Margin Interest

Margin Interest is a finance utility that helps traders and long-term investors estimate, track, and optimize brokerage margin borrowing costs. Use it as a margin interest calculator, rate tracker, and planning tool for stock and ETF portfolios. Core features - Margin interest calculator with daily accruals, compounding options, and what-if scenarios - Broker rate tracking by balance tier with automatic updates and custom rates - Projections and alerts to monitor utilization, interest drag, and break-even targets Why it stands out - Clear, fast calculations built for real trading workflows - Flexible inputs, multi-account support, and CSV export for reports - Privacy-first design without requiring brokerage linking Keywords: margin interest calculator, finance app, brokerage interest, stock trading tool, portfolio cost analyzer, utilities

- Download and open the app, then set your currency and default broker. - Sign in or continue as a guest and open the Quick Calculator. - Enter your margin balance, borrowing rate, and holding period, then tap Calculate to see daily and monthly interest. - Add brokers and rate tiers or input custom rates, run what-if scenarios, and save or export the report. - Enable alerts to get notified about rate changes or when projected costs exceed your threshold.