Tax Return Estimator

AGI is your total gross income minus specific deductions called 'above-the-line' adjustments, such as IRA contributions and student loan interest. It's a key figure on your tax return because many credits and deductions are based on your AGI. Your AGI is calculated before you apply the standard or itemized deduction.

You'll need your W-2 forms showing wages and federal tax withheld, details on any other income sources, information about dependents, and records of any deductions or credits you plan to claim. Having last year's tax return nearby can also be helpful as a reference.

This estimator provides an approximation based on the information you enter. Actual results can vary due to additional income sources, state taxes, changes in tax law, tax credits you may qualify for, or deductions not accounted for in the estimate. Always consult a tax professional for precise calculations.

The US uses a progressive tax bracket system, meaning different portions of your income are taxed at different rates. Your 'marginal rate' is the rate applied to your last dollar of income, while your 'effective rate' is the average rate you pay across all your income — which is typically lower than your marginal rate.

Tax credits directly reduce the amount of tax you owe dollar-for-dollar, while deductions reduce your taxable income. For example, a $1,000 tax credit saves you exactly $1,000 in taxes, whereas a $1,000 deduction saves you the deduction multiplied by your marginal tax rate. Credits are generally more valuable than equivalent deductions.

The standard deduction is a flat amount you can subtract from your income without itemizing individual expenses. For 2025, it's $15,000 for single filers and $30,000 for married filing jointly. You should itemize only if your qualifying expenses (mortgage interest, state taxes, charitable donations, etc.) exceed the standard deduction for your filing status.

The IRS typically issues refunds within 21 days of accepting an electronically filed return. Paper returns take longer — usually 6 to 8 weeks. You can check your refund status using the IRS 'Where's My Refund?' tool at IRS.gov. Filing early and choosing direct deposit speeds up the process.

If you owe taxes, you can reduce the amount by maximizing deductible contributions (like a Traditional IRA), identifying credits you may have missed, or adjusting your W-4 withholding for the next tax year. If you owe a large amount, consider making estimated quarterly tax payments to avoid underpayment penalties in the future.