Margin Interest Calculator
Apply your broker's annual rate to the amount borrowed on margin to find the yearly margin interest.
- Free
- No sign-up
Enter the amount borrowed and rate to see the margin interest.
Worked example
With these example inputs:
- Amount borrowed$20,000
- Annual rate8%
Annual margin interest: $1,600
- The remaining share92.0%
- Amount left$18,400
- If the first figure were 10% higher$1,760
Frequently asked questions
How is margin interest calculated?
Multiply the amount borrowed by the annual margin rate. Borrowing $20,000 at 8% costs $1,600 in margin interest over a year.
Is margin interest charged daily?
Brokers usually accrue it daily on your borrowed balance and bill monthly. This figure is the annual amount, so divide by 365 for an approximate daily cost.