Here's How Much to Invest Each Month if You Want $100K by Age 30

Your 20s aren't typically a time when you're flush with cash. Many 20-somethings survive on low salaries or a hodgepodge of part-time and freelance gigs. Student loans and credit card debt only make things tougher. But if you do have cash to spare, you can amass a six-figure fortune a lot faster than you think.

Suppose you started investing on your 22nd birthday. You earn annual returns of 7% before you take inflation into account, which is a pretty realistic target based on S&P 500 index average returns. By investing $780 a month, you'd have $100,000 by the time you blew out your 30th birthday candles.

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Source Fool.com