Business Tax Forms

Look up any IRS form your business needs to file. Understand what each form requires, when it's due, and how to stay compliant.

What are business tax forms?

Business tax forms are IRS documents that companies use to report income, expenses, payroll, and other financial information to federal and state tax authorities. Every business — whether a sole proprietorship, partnership, LLC, or corporation — is required to file specific forms depending on its structure, size, and activities. These forms serve as the formal record of your tax obligations and are the basis for calculating what you owe or what refund you may receive. Understanding which forms apply to your business is the first step toward staying compliant and avoiding penalties.

Which tax forms does my business need to file?

The forms your business needs depend on its legal structure and activities. Sole proprietors typically file Schedule C with their personal return. Partnerships file Form 1065, while S corporations file Form 1120-S. All employers must file payroll forms like 941 (quarterly) or 944 (annually) and issue W-2s to employees. If you pay contractors $600 or more, you'll need to file 1099-NEC. Businesses claiming depreciation use Form 4562, and those with home offices may file Form 8829. International reporting requirements add forms like 5471, 5472, and 8865. The key is to identify every form that applies to your situation — missing one can trigger IRS notices and penalties.

Payroll and employment tax forms

Payroll tax forms are among the most common filings for any business with employees. Form 941 is filed quarterly to report income tax withholding and FICA (Social Security and Medicare) taxes. Small employers who owe $1,000 or less in annual payroll taxes may qualify to file Form 944 instead, which consolidates everything into one annual return. Form 940 reports Federal Unemployment Tax (FUTA), which is separate from state unemployment taxes. At year-end, employers issue Form W-2 to each employee and file Form W-3 to transmit all W-2 data to the Social Security Administration. Getting payroll forms right is critical — late or incorrect filings can result in significant penalties and interest.

Information returns: 1099s and beyond

Information returns are forms businesses use to report payments made to non-employees. The most common is Form 1099-NEC, used to report payments of $600 or more to independent contractors and freelancers. Form 1099-MISC covers other types of income like rents, royalties, and prizes. Form 1099-K is issued by payment processors and third-party networks to report transactions above the reporting threshold. Form 1096 serves as the transmittal summary when you're filing paper 1099s with the IRS. These forms are due to recipients by January 31 and to the IRS by the end of February (paper) or March 31 (electronic). Accurate information returns help avoid IRS backup withholding notices and keep your vendor relationships clean.

Tax Form Reference

Select a form for a full breakdown and filing guide.

Form

Title

W-2The Employer's Guide to Filing— Report wages and tax withholdings for employees Schedule SEWhat Business Owners Need to Know About Self-Employment Tax— Calculate self-employment tax for sole proprietors and partners Schedule CA Business Owner's Complete Guide— Report profit or loss from a sole proprietorship W-3The W-2 Transmittal Form Employers Need to Understand— Transmit W-2 information to the Social Security Administration SS-4How Your Business Applies for an EIN— Apply for an Employer Identification Number 8865US Business Owners with Foreign Partnership Interests— Report interests in foreign partnerships 8832Choosing Your Business's Tax Classification— Elect how your business entity is classified for tax purposes 8829Claiming the Home Office Deduction for Your Business— Calculate and claim the home office deduction 8594Allocating the Purchase Price When Buying or Selling a Business— Report asset acquisitions in a business purchase 5500The Employer's Annual Employee Benefit Plan Report— Report on employee benefit plans annually 5472Reporting Requirements for Foreign-Owned US Businesses— Report transactions between foreign-owned US corporations and related parties 5471US Business Owners with Foreign Corporations— Report information about certain foreign corporations 4562How Businesses Claim Depreciation and Amortization— Claim depreciation and amortization deductions 2553How to Elect S-Corp Tax Status for Your Business— Elect S corporation status for your business 2290Heavy Vehicle Use Tax for Trucking Businesses— Report and pay heavy highway vehicle use tax

Business structure and entity election forms

Your business structure determines which income tax return you file and how you're taxed. Form SS-4 is the starting point — it's how you apply for an Employer Identification Number (EIN), which you need before you can open a business bank account or hire employees. Form 8832 lets you elect how your entity is classified for tax purposes (e.g., choosing to be taxed as a corporation instead of a partnership). Form 2553 is used to elect S corporation status, which can provide significant tax savings by allowing owners to split income between salary and distributions. Form 8594 comes into play when buying or selling a business, requiring both parties to agree on how the purchase price is allocated across asset classes. Choosing the right structure — and filing the right election forms — can have a major impact on your tax liability.

Deductions, depreciation, and credits

Business deductions reduce your taxable income, and several IRS forms are dedicated to claiming them correctly. Form 4562 is used to claim depreciation and amortization on business assets — from equipment and vehicles to software and patents. It also covers Section 179 expensing, which lets you deduct the full cost of qualifying assets in the year they're placed in service, rather than spreading the deduction over multiple years. Form 8829 calculates the home office deduction for business owners who use part of their home regularly and exclusively for business. These deductions can significantly reduce your tax bill, but they require careful documentation. The IRS scrutinizes depreciation schedules and home office claims closely, so keeping detailed records of asset purchases, business use percentages, and home office measurements is essential.

International and foreign reporting requirements

US business owners with foreign interests face additional reporting obligations that carry steep penalties for noncompliance. Form 5471 is required for US shareholders of certain foreign corporations — the penalties for failing to file start at $10,000 per form. Form 5472 applies to foreign-owned US corporations and requires reporting of transactions between the corporation and its foreign related parties. Form 8865 covers US persons who own interests in foreign partnerships. These international forms are complex and often require detailed financial statements prepared under US GAAP or the tax basis of accounting. The penalty structure is aggressive by design — the IRS wants full visibility into cross-border transactions and foreign entity ownership. If your business has any international component, working with a tax professional who specializes in international reporting is strongly recommended.

Key filing deadlines for business tax forms

Meeting tax deadlines is non-negotiable — late filings trigger penalties that compound quickly. Partnership returns (Form 1065) and S corporation returns (Form 1120-S) are due March 15 each year, with a six-month extension available via Form 7004. Sole proprietor returns (Schedule C, filed with Form 1040) are due April 15. Payroll forms follow their own schedule: Form 941 is due quarterly (April 30, July 31, October 31, January 31), while Form 940 and Form 944 are due January 31 annually. W-2s and 1099-NECs must be furnished to recipients and filed with the IRS by January 31. The best practice is to build a tax calendar at the start of each year that maps every form to its deadline, including estimated tax payments, so nothing falls through the cracks.

Why Slash for business finance?

Slash gives you unlimited virtual and physical cards, real-time expense tracking, and built-in accounting integrations — so your financial operations run as smoothly as your tax filings.