Maintenance margin tiers that surprise new desks
Why a flat maintenance assumption fails once position notional climbs into the next tier.
Many traders first learn a single maintenance percentage. Venues often raise that rate as notional grows. Smart Crypto Calculator PC only helps if the tier you enter matches the tier you will occupy after the fill.
During Exchange Setup Checks we pull the published schedule and mark the notional breakpoints next to the calculator. Crossing a tier mid-session is a common reason a “safe” buffer evaporates after a scale-in that looked modest on the chart alone.