The Core Concept: Capturing the Spread
Cross-exchange funding arbitrage exploits the price difference between the same asset’s perpetual futures on different exchanges. While perpetual prices typically stay close to spot, they can diverge significantly during high volatility, creating profitable opportunities.
Understanding the Mechanics
When Exchange A has a funding rate of 0.15% and Exchange B has -0.05%, the differential is 0.20%. As an arbitrageur, you:
- Go long on Exchange A (you receive funding)
- Go short on Exchange B (you pay funding)
- Your net gain = 0.20% per 8-hour period minus fees
APR Calculations for Different Scenarios
| Spread | Daily Return | Monthly APR | Annual APR |
|---|---|---|---|
| 0.10% | 0.30% | 9% | 180% |
| 0.20% | 0.60% | 18% | 360% |
| 0.30% | 0.90% | 27% | 540% |
After typical fees (0.04% taker, 0.02% maker per side), subtract approximately 0.12% per period from gross returns.
Real-World Execution Tips
Timing: Funding occurs every 8 hours (typically at 00:00, 08:00, and 16:00 UTC). Execute trades 5 minutes before funding for best pricing.
Position Entry: Enter the short side first on the exchange with lower liquidity to minimize market impact, then enter the long side.
Exit Strategy: Close both positions when the spread narrows below your fee threshold, or when one position approaches liquidation.
Getting Started
The minimum recommended capital is $1,000-2,000 to make arbitrage worthwhile after fees. Most professional traders use $10,000+ for significant returns. Start with paper trades to test your execution before risking real capital.