Here's what you should know about income tax, what it is, how it works, how to calculate it and which states don't have it.

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 ...

Enter household income you received, such as wages, unemployment, interest and dividends. Choose the filing status you use when you file your tax return Input the total of your itemized deductions, ...

Effective tax rate is your average tax rate as a percentage of total income. Marginal tax rate is the tax on your highest dollar earned, not your total income. Historically, top marginal rates have ...