The way your income is taxed differs based on whether it’s considered earned or unearned . Read on to learn more.

Knowing your taxable income helps you make smarter choices about deductions, retirement contributions and how much tax to withhold. It can also prevent surprises at tax time. If your finances are more ...

The IRS uses what's called "provisional income" to determine how much of your Social Security benefits are taxable. Your ...

How to Calculate Tax on W-9 Income Form W-9 doesn't usually result in income taxes withheld, but there is an exception. Getting a credit Getting a credit. The good news is ...

To calculate your effective tax rate, you need two numbers: the total amount you paid in taxes and your taxable income for that year. You can find both numbers on your tax return.

To calculate the marginal tax rate on the investment, you'll need to figure out the additional tax on the new income. In this example, $500 will be taxed at 15% and $500 at 25%.

Calculate your taxable income: To figure this out, you take your AGI and subtract all of your qualifying deductions. Or use a tax filing software to calculate the deductions for you.