# Spark Savings Fees Methodology

## 1. Overview

Fees for Spark Savings are measured as the distribution rewards owed by Sky to Spark on referred savings balances. This economic value is generated through referred balances, sUSDS holdings, and USDS assets. Daily accounting snapshots are utilized to capture these rewards, which are denominated in USD and represented by USDS.

## 2. Data sources

- **Off-chain reported data**: Daily accounting snapshots of distribution rewards from the Spark reported rewards dataset, covering Ethereum, Avalanche, Robinhood Chain, and other supported chains

## 3. Step-by-step calculation

### Component A: Spark Savings referral reward extraction

- **Purpose**: Extraction of daily distribution rewards owed to Spark
- **Logic**: Daily accounting snapshots are parsed from the reported rewards dataset. Rows are filtered to include only those where the referral type is classified as a Spark referral. The reward amounts, which are already denominated in USD, are extracted from the daily reward field.
- **Key fields**: `timestamp` (timing), `chain_id` (chain identification), `reward_usd` (reward value in USD), `is_spark_referral` (referral filter)

### Component B: USD normalization and aggregation

- **Purpose**: Aggregation of daily fees and formatting of the final output
- **Logic**: The extracted reward amounts are summed by day, chain, and product. Because the values are already denominated in USD, the standard price conversion step is bypassed. The final daily fee values are mapped to the Spark Savings product and zero-filled for days with no activity to ensure a continuous time series.
- **Key fields**: `timestamp` (timing), `chain_id` (chain identification), `product_id` (product identification), `fees` (aggregated fee value)

*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

Asset management

Lenders deposit funds into Spark and receive interest payments from borrowers (supply-side fees).

Spark is a non-custodial lending protocol built on Ethereum. Spark’s development team Phoenix Labs was founded in early 2023.

SPK tokenholders own and govern the protocol. They currently take a cut of the total interest paid by borrowers (revenue).

Spark Savings

Fees

Fees

Chain breakdown