How We Calculate Trading Costs
Transparency is our foundation. Here's exactly how we collect data, calculate costs, and present information to help you make informed trading decisions.
Real-Time Data Sources
We connect directly to exchange WebSocket feeds to capture live order book data. Price updates arrive 3 times per second, ensuring you always see current market conditions. Our infrastructure monitors 20+ exchanges simultaneously.
Cost Calculation
Total trading cost = Spread Cost + Trading Fee + Fixed Fees. We calculate the spread from the best bid and ask prices in real-time. Trading fees are sourced from official exchange documentation and verified monthly. For market orders, we also factor in slippage based on order book depth.
Order Book Depth Analysis
We analyze the cumulative volume at each price level to determine how your order size affects execution price. Large orders that exceed available liquidity will "walk the book," resulting in worse average prices. Our depth metrics help you understand this impact.
Historical Statistics
We collect tick-level data 24/7 and compute statistical measures including median spreads, percentiles (P5, P25, P75, P95), and volatility metrics. Historical data helps you understand typical market conditions beyond the current snapshot.
Transparency First
Unlike affiliate sites that earn commissions, we have no financial relationship with any exchange. Our goal is to show you the true cost of trading, including hidden costs in the spread that many "zero fee" platforms rely on.
Data Freshness
Live data updates via WebSocket connection (3x/second when connected). Historical statistics are recomputed daily at 00:00 UTC. Fee schedules are reviewed and updated monthly or when exchanges announce changes.
Core Formula
Total Cost = (Ask - Bid) / Ask × 100 + Taker Fee % + Fixed FeeFor limit orders that don't cross the spread, cost = Maker Fee % + Fixed Fee
Last updated: 2026-02-12