees paid by an individual active user on the Sui network over a 24-hour period. The daily cost of transaction execution for participants interacting with the network is reflected by this metric. The value is determined by dividing the total daily fees by the number of unique active users (daily), providing insight into the economic throughput and affordability of the Sui blockchain.

## 2. Data sources

- **Blockchain events**: `computation_cost`, `storage_cost`, and `sender` attributes from transactions, covering Sui
- **Fees**: Derived from the Fees metric
- **Active users (daily)**: Derived from the Active users (daily) metric
- **External data**: End-of-day price feeds for the native SUI asset

## 3. Step-by-step calculation

### Component A: Gas fee extraction

- **Purpose**: Capture the non-refundable cost of network interactions.
- **Logic**: The `computation_cost` and 1% of the `storage_cost` are extracted for every transaction on the Sui network. The remaining 99% of storage costs and all storage rebates are excluded from the calculation to align with accounting standards where only non-refundable execution costs are classified as protocol revenue. All transactions are included in the calculation regardless of execution status, as gas is consumed by both successful and failed transactions.
- **Key fields**: `computation_cost` and `storage_cost` (fee components), `block_timestamp` (timing)

### Component B: Active user identification

- **Purpose**: Identify the unique number of participants on a daily basis.
- **Logic**: The `sender` address is identified for every transaction. Unique addresses are aggregated over a 24-hour UTC window to calculate the count of active users (daily).
- **Key fields**: `sender` (user identifier)

### Component C: Normalization and USD conversion

- **Purpose**: Standardize fee values into a common currency.
- **Logic**: Fees, initially recorded in MIST, are normalized by decimal precision to the native SUI asset. These values are then multiplied by end-of-day price feeds for SUI to calculate the total daily fee volume in USD.
- **Key fields**: `price_usd` (asset price)

### Component D: Final AFPU calculation

- **Purpose**: Combine fees and user counts into the final metric.
- **Logic**: The total daily fee volume in USD is divided by the count of unique active users (daily). The resulting value represents the average USD expenditure per user for that specific day. Missing values are filled with zeros to ensure a continuous time series.
- **Key fields**: `fees` (numerator), `user_dau` (denominator)

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

SuiSUI

Average fees per user (AFPU)

Average fees per user (AFPU)

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