Your federal income tax amount appears in several places depending on what you’re looking for: on your most recent Form 1040 (line 24 shows your total tax), on your W-2 from each employer (Box 2 shows what was withheld), or through your IRS online account if you need historical records. Which source you need depends on whether you want to know what you owed, what was withheld from your paychecks, or what you still owe the IRS right now.
Find Your Tax on Form 1040
If you’ve already filed a return, your Form 1040 is the most complete picture of your federal income tax for that year. Line 24 shows your total tax, which is the full amount you owed before accounting for any payments or credits applied during the year. Line 33 shows your total payments, including withholding from paychecks and estimated tax payments you made. The difference between those two numbers is either your refund or the amount you still owed when you filed.
If you used tax software, you can usually log back into that account to pull up prior returns. If you filed on paper, check your personal records for a copy.
Check Your W-2 for Tax Withheld
Your W-2 tells you how much federal income tax your employer pulled from your paychecks over the course of the year. Look at Box 2, labeled “Federal income tax withheld.” If you had multiple jobs, you’ll have a separate W-2 from each employer, and you’ll need to add the Box 2 amounts together to get your total withholding. This number flows onto your Form 1040 at line 25a when you file.
Keep in mind that the amount withheld is not necessarily the same as the tax you actually owe. Withholding is an estimate based on the information you provided on your W-4 form. Your actual tax liability depends on your full income picture, deductions, and credits, which only become clear when you file your return.
Use Your IRS Online Account
The IRS offers a free online account at irs.gov that lets you view your tax information directly. Once you register and verify your identity, you can see balances owed by tax year, up to five years of payment history (including estimated tax payments), and any pending or scheduled payments. If you owe money, you can also set up or manage a payment plan from the same dashboard.
This is the fastest way to check whether you have an outstanding balance or to confirm that a payment went through. Registration requires identity verification through ID.me, which involves uploading a photo ID and taking a selfie, or completing a video call.
Request a Transcript From the IRS
If you need an official record of your tax information, whether for a mortgage application, financial aid, or your own records, IRS transcripts are the way to get it. There are several types:
- Tax return transcript: Shows most line items from your original return as filed. Available for the current year and three prior years. This is what most lenders request for mortgage applications.
- Tax account transcript: Shows basic data like filing status, taxable income, and payment types, plus any changes made after you filed. Available online for the current year and nine prior years.
- Record of account transcript: Combines both of the above into one document. Available for the current year and three prior years.
- Wage and income transcript: Shows data from W-2s, 1099s, and other information returns the IRS received. Available for the current year and nine prior years, though it’s limited to roughly 85 income documents.
You can view, print, or download transcripts through your IRS online account. If you can’t register online, you can order a tax return transcript or tax account transcript by calling 800-908-9946 or by mailing Form 4506-T. Mailed transcripts take 5 to 10 calendar days to arrive. A transcript is not a photocopy of your return. If you need an exact copy, you’ll need to submit Form 4506 instead.
Calculate Your Tax Using Current Brackets
If you haven’t filed yet and want to estimate what you’ll owe, federal income tax is calculated using a progressive bracket system. You don’t pay one flat rate on all your income. Instead, different portions of your taxable income (your income after deductions) are taxed at increasing rates. For 2025, the brackets for single filers are:
- 10% on income up to $11,925
- 12% on income from $11,926 to $48,475
- 22% on income from $48,476 to $103,350
- 24% on income from $103,351 to $197,300
- 32% on income from $197,301 to $250,525
- 35% on income from $250,526 to $626,350
- 37% on income above $626,350
So if you’re a single filer with $60,000 in taxable income, you’d pay 10% on the first $11,925, 12% on the next chunk up to $48,475, and 22% on the remaining amount up to $60,000. Your total federal tax in that scenario would be roughly $8,370, giving you an effective rate of about 14%, well below your top bracket of 22%.
The thresholds are higher for married couples filing jointly. For example, the 10% bracket covers income up to $23,850, and the 22% bracket doesn’t kick in until $96,951. Head of household filers fall in between, with the 10% bracket covering income up to $17,000.
These brackets apply only to federal income tax. Social Security and Medicare taxes (collectively called FICA) are separate, as are any state income taxes. To estimate your full tax picture, you’ll need to account for all of these.