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IRS Forms Library

The forms people actually file — explained in plain language: what each one does, who files it, when it is due, and the top errors that get it delayed, rejected, or penalized. Every form links to the official IRS PDF.

Education only — not personal tax advice. Personal questions route to a credentialed pro.

Figures verified against IRS sources · Tax-year tables 2016–2026 · Re-verified each season by the Update Engine · Last review: November 7, 2026

Form 1040

U.S. Individual Income Tax Return

IndividualFamilySelf-Employed

The main federal income tax return for individuals — the form almost every other schedule and credit flows into.

Form 1040-ES

Estimated Tax for Individuals

IndividualSelf-Employed

The voucher and worksheet for paying income tax in four quarterly installments when no employer withholds for you.

Form 1040-X

Amended U.S. Individual Income Tax Return

IndividualFamily

The form that changes a return you already filed — income, credits, filing status, dependents.

Form W-4

Employee's Withholding Certificate

IndividualFamily

The form that tells your employer how much federal tax to hold out of each paycheck.

Form W-7

Application for IRS Individual Taxpayer Identification Number (ITIN)

IndividualFamily

Applies for an ITIN — the tax-processing number for people who must file or be claimed but are not eligible for a Social Security number.

Form SS-4

Application for Employer Identification Number (EIN)

BusinessNonprofitSelf-Employed

Applies for an EIN — the tax ID number for a business, estate, trust, or nonprofit, used on payroll, banking, and entity returns.

Form 4868

Application for Automatic Extension of Time to File

IndividualSelf-Employed

Buys six more months to FILE your individual return — automatically, no reason needed.

Form 2553

Election by a Small Business Corporation (S Corporation)

Business

The election that makes an eligible corporation (or LLC electing corporate status) taxed as an S corporation, passing income through to the owners.

Form 2441

Child and Dependent Care Expenses

Family

Claims the Child and Dependent Care Credit — 20% to 35% of up to $3,000 of care expenses for one dependent ($6,000 for two or more) so you can work or look for work.

Form 8332

Release/Revocation of Release of Claim to Exemption for Child by Custodial Parent

Family

The custodial parent's signed release letting the noncustodial parent claim the child as a dependent and take the child tax credit.

Form 8379

Injured Spouse Allocation

FamilyResolution

Gets back your share of a joint refund that the Treasury took to pay your SPOUSE's separate debt (back child support, student loans, state tax, federal nontax debts).

Form 8857

Request for Innocent Spouse Relief

FamilyResolution

Asks to be relieved of tax, interest, and penalties from a joint return when your spouse (or former spouse) caused the problem and it would be unfair to hold you responsible.

Form 911

Request for Taxpayer Advocate Service Assistance

Resolution

Opens a case with the Taxpayer Advocate Service — the IRS's own independent help organization — when the normal system is causing you economic harm or has failed to resolve your problem.

Form 9465

Installment Agreement Request

ResolutionIndividual

Asks to pay a tax balance in monthly installments instead of all at once.

Form 433-A

Collection Information Statement for Wage Earners and Self-Employed Individuals

Resolution

The full financial disclosure the IRS uses to judge what an individual can actually pay — the foundation for offers in compromise, hardship status, and non-streamlined agreements.

Form 433-B

Collection Information Statement for Businesses

ResolutionBusiness

The business version of the collection financial statement — assets, receivables, income, and expenses the IRS uses to judge a business's ability to pay.

Form 656

Offer in Compromise

Resolution

Asks the IRS to settle a tax debt for less than the full amount, based on doubt as to collectibility (the common ground), doubt as to liability, or effective tax administration.

Form 843

Claim for Refund and Request for Abatement

ResolutionIndividualBusiness

Claims a refund or asks for abatement of certain taxes, penalties, and interest — for everything OTHER than income tax on a filed return.

Form 12277

Application for Withdrawal of Filed Form 668(Y), Notice of Federal Tax Lien

Resolution

Asks the IRS to WITHDRAW a filed tax lien notice — removing it from public record as if it had not been filed — in the limited situations where withdrawal is allowed.

Form 4506-T

Request for Transcript of Tax Return

IndividualResolutionBusiness

Requests FREE IRS transcripts — account, return, and wage & income transcripts that show what the IRS has on file for you, including income reported by employers and payers.

Form 4506-C

IVES Request for Transcript of Tax Return

Individual

The form lenders and other authorized participants in the IRS Income Verification Express Service (IVES) use to pull your tax transcripts with your signed consent — the document behind most mortgage income verifications.

Form 941

Employer's QUARTERLY Federal Tax Return

BusinessNonprofitSelf-Employed

Reports wages paid and income tax, Social Security, and Medicare tax withheld each quarter, reconciled against your payroll deposits.

