Replace complex Excel spreadsheets with a deterministic, broker-agnostic margin calculator. Test scenarios, understand your buffer, and make informed decisions.
Monthly & Annual plans include 7-day free trial • Founders Lifetime Deal available
Excel-equivalent margin calculations with full transparency. Every result is reproducible and testable.
Test price drops and margin bumps before they happen. Understand your risk exposure in seconds.
Understand what changed and why. AI explains your results without ever calculating or giving advice.
Stop relying on mental math or Excel.
Stress-test your high-risk positions against crashes & ratio bumps.
See how complex ETFs like MSTY and ULTY react when their specific maintenance requirements spike.
Know exactly how much capital it takes to pull your buffer back from the red.
Move from "I think I'm safe" to "I know I'm safe" with Robinhood-aligned margin logic.
Add your current holdings and margin details
Apply price drops, margin bumps, or new trades
Instant calculation of your buffer percentage
Get AI explanations and comparisons
Choose your plan and start today • Founders Lifetime Deal: Limited to first 100 users
Need Help Deciding?
Chat with our AI assistant for instant answers about features, pricing, and how to use Margin SIM.