I often tell people that I married someone with an advanced degree in mathematics so that I would not have to do math anymore. For those of you who are not quite as lucky as I am, Bootstrapper has a list of 100 Financial Calculators to help you calculate everything from your profit margin to your effective tax rate. This is a great resource to bookmark and keep close at hand in the event you need to perform a quick calculation.

Hat tip to Build A Solo Practice for the link.

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