# Flying Tulip Lend Fees Supply Side Methodology

## 1. Overview

Fees Supply Side measures the total interest distributed to lenders by Flying Tulip Lend, representing the Flying Tulip Yield earned by capital suppliers within the protocol. Because the reserve factor is set to zero on-chain (confirmed by the Flying Tulip team), 100% of borrower interest flows to lenders with no protocol retention. Fees are denominated in FT (the Flying Tulip native asset) and converted to USD. This metric is exclusive to Flying Tulip Lend — no supply-side fee stream exists for Flying Tulip Yield or Flying Tulip USD, as those products retain 100% of generated fees as protocol revenue.

## 2. Data sources

- **Blockchain events**: `EpochSettled` events from `PositionsManager` contracts, covering Ethereum and Sonic
- **External data**: End-of-day price feeds for the FT asset

## 3. Step-by-step calculation

### Component A: Interest distribution event parsing

- **Purpose**: Capture each epoch's interest payout to lenders as it occurs on-chain
- **Logic**: `EpochSettled` events from `PositionsManager` contracts are parsed on both Ethereum and Sonic. The `rewardAmount` field from each event represents the full interest distribution for that epoch, denominated in FT. Only non-removed events are included. Records are grouped by day, chain, and asset, with per-day totals summed across all epoch settlements within each UTC day.
- **Key fields**: `block_timestamp` (event timing), `rewardAmount` (FT-denominated interest distributed to lenders)

### Component B: USD conversion

- **Purpose**: Normalize FT-denominated reward amounts to USD for cross-asset comparability
- **Logic**: Daily FT reward totals are joined to asset metadata to retrieve decimal precision, and amounts are normalized by decimal precision. Normalized amounts are then multiplied by end-of-day FT price feeds, matched on timestamp, chain, and asset address, to produce USD-denominated supply-side fees.

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

Portion of fees distributed to service providers or supply-side participants.

Supply-side fees

Lending

Users deposit single assets into wrapper contracts. Flying Tulip deploys these deposits into automated yield strategies (e.g., Aave V3) across Ethereum, Sonic, BNB Chain, Avalanche, and Base, maximizing capital efficiency.

Flying Tulip is a multi-chain yield aggregation protocol that pools user deposits into wrapper contracts and deploys them into automated yield strategies. The protocol supports assets including USDC, wETH, USDT, USDS, USDTb, and USDe, and uses an omnichain FT token to align incentives across its five supported networks.

FT tokenholders own and govern the Flying Tulip protocol. Flying Tulip is a yield aggregation protocol backed by partnerships with major DeFi protocols.

Flying Tulip Lend

Supply-side fees

Supply-side fees

Chain breakdown