Fees
Pennysia has two products with separate fee structures: the AMM and the Exchange (AoA Protocol).
Exchange
✨ Currently free
The AoA Protocol currently charges no fee on swaps. You pay only the underlying aggregator's execution cost and gas.
A protocol fee will be introduced in the future — and will be lower than major exchanges and aggregators. It will be announced in advance before taking effect.
When routing through aggregators, users pay:
- Aggregator fees — embedded in the quoted rate by each aggregator (not an additional charge)
- Gas — network cost to execute the on-chain transaction
There is no Pennysia markup on top of these at this time.
AMM
Taker Fee
Charged on every trade through Pennysia's AMM pools. Each pool bucket sets its own rate — in a BTC/USDT pool, buying BTC applies the fee set by the bullish-on-BTC bucket, and vice versa. Rate is set by liquidity providers through weighted voting.
| Setting | Value |
|---|---|
| Range | 0.1% – 0.5% |
| Default | 0.3% |
| Voting | Optional — adjustable anytime |
Distribution:
- 80% → Liquidity providers (auto-compounded)
- 20% → Protocol treasury
Maker Fee
Applied when withdrawing liquidity. Same rate structure as the taker fee.
Distribution:
- 80% → LPs in the affected bucket (auto-compounded)
- 20% → Protocol treasury
Liquidity Swap Fee
Applied when switching buckets. Same rate structure as the taker fee.
Distribution:
- 80% → LPs in the affected bucket (auto-compounded)
- 20% → Protocol treasury
Flashloan Fee
Fixed 0.1% — goes entirely to protocol treasury.
Protocol Fee Usage
The 20% AMM protocol fee supports:
- Core team and long-term sustainability
- Security audits and services
- Partner integrations
- Marketing and operations
📖 NOTE
50% of protocol fees go to the Deployer Incentive Program, rewarding projects that launch markets on Pennysia.