If your tax rate is 30% then you’ll need to earn $142.85 to receive $100.

100 / .7 = 142.85

And what about the interest lost on that $100 over, say, 10 years? That’s $164.70.

100 * (1 + (0.05/12))^(12*10) = 164.70

Of course, price doesn’t equal value. If a pen brings greater than $164.70 in value, then you’re in the black.

## The point is this

$100 in the bank did not start out as $100. It was $142.85 in earning power.

$100 in the bank not earning interest is $164.70 in missed returns.

Photo by Art Lasovsky on Unsplash