Income Tax
10 articles in Income Tax
Withholding Tax: What It Is, How It Works, and How to Adjust It
Withholding tax is money your employer deducts from your paycheck for the IRS. Learn how it works, how to adjust your W-4, and how to avoid surprises.
Federal Income Tax: How It Works, Rates, and What You Owe
See the 2025 and 2026 federal income tax brackets for all filing statuses, with worked examples showing exactly how much you owe.
Tax Brackets Explained: How Your Income Gets Taxed
Tax brackets don't tax all your income at one rate. Learn how progressive taxation actually works, with examples and common myths debunked.
Marginal vs. Effective Tax Rate: What You Actually Pay
Your tax bracket rate and the rate you actually pay are two different numbers. Learn the difference between marginal and effective tax rates.
OASDI Tax: What It Is and How It Differs from FICA
OASDI tax is the Social Security portion of FICA. Learn the 2026 rate (6.2%), the $184,500 wage cap, and how it compares to the full FICA tax.
Who Has to File Taxes? Income Thresholds and Filing Requirements
Do you have to file a federal tax return? Filing requirements depend on income, age, filing status, and special situations. Here's who must file in 2026.
State Income Tax: How All 50 States Tax Your Income
See how all 50 states tax income, from California's 13.3% top rate to nine states with no income tax. Includes rates, structures, and planning tips.
FICA Tax: Social Security and Medicare Withholding Explained
FICA tax takes 7.65% of your paycheck for Social Security and Medicare. See 2026 rates, wage caps, and how the math works for employees and freelancers.
Payroll Tax vs. Income Tax: What's the Difference?
Payroll taxes and income taxes both come from your paycheck, but they work differently. See rates, who pays, and how they compare side by side.
How Much Do You Have to Make to File Taxes?
The minimum income to file a 2025 federal tax return is $15,750 for single filers under 65. See all thresholds by status, age, and dependent rules.