Margin Calculator

Calculate margin trading costs

Stock Price ($)

Number of Shares

Margin Rate (%)

Minimum typically 50% (Reg T). Maintenance margin ~25%.

Result

Enter values and click Calculate to see results.

Written by the EachTools Team

Last updated: January 2026

Margin trading lets you borrow money from your broker to buy more stock than you could with cash alone, amplifying both gains and losses.

Loading calculator...