Form 940

Employer's Annual Federal Unemployment (FUTA) Tax Return

BusinessNonprofit

Reports and pays the federal unemployment tax (FUTA) — 6.0% on the first $7,000 of each employee's wages, usually offset by up to 5.4% credit for state unemployment taxes paid on time.

Form 1096

Annual Summary and Transmittal of U.S. Information Returns

BusinessSelf-Employed

The cover sheet that transmits a batch of paper information returns (1099s and similar) to the IRS, summarizing the totals.

Form 1099-NEC

Nonemployee Compensation

Self-EmployedBusiness

Reports payments of $600 or more to independent contractors and other nonemployees for services — the form that tells a freelancer what the IRS already knows they earned.

Form 1099-MISC

Miscellaneous Information

BusinessSelf-Employed

Reports rents, royalties, prizes, medical payments, attorney gross proceeds, and other payments that do NOT belong on 1099-NEC.

Form W-2

Wage and Tax Statement

BusinessNonprofit

Reports each employee's annual wages and withholding — to the employee, the Social Security Administration, and the IRS.

Form W-3

Transmittal of Wage and Tax Statements

BusinessNonprofit

The summary cover sheet that transmits Copy A of all your W-2s to the Social Security Administration, with control totals that must equal the stack of W-2s beneath it.

Form 1120

U.S. Corporation Income Tax Return

Business

The annual income tax return for C corporations — revenue, deductions, and the flat 21% corporate tax.

Form 1120-S

U.S. Income Tax Return for an S Corporation

Business

The S corporation's annual return — the entity pays no federal income tax itself; income, losses, and credits flow to shareholders on Schedule K-1.

Form 1065

U.S. Return of Partnership Income

Business

The partnership's annual information return — income flows to partners on Schedule K-1 rather than being taxed at the entity level.

Schedule C (Form 1040)

Profit or Loss From Business (Sole Proprietorship)

Self-Employed

Reports the income and expenses of a one-owner business on the owner's personal return — where most freelancers and gig workers meet the tax code.

Schedule SE (Form 1040)

Self-Employment Tax

Self-Employed

Computes Social Security and Medicare tax (15.3% combined) on 92.35% of net self-employment earnings — the tax that replaces the FICA withholding employees split with an employer.

Schedule D (Form 1040)

Capital Gains and Losses

IndividualSelf-Employed

Summarizes sales of stocks, crypto, real estate, and other capital assets, applying the lower long-term capital-gains rates and the $3,000 annual loss limit against other income.

Form 8949

Sales and Other Dispositions of Capital Assets

IndividualSelf-Employed

The transaction-by-transaction listing behind Schedule D — each sale with its dates, proceeds, basis, and any adjustment code.

Form 1041

U.S. Income Tax Return for Estates and Trusts

BusinessIndividual

The fiduciary income tax return for estates and trusts — income is taxed to the entity or passed to beneficiaries on Schedule K-1 depending on distributions.

Form 990

Return of Organization Exempt From Income Tax

Nonprofit

The annual information return for tax-exempt organizations — governance, finances, and activities, open to public inspection.

Form 990-EZ

Short Form Return of Organization Exempt From Income Tax

Nonprofit

The shorter annual return for mid-sized exempt organizations — under $200,000 of gross receipts AND under $500,000 of total assets.

Form 720

Quarterly Federal Excise Tax Return

Business

Reports federal excise taxes — fuel, communications, air travel, environmental and other levies — and, from 2026, the 1% excise on cash-funded remittance transfers, which transfer providers report on this return.

Form 3520

Annual Return To Report Transactions With Foreign Trusts and Receipt of Certain Foreign Gifts

Individual

Reports large foreign gifts and bequests and transactions with foreign trusts. For most people it is an information return — no tax is due with it — but the reporting duty is real.

Form 8962

Premium Tax Credit (PTC)

FamilyIndividual

Reconciles the health-insurance Marketplace subsidy: the advance premium tax credit paid toward your premiums during the year is settled against the credit your final income actually allows.

Form 5695

Residential Energy Credits

Individual

Claims the residential clean energy credit (§25D — solar, batteries, geothermal) and the energy efficient home improvement credit (§25C) for work on your home.

⚠️ TERMINATED for property placed in service after Dec 31, 2025 — prior-year claims and amendments inside the window still use this form.

Before you send any of them

Run the Error Shield — filing status, dependent claims, and the final sweep catch the errors behind most rejections and letters. Got a letter back instead? Decode it. Missed years to fix first? The Unfiled Years Factory builds print-and-mail packets back to 2016.