What earned income tax is and who pays it
Earned income tax is the federal tax you pay on wages, salaries, tips, and self-employment income. It funds Social Security and Medicare. If you work for an employer, your paycheck already has this tax withheld—your employer sends it to the IRS on your behalf. If you're self-employed, you pay it yourself when you file your tax return.
The amount you owe depends on how much you earned and your tax bracket. The federal government uses a progressive system: you pay a higher percentage on income above certain thresholds, not on all your income. For 2024, federal income tax brackets range from 10% to 37%, but most working people fall in the 12% to 24% range.
Your state may also charge earned income tax. Some states have no income tax at all (Alaska, Florida, Nevada, South Dakota, Tennessee, Texas, Washington, and Wyoming). Others charge between 1% and 13% depending on your income level. A few states tax only specific types of income, like dividends or capital gains.
Key Takeaways
- Earned income tax is withheld from your paycheck by your employer and sent to the IRS, or you pay it yourself if self-employed.
- Federal tax brackets are progressive—you pay higher rates only on income above certain thresholds, not on your entire income.
- Your actual tax bill depends on your filing status, number of dependents, deductions, and credits you claim.
- State income tax rates vary from 0% to over 13%, depending on where you live and your income level.
- You may owe more tax at filing time if too little was withheld, or receive a refund if too much was withheld.
How withholding works on your paycheck
When you start a job, you fill out a W-4 form (Employee's Withholding Certificate). This tells your employer how much federal income tax to remove from each paycheck. The more allowances or dependents you claim, the less is withheld. The fewer you claim, the more is withheld.
Your employer uses IRS tables to calculate the withholding based on your pay frequency (weekly, biweekly, monthly), your filing status, and what you entered on the W-4. This is an estimate—it's designed to get you close to what you'll actually owe, but it's rarely exact.
You can adjust your withholding at any time by submitting a new W-4 to your employer's payroll department. If you're getting a large refund every year, you're having too much withheld and could adjust it to take home more pay. If you owe money at tax time, you're having too little withheld and should adjust it to avoid a bill.
Self-employment tax and how it differs
If you're self-employed (a freelancer, contractor, or small business owner), you don't have an employer to withhold tax for you. Instead, you pay self-employment tax when you file your return, usually by April 15 of the following year. You may also need to make quarterly estimated tax payments if you expect to owe $1,000 or more.
Self-employment tax covers both the employee and employer portions of Social Security and Medicare taxes. As an employee, your employer pays half and you pay half. As self-employed, you pay both halves—15.3% of your net self-employment income (12.4% for Social Security, 2.9% for Medicare). You can deduct half of this as a business expense on your return.
You can reduce your self-employment tax by deducting legitimate business expenses—home office, equipment, supplies, vehicle mileage, professional services. The more you deduct, the lower your taxable income and the less self-employment tax you owe. Keep receipts and records of all business expenses.
Tax brackets and how they actually work
Federal tax brackets confuse many people because they think you pay one rate on all your income. That's not how it works. The brackets are marginal—you pay the lower rate on the lower portion of your income and the higher rate only on the portion that falls into the higher bracket.
For example, in 2024, the 12% bracket for single filers goes from $11,601 to $47,150. The 22% bracket goes from $47,151 to $100,525. If you earned $60,000, you don't pay 22% on all of it. You pay 10% on the first $11,600, then 12% on the next $35,550, then 22% only on the remaining $12,850. Your effective tax rate (what you actually pay as a percentage of total income) is much lower than your marginal rate (the rate on your last dollar earned).
Your filing status affects your brackets. Single filers, married filing jointly, married filing separately, and head of household all have different bracket ranges. Married filing jointly typically has wider brackets, which is why some couples see a "marriage penalty" if both earn significant income.
Deductions and credits that reduce what you owe
After you calculate your income, you can reduce it with either the standard deduction or itemized deductions. The standard deduction is a flat amount set by the IRS each year—for 2024, it's $14,600 for single filers and $29,200 for married filing jointly. Most people use the standard deduction because it's simpler and larger than what they could itemize.
If you own a home with a mortgage, pay significant state and local taxes, or have large charitable donations, you might benefit from itemizing instead. You list deductions like mortgage interest, property taxes, state income taxes (up to $10,000), and charitable contributions. You can only deduct one or the other, not both.
Tax credits are different from deductions—they reduce your tax bill dollar for dollar. The Earned Income Tax Credit (EITC) is a major credit for lower-income workers. The Child Tax Credit gives $2,000 per may have access to child under 17. The American Opportunity Credit helps with education costs. Credits are more valuable than deductions because they directly lower what you owe.
What happens if you owe more or get a refund
When you file your return, the IRS compares what was withheld from your paychecks (or what you paid in estimated taxes) to what you actually owe based on your final income, deductions, and credits. If you had too much withheld, you get a refund. If you had too little, you owe the difference.
If you owe money, you can pay it in full by the tax important date (usually April 15), or you can set up a payment plan with the IRS. The IRS charges interest and penalties on unpaid taxes, so paying as soon as you can is cheaper. If you can't pay in full, a payment plan still costs less than waiting.
If you're getting a large refund every year, that means you're lending the government money interest-free. Adjusting your W-4 to have less withheld lets you take home more pay throughout the year instead of waiting for a refund. Use the IRS W-4 calculator on irs.gov to estimate the right withholding for your situation.
State and local income tax variations
Nine states have no state income tax: Alaska, Florida, Nevada, South Dakota, Tennessee, Texas, Washington, Wyoming, and New Hampshire (which taxes only dividends and interest, not wages). If you live in one of these states, you only owe federal income tax on your wages.
Most other states tax earned income at rates between 1% and 13%. Some states have a flat tax rate (the same percentage for everyone), while others use brackets similar to federal tax. A few states offer credits or deductions that lower your state tax bill. Your state tax return is usually filed at the same time as your federal return.
If you work in one state but live in another, you may owe tax to both. Most states have reciprocal agreements or credits to prevent double taxation, but the rules vary. If this applies to you, check your state's tax agency website or talk to a tax professional about how to file correctly.
Frequently Asked Questions
Why do I owe money at tax time if my employer was withholding?
Withholding is an estimate based on the W-4 you filled out. If your situation changed—you got married, had a child, took a second job, or earned more than expected—the withholding may not match what you actually owe. You can adjust your W-4 at any time to fix this for future paychecks.
Is the Earned Income Tax Credit the same as a refund?
The EITC is a tax credit that reduces what you owe. If the credit is larger than your tax bill, the IRS sends you the difference as a refund. You must have earned income to claim it, and income limits explore. Check irs.gov to see if you may have access to based on your income and family situation.
Do I have to file a return if I didn't earn much?
If your income is below the standard deduction for your filing status, you don't have to file. However, if you had taxes withheld, filing gets you a refund. If you're self-employed, you must file if you earned $400 or more in net self-employment income, even if your total income is low.
What's the difference between federal and state income tax?
Federal income tax goes to the U.S. government and funds national programs. State income tax goes to your state and funds state programs. You file separate returns for each. Some states have no income tax, so you only file federal. Others have both, and you file both returns.
Can I deduct my student loan interest from earned income tax?
Yes, you can deduct up to $2,500 in student loan interest paid during the year, even if you don't itemize deductions. This is a deduction from your income, not a credit. Income limits explore—if you earn over a certain amount, the deduction phases out. Check the IRS website for current income limits.