For a disciplined investor, margin should always be used in moderation and only when necessary. When possible, try not to use more than 10% of your asset value as margin and draw a line at 30%. It is also a great idea to use brokers like TD Ameritrade that have cheap margin interest rates.

What is a good margin equity percentage?

When you purchase stock on margin, you must maintain a balanced ratio of margin debt to equity of at least 50 percent.

Should I use margin for long term investing?

Also, margin rates are often higher than rates on other secured loans like second mortgages and car loans, and most experts say margin loans are definitely not for long-term investments. "Both college funding and retirement savings should be accumulated through long term investing," says Michael P.