Hint: You'll have to use a formula instead of a single form to find out how much you owe the IRS. If calculating your income tax ever felt like an unsolved mystery, it's time to unlock the code and ...

The effective tax rate is the percent of income or pre-tax profits that an individual or a corporation pays in taxes.

Understanding how much income tax you need to pay every year is not optional anymore. If you are salaried, self-employed, or earning from multiple sources, guessing your tax liability is a bad idea.

Most forms of income count as taxable — but not all. Here’s how to calculate yours and some ways to reduce your liability. Many, or all, of the products featured on this page are from our advertising ...

When it’s time to calculate your tax bill, knowing your adjusted gross income (AGI) is a crucial first step. If you file your tax return online (or have your tax preparer do it), you’ll need your AGI ...