Why Is Exolane Funding Variable but Capped?
Exolane funding is market-driven and changes with long and short imbalance. The ±15% APR number is not a fixed rate or normal charge. It is the hard annualized ceiling enforced on-chain, which means calm markets can run below the cap while stressed markets cannot blow past it.
The cap exists for three reasons: to keep position costs predictable for traders, to prevent "funding squeeze" attacks where whales intentionally skew markets to extract funding from other traders, and to make long-term positions economically viable.
What the 15% cap does not mean
- It is not a fixed funding rate.
- It is not the default or typical daily cost of every position.
- It only binds when market imbalance would otherwise push funding above the ceiling.
How Funding Works on Exolane
- Direction based on skew: When there are more longs than shorts, longs pay shorts. When there are more shorts than longs, shorts pay longs.
- Rate is proportional to imbalance: The more skewed the market, the higher the rate — up to the ±15% APR cap.
- 100% flows between traders: The protocol takes 0% of funding. Every penny paid by one side goes to the other side.
- Continuous accrual: Funding accrues continuously and is settled at each oracle update.
Why the Cap Matters
Predictable Costs
Without a cap, a 30-day position could cost anywhere from 0.1% to 30%+ in funding alone. On Exolane you still pay the live market rate, but you know it cannot exceed 1.25% per month in the worst case.
Protection Against Funding Squeezes
On uncapped exchanges, a whale can open a large directional position to intentionally skew the market, then profit from the extreme funding rate paid by traders on the other side. The cap limits the profitability of this attack.
Viable Long-Term Positions
Many perpetual traders hold positions for days or weeks. Uncapped funding makes this a gamble on costs, not just on price direction. Capped funding makes longer-duration strategies more predictable.
Worst-Case Cost Comparison Example
$10,000 long position held for 30 days during a stressed bullish period where longs are paying shorts:
| Exchange Type | Funding Rate | 30-Day Cost |
|---|---|---|
| Uncapped (moderate skew) | ~50% APR | ~$411 |
| Uncapped (extreme skew) | ~200% APR | ~$1,644 |
| Exolane (worst-case cap) | 15% APR max | ~$123 |
If the live funding rate is 6% or 10% APR, Exolane applies 6% or 10%. The 15% figure matters only when market imbalance would otherwise push funding above the cap.
Other Fee Facts
- Taker fee: 0.02% of notional value on open and close
- Maker fee: 0.00%
- Liquidation penalty: 0.00%
- Interest fee: 0%
- Protocol share of funding: 0% — 100% flows between traders
- Gas per transaction: ~$0.01–$0.05 on Arbitrum
These parameters are verifiable on-chain in the market contracts. See the documentation for contract addresses.
What You Should Verify Yourself
- Check the funding rate parameters in the market contracts on Arbiscan (see contract addresses).
- Monitor current funding rates in the trading interface before opening positions.
- Review the funding rate documentation for the exact formula.
- Compare the live market funding rate on the market page with the hard cap in the docs and contracts. They are related, but they are not the same number.