Calculators and Conversion Tables
Amortization calculator—Also a mortgage calculator that lets you keep recalculating based on a higher down-payment or added amounts to monthly payments.
Bonus calculator—aggregate method. Uses regular federal withholding rates. Use if your state allows the aggregate method. Free registration required.
Bonus calculator—percent method. Uses supplemental withholding rates. Use if your state does not have a supplemental withholding rate and permits the percent method. Free registration required.
Calendar calculator—generate a calendar for any month.
Car lease payment calculator—lays out the future costs of an auto lease.
CD calculator—shows payout at maturity based on initial deposit, interest, term and period of compounding (daily, weekly, monthly, etc.).
Currency converter—converts any currency into any other.
Currency converter—converts any currency into any other.
Financial Calculators—Any financial calculator you need.
Gross-up calculator—when you want an employee's bonus to include payment of the taxes the employee would have had to pay on the bonus. Free registration required.
Loan calculator—calculates loan payment amounts; savings and annuity amounts and future value.
Mathematical functions—from basic to PhD level.
Measurement converter—converts any measure to any other.
Monthly compounding calculator—takes an amount and compounds it monthly over a fixed period at a fixed annual yield. Allows added monthly contributions.
Monthly mortgage payment table calculator—generates a table of monthly payments.
Number of days calculator—calculate the number of days between any two dates.
Roth IRA—conversion calculator.
Time zones—zone-by-zone times worldwide.
Tip tax calculator—if your employees receive tips. Free registration required.
Agriculture—IRS rules, regulations and resources
Automotive—IRS rules, regulations and resources
Bartering Tax Center—IRS rules, regulations and resources
Construction—IRS rules, regulations and resources
Entertainment—IRS rules, regulations and resources
Gas Retailers—IRS rules, regulations and resources
Manufacturing—IRS rules, regulations and resources
Money Services Business (MSB) Information Center—IRS rules, regulations and resources
Real Estate—IRS rules, regulations and resources
Restaurants—IRS rules, regulations and resources
Tax professionals—IRS rules, regulations and resources