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Lending

JustLend DAO

# JustLend DAO Fees Methodology

## 1. Overview

Fees measure the total value paid by users to use JustLend DAO's applications, which include JustLend Markets and JustLend Staking. For JustLend Markets, fees are represented by the interest accrued on active loans paid by borrowers. For JustLend Staking, fees are represented by the gross staking income, including rent income and voting rewards, generated by staked TRX. This metric shows how much economic value is generated by the protocol's lending and staking activities.

## 2. Data sources

- **Blockchain events**: `AccrueInterest` and `NewReserveFactor` events from `CErc20Delegator` and `CEther` contracts, and `Income` and `ReservesAdded` events from `STRXProxy` contracts, covering Tron
- **External data**: End-of-day price feeds for native and underlying assets

## 3. Step-by-step calculation

### Component A: JustLend Markets interest accrual

- **Purpose**: Capture borrower interest accrued across lending markets
- **Logic**: `AccrueInterest` events are parsed from `CErc20Delegator` and `CEther` contracts to extract the accumulated interest. The interest amounts are normalized by the decimal precision of each market's underlying asset.
- **Key fields**: `interest` (accumulated interest), `market_address` (market identifier)

### Component B: JustLend Staking income extraction

- **Purpose**: Capture gross staking income generated by staked TRX
- **Logic**: `Income` events are parsed from `STRXProxy` contracts to extract the gross staking income, which consists of rent income and claimed voting rewards. The income amounts are normalized by the decimal precision of the underlying TRX asset.
- **Key fields**: `income` (gross staking income), `contract_address` (staking contract identifier)

### Component C: USD conversion and aggregation

- **Purpose**: Normalize all fee components to USD and aggregate them
- **Logic**: Normalized interest and staking income amounts are multiplied by end-of-day asset prices to determine their USD value. The USD values from JustLend Markets and JustLend Staking are summed to calculate the total daily fees. Daily granularity is maintained using UTC day boundaries.

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

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

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