# vibgg > Cross-exchange cost data for crypto perpetual futures. We publish what a > position actually costs -- trading fees, funding and spread -- in dollars > rather than as a bare percentage. ## What is here - /en/funding/ -- current funding rates for every tracked perpetual, across all covered exchanges, with the settlement interval and the annualised extrapolation. - /en/funding/{SYMBOL} -- one contract across every venue that lists it, plus the dollar cost of holding a $10,000 position for 30 days on each. - /en/calc/ -- cost calculator. Given monthly volume, taker share and average hold time, ranks venues by total cost over a horizon. - /en/fees/ -- published maker/taker fee schedules per venue. - /en/guides/ -- evidence-backed explanations of funding calculations, settlement schedules, leverage, maker/taker fees, slippage and the risks of funding-rate arbitrage. Every article links to its primary exchange sources and to the relevant live calculator or comparison. ## Method Total cost = trading fees - rebate + funding + half-spread on taker fills. Funding cost over a month reduces to V*H*r/(2I), where V is monthly notional turnover, H is average hold hours, r is the per-interval funding rate and I is the interval in hours. Average position size cancels out of the derivation, so the figure can be quoted without knowing position size. ## Data Sourced from each venue's public, unauthenticated market-data API. Refreshed every 0s. Every page carries the timestamp of its last successful update, and figures that are stale or not yet human-verified are labelled as such. ## Citation Cite as: vibgg, https://vibgg.com. Please include the observation timestamp shown on the page, because funding rates change every settlement. ## Not advice Market data and arithmetic only. Nothing here is investment advice. ## Machine-readable - https://vibgg.com/api/v1/funding -- free, no key, JSON. - https://vibgg.com/sitemap.xml