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Guide to Filing Business Taxes in the U.S. in 2025
Taxes

Guide to Filing Business Taxes in the U.S. in 2025

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Filing taxes for a business in the United States is essential for any company operating in the country. Whether you have an LLC, corporation, or another business structure, complying with tax obligations is crucial to avoid penalties and keep your business in good standing.

This guide outlines the main taxes businesses must pay, key deadlines for filing tax returns, and tips on effectively managing the tax process. It complements our guide on tax management and filing and is designed to help you comply with IRS and state regulations.

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1. Main Taxes a Business Must Pay in the U.S.

In the United States, businesses are subject to various taxes at both the federal and state levels. Here are the most relevant:

1.1 Federal Income Tax

This is one of the most important taxes and varies by business structure:

  • LLC: Generally, LLCs do not pay taxes directly. Instead, income “passes through” to the owners, who report it on their personal tax returns. However, LLCs may choose to be taxed as corporations if preferred.
  • C-Corporations (C-Corp): C-Corps are subject to a flat 21% rate on net income at the federal level. This tax is separate from shareholders' personal taxes, which can lead to double taxation when dividends are distributed.
  • S-Corporations (S-Corp): S-Corp income also passes through to the owners for personal taxation, thus avoiding double taxation. However, S-Corps have restrictions on the number of shareholders and other requirements.

1.2 State Income Tax

In addition to federal taxes, many U.S. businesses must also pay state income taxes, which vary by state. Some states, like Wyoming and Florida, do not impose corporate income taxes, while others, such as California and New York, have relatively high state rates. Reviewing each state's tax laws where your business operates is essential, as each may have unique regulations and rates.

1.3 Employment Taxes

If your company has employees, you are required to withhold and pay certain employment taxes, which include:

  • Social Security and Medicare (FICA): Both the company and employees must contribute to Social Security (6.2%) and Medicare (1.45%) on employee wages.
  • Unemployment Tax (FUTA): This federal tax helps fund unemployment benefits. The rate is 6% on the first $7,000 paid to each employee per year, although many employers qualify for a reduction. Generally, rates are also paid at the state level for Unemployment Insurance, and in those cases a 5.4% rate credit is obtained, leaving the federal obligation at 0.6%, equivalent to a contribution of US$42 per employee.

1.4 Sales Tax

Sales tax applies to the sale of taxable goods and services, which the business must collect from consumers and remit to the state. Rates vary by state and even by local jurisdiction. Companies selling physical products (and some services) in the U.S. must register to collect this tax and file periodic reports.

Some states, such as Delaware, impose no Sales Tax, while others, such as California, have rates that can exceed 8%.

1.5 Franchise Tax

Several states, including California, Delaware, and Texas, impose a Franchise Tax for the privilege of operating within the state. This tax is independent of the company's profitability and is generally based on the company's net asset value or gross income.

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2. When to File Business Taxes

U.S. businesses must meet specific deadlines for filing and paying their taxes to avoid penalties. Here are some key dates:

Federal Income Taxes

  • C-Corporations: Must file Form 1120 by April 15 if the fiscal year aligns with the calendar year. If the fiscal year is different, the filing is due on the 15th of the fourth month following the fiscal year-end.
  • S-Corporations and LLC Partnerships: Must file Form 1120S or Form 1065 by March 15.

Quarterly Filings and Withholdings

Businesses must file quarterly returns for employment tax payments using Form 941 for employee withholding and FICA contributions.

  • Quarterly Deadlines: April 15, July 15, October 15, and January 15.

Sales Tax Returns

Sales tax filing dates depend on the state and the business's sales volume. Some businesses file monthly, others quarterly, and some annually.

3. Tips for Optimizing Business Tax Filing

The U.S. tax system can be complex, but with proper planning, you can maximize your business’s tax benefits. Here are some key tips:

Take Advantage of Tax Deductions

Businesses in the U.S. can use various deductions to reduce their tax burden. Common deductions include:

  • Operating expenses: Rent, salaries, office supplies, and other daily operating costs.
  • Depreciation: Companies can deduct the cost of certain assets, such as machinery and equipment, over several years.
  • Business loan interest: Interest paid on business loans is also deductible.

Maintain Detailed Financial Records

Keeping accurate, organized financial records is essential to support any deductions or credits you claim. In the event of an IRS audit, having documents like invoices, receipts, and bank statements can simplify the process and prevent penalties.

Consider Specialized Tax Advice

Tax laws change frequently, and working with a tax advisor specializing in business can help you comply with regulations and maximize tax benefits. At Prodezk, we offer tax planning strategies to legally reduce your tax burden and ensure you meet all filing deadlines.

4. How We Can Help You File Your Business Taxes in the U.S.

  • Personalized Tax Advice: We help you understand and comply with federal, state, and local tax obligations.
  • Tax Filing: We handle all tax return preparations and filings for your business, ensuring compliance with deadlines.
  • Tax Optimization: We evaluate opportunities to reduce your tax burden through deductions, credits, and strategic tax planning.

Contact us for a free consultation and ensure your business taxes are managed correctly in the United States.

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David Suarez
Gerente de Marketing

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