Understand Your Taxes Before Tax Season

How U.S. taxes work

Most employees encounter taxes in two places: throughout the year on each paycheck and when they file a federal tax return. Employers generally withhold federal income tax from employee paychecks and send those amounts to the IRS.

At tax filing time, your tax return compares your actual tax liability with the amounts already paid through withholding and other payments. Depending on the result, you may receive a refund or have additional tax to pay.

Tax topics to understand

Start with the concept that matches your question. These topics cover the parts of the U.S. tax system most relevant to employees, households, and everyday personal finances.

What is federal income tax?

Federal income tax is a tax imposed by the U.S. federal government on taxable income. For employees, it is generally collected throughout the year through withholding from paychecks.

The amount of federal income tax you ultimately owe depends on your taxable income, filing status, deductions, credits, and other applicable rules.

2026 federal income tax brackets

Federal income tax uses progressive marginal rates. For tax year 2026, the federal individual income tax rates are 10%, 12%, 22%, 24%, 32%, 35%, and 37%.

The table below shows the 2026 brackets for three common filing statuses. These are based on taxable income, not simply your gross salary. :contentReference[oaicite:1]{index=1}

These are 2026 federal marginal brackets. State and local income taxes can use different rules and rates.

Does moving into a higher bracket tax all your income at that rate?

No. Federal income tax brackets are marginal. Different portions of your taxable income are taxed at different rates. Reaching a higher bracket does not mean your entire taxable income suddenly becomes subject to that higher rate.

Tax deductions

A tax deduction reduces the amount of income subject to tax. The IRS describes the standard deduction as a set amount that most taxpayers can subtract based on filing status.

Taxpayers may instead itemize certain qualifying expenses when doing so produces a larger deduction. The appropriate choice depends on the taxpayer's circumstances. :contentReference[oaicite:2]{index=2}

2026 standard deduction

The IRS lists these amounts for tax year 2026. Additional rules can apply to taxpayers who are older, blind, dependents, or who have other circumstances. :contentReference[oaicite:3]{index=3}

Tax credits

A tax credit works differently from a deduction. A credit directly reduces the amount of tax owed, while a deduction reduces taxable income.

Some tax credits are refundable, which means a qualifying taxpayer may receive a refund even when the credit is larger than the remaining tax liability. :contentReference[oaicite:4]{index=4}

Examples of individual tax credits

• Earned Income Tax Credit for qualifying workers and families.
• Child Tax Credit for taxpayers with qualifying children.
• Child and Dependent Care Credit for certain qualifying care expenses.
• Education credits for qualifying higher-education expenses.
• Retirement savings-related tax benefits for eligible taxpayers.
• Certain clean vehicle and home energy-related tax benefits when eligibility requirements are met.

How tax withholding works

Federal income tax is generally a pay-as-you-go tax. Employees usually pay it during the year through withholding from their paychecks. Self-employed individuals and others without enough withholding may need to make estimated tax payments.

Your employer uses information from your Form W-4 along with payroll information to determine federal income tax withholding. The IRS recommends checking withholding when tax laws or major life circumstances change. :contentReference[oaicite:5]{index=5}

When should you review withholding?

• You start or stop a job.
• You get married or divorced.
• You have a child or another major dependent change.
• You start a second job or your spouse starts or stops working.
• You receive substantial income that is not subject to normal paycheck withholding.
• Tax laws or your personal deductions or credits change.

Taxes that can appear on your paycheck

Federal income tax is only one part of the deductions that may appear on a paycheck. Your payroll statement can contain several different taxes and deductions.

This is why your gross pay can be substantially different from your take-home pay.

How to prepare for filing taxes

Filing your tax return becomes easier when you collect the necessary information before starting. The exact documents you need depend on your income, deductions, investments, family situation, and other circumstances.

• Gather your wage and income documents, such as Form W-2 and applicable Form 1099 documents.
• Review your filing status and dependent information.
• Gather records supporting deductions or credits you intend to claim.
• Review retirement contributions, health-related information, investment income, and other applicable tax documents.
• Compare your withholding and estimated payments with your expected tax liability.
• Keep copies of your return and supporting records.

Tax liability vs. tax withholding vs. refund

These three terms are often confused, but they describe different parts of the tax process.

Common tax mistakes to avoid

• Assuming your highest tax bracket applies to all of your income.
• Confusing paycheck withholding with your final tax liability.
• Forgetting income from a second job, freelance work, investments, or other sources.
• Treating a tax deduction and a tax credit as if they work the same way.
• Ignoring changes in withholding after a major life event.
• Using outdated tax brackets or deduction amounts for the current tax year.

Taxes FAQ