Saving for retirement traditionally takes more than 40 years of work.
Given that kind of time, investing a little extra cash every month can pay off exponentially in the stock market.
Check out this video to see how much you will need to start saving every month to retire with $500,000, $750,000 or $1 million, broken down by age group.
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How mutual funds work — the $18.7 trillion industry fueling retirement in the U.S.
Disclosure: NBCUniversal and Comcast Ventures are investors in Acorns.
