IRS Forms Library

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Form 1040

U.S. Individual Income Tax Return

2.4M downloads

Form W-4

Employee Withholding Certificate

1.8M downloads

Schedule C

Profit or Loss From Business

980K downloads

Form 1099-NEC

Nonemployee Compensation

750K downloads

Form W-9

Request for Taxpayer ID

620K downloads

Schedule A

Itemized Deductions

540K downloads

Tax Calculators

Free tools to estimate your taxes and plan ahead

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Tax Refund Estimator

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Withholding Calculator

Check if you're having the right amount withheld

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Self-Employment Tax

Calculate SE tax on your freelance income

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Quarterly Estimate

Figure out your quarterly payment amounts

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2026 Tax Deadlines

Important dates you need to know

Q4 2025 Estimated Tax Due

January 15, 2026

quarterly

W-2 and 1099 Forms Due to Employees

January 31, 2026

employer

S-Corp and Partnership Returns Due

March 15, 2026

business

Individual Tax Returns Due

April 15, 2026

individual

Q1 2026 Estimated Tax Due

April 15, 2026

quarterly

Q2 2026 Estimated Tax Due

June 15, 2026

quarterly

Q3 2026 Estimated Tax Due

September 15, 2026

quarterly

Extended Returns Due

October 15, 2026

individual

Common Questions

Quick answers to frequently asked tax questions

When is the tax filing deadline?

For most individuals, the deadline to file your 2025 tax return is April 15, 2026. If you need more time, you can file for an automatic 6-month extension.

Do I need to file taxes?

Generally, you must file if your gross income exceeds certain thresholds based on your filing status. For 2025, single filers under 65 must file if they earn more than $14,600.

What documents do I need?

You'll need your W-2s, 1099s, Social Security numbers, last year's tax return, and receipts for deductions you plan to claim.

Should I take the standard deduction?

It depends on your situation. If your itemized deductions (mortgage interest, state taxes, charitable donations) exceed the standard deduction, itemizing may save you money.

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