Hi All,

I tried figuring this out on my own, but all the internet investment calculators give wildly different results, so hopefully you can help!

I have a job that pays weekly and with each paycheck I deposit $500 into Betterment every Friday. Since Betterment charges no fees to deposit and invest funds, I was wondering if it would be worth my wild to, rather than deposit the $500 as one lump sum weekly, set-up auto-deposits for each day of the week of $100.00.

The static criteria I'm using are: Initial deposit = $5,000.00, Interest Rate = 7.9%, Compounded Quarterly, saving for 10 years.

Investing $500/week yields $401,424.00

Investing $100/daily yields $559,000.00

That's a huge difference! I can't tell if the calculator is assuming a 7-day week...if that's the case then it's artificially increasing my contributions.

But, could cost-averaging really increase returns this much?! Thoughts?

Thanks!