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 Expenses Methodology

## 1. Overview

Expenses measures the total cost Sui incurs to maintain network operations and security. For Sui, this metric specifically captures token incentives distributed to validators as staking rewards. These rewards, which consist of the stake subsidy and storage fund reinvestment, represent the primary operational expenditure for securing the blockchain and incentivizing supply-side participants.

## 2. Data sources

- **Blockchain events**: `SystemEpochInfoEvent` events from `sui_system_state_inner` contracts on Sui
- **External data**: End-of-day price feeds for the native SUI asset

## 3. Step-by-step calculation

### Component A: Staking reward extraction

- **Purpose**: Captures the total rewards distributed to network validators each epoch to secure the chain.
- **Logic**: `SystemEpochInfoEvent` events are parsed from `sui_system_state_inner` contracts, which are emitted once per epoch. The `total_stake_rewards_distributed` value is extracted from the event metadata, representing the aggregate of the network stake subsidy and reinvested storage fund fees.
- **Key fields**: `total_stake_rewards_distributed` (total rewards per epoch)

### Component B: USD conversion and normalization

- **Purpose**: Normalizes reward amounts and converts them to a standard USD value.
- **Logic**: Reward amounts are normalized by decimal precision. These native values are then multiplied by end-of-day price feeds for the native SUI asset to determine the USD equivalent.

### Component C: Aggregation and finalization

- **Purpose**: Consolidates reward data into a daily expense metric.
- **Logic**: All extracted and converted rewards are aggregated by day according to UTC boundaries. A zero-filling strategy is applied to ensure a continuous time series for days where no events are recorded. This finalized value represents the total token incentives, which are classified as the protocol's expenses.

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

Total project operating and incentive expenses.

SuiSUI

Expenses

Expenses

Competitive landscape