Automatically saving a percentage of your salary can be an easy way to fund your retirement.
As a rule of thumb, most financial advisors suggest you save 10% to 15% of your earnings.
Here's a case study.
If you want to retire with $500,000, you'll need to invest about 9% of a salary of $35,000 starting in your 20s. Waiting until you're older will require a larger portion of your pay.
Watch this video to find out how much money you will need to invest to save $500,000 for retirement, broken down by age.
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Disclosure: NBCUniversal and Comcast Ventures are investors in Acorns.