Individual Calculators

A large assortment of practical and easy to use financial calculators.

http://accountant.intuit.com/practice_resources/calculators/

Examples:

Should I rent or buy?

How long will it take to pay off my credit card?

How long will my retirement savings last?

Traditional IRA or a Roth IRA?

How much should I save each month?

Business Financial Ratio Calculators

This calculator is designed to show you ten different financial ratios. Financial ratios are used as indicators that allow you to zero in on areas of your business that may need attention. Areas such as solvency, liquidity, operational efficiency and profitability.

http://www.cpasitesolutions.com/content/calcs/Ratios.html

Joint Committee on Taxation

http://www.jct.gov/