Key Annual Filings & Tax Deadlines Every Small Business Owner Should Know for 2025

Tax season is here, and it’s the perfect time to get your business and finances in order. Staying on top of annual filings and tax deadlines is essential to keeping your business compliant and running smoothly. Proactive planning not only saves you time and money but also helps prevent unnecessary stress as deadlines approach. 

Read along as we guide you through the essential filings and tax deadlines that every small business owner should be aware of this year. 

The Importance of Annual Filings for Your Business

Annual filings are more than just a formality. They ensure that your business stays in good standing with state and federal authorities while avoiding costly penalties. Missing deadlines or submitting incorrect forms can lead to fines, late fees, and may even have legal consequences.  

Filing requirements will vary depending on the type of business, location (state), and specific state and federal regulations:

• Many states charge late filing fees for failure to submit annual reports on time, which can range from $25 to several hundred dollars.  
• At the federal level, businesses can also face steep penalties for late tax filings, that can quickly add up. 
• In some cases, non-compliance may even lead to revocation of business licenses or the dissolution of the company.  

By staying organized and meeting deadlines, you can prevent unnecessary setbacks and focus on growing your business instead of dealing with costly legal or financial issues. 

Now that you understand why fillings matter, let’s dive into what exactly needs to be done based on your business structure. 

Key Annual Filings Based on Business Structure 

Each business structure has different filing requirements. Let’s break down the essentials for each type: 

• Sole Proprietorships: A sole proprietorship is an unincorporated business owned by an individual.  
  • Tax Filing Requirement: File a Schedule C noting your business expenses and revenue along with your personal income tax return (Form 1040). 
  • Deductions: You can deduct common business expenses, such as office supplies, mileage, and other operating costs. 
• Limited Liability Companies (LLCs): An LLC is a business structure governed by state statutes. Requirements vary by state. In NYS, owners of an LLC are called members and unless otherwise elected, LLCs are treated as “pass through” or disregarded entities for tax purposes. 
  • Annual or Biennial Report: Most states require LLCs to file an Annual LLC Report. Be sure to check your state’s specific requirements. In New York, LLCs must file a Biennial Statement every two years to update the address for receiving legal documents. Learn more about how to file your Biennial Statement here.   
  • Tax Filing Requirement:
    • Form 1040 and Schedule C: If you have a single-member LLC, you will need to file Form 1040 (U.S Individual Income Tax Return) and include a Schedule C (Profit or Loss from Business) for reporting on the LLC’s income and expenses. 
    • Form 1065 and K-1 forms: If your LLC has multiple members, it will need to file Form 1065 (U.S. Return of Partnership Income). K-1 Forms should also be issued to each member to report their share of the business’ income or losses. 
• Corporations (S-Corp & C-Corp): This business structure is created by filing ‘Articles of Incorporation’ with the Secretary of State where the business is based. A corporation provides liability protection for the personal assets of its shareholders from business debts. There are two main types: 
  • C corporations: Pays taxes on their own income and may distribute profits in the form of dividends to shareholders, who would then pay income taxes on those distributions.
    • Must file Form 1120 (U.S. Corporation Income Tax Return) by April 15th or Tax Day each year. 
  • S corporations: Are considered pass-through entities for tax purposes and the profits and losses of the business pass through to its shareholders, who report them on their personal tax returns.
    • Must file Form 1120S by the 15th day of the third month after the tax year ends, usually March 15th each year. 
  • Shareholder and Director Reporting requirements (for both C & S Corporations): Make sure your corporation keeps accurate records of shareholder meetings and director positions to stay compliant. 

Understanding your business structure helps ensure you meet the specific filing requirements unique to your company. If you’re unsure about the requirements for your structure, consult a professional. 

Important Tax Deadlines You Can’t Afford to Miss 

Missing deadlines can result in penalties and fees, so it’s crucial to stay on top of these key dates:  

 January Deadlines

• 1099 Forms: If you paid contractors, 1099 Forms are due by January 31st.
• W-2 Forms: For employees, W-2 Forms must be sent out by January 31st. 

Quarterly Estimated Tax Payments

• These payments are due four times a year: April 15, June 15, September 15 and January 15 (of the following year) 
  • Tip: Setting aside estimated tax payments each quarter helps prevent a large, unexpected tax bill at the end of the year. 

Annual Filing Deadlines 

• Form 1120 (C-Corp) and Form 1120S (S-Corp) are generally due by April 15. 
• You can file an extension using Form 7004, which will give you until October 15 to submit your forms. 

State-Specific Deadlines 

• Don’t forget to check your state’s tax filing deadlines. Some states have different rules or additional requirements, so it’s important to stay informed.  Click here for more information on New York State deadlines for existing corporations and businesses.  

Beneficial Ownership Information (BOI) Reporting: Starting in 2024, businesses can file Beneficial Ownership Information (BOI) reports with the Financial Crimes Enforcement Network (FinCEN). This applies to most U.S. companies, including LLCs and corporations and is meant to ensure that the U.S. government has accurate information on who owns or controls a company. There have been frequent changes to the requirements for this report. For the latest updates, visit FinCEN’s website at https://fincen.gov/boi.

Proactive Tips for Staying on Top of Your Filings

To ensure compliance and a smooth filing season, follow these proactive steps: 

• Set Up a Calendar: Create a calendar with all the important deadlines for the year.  
• Keep Your Records Organized: Maintain a filing system for receipts, invoices, and tax-related documents. Having everything organized ahead of time will make the filing and reporting process much smoother. 
  • Pro Tip: Consider using accounting software to streamline your bookkeeping and make tax season less stressful. 
• Consult with Professionals: If your filings are complex, consider consulting with an accountant or tax advisor. They can help ensure you’re taking advantage of every deduction and avoiding costly mistakes.
• Act Now: Staying ahead of filing deadlines and completing required filings on time is crucial for keeping your business compliant. By staying organized, setting reminders, and proactively managing your business filings, you can avoid last-minute stress and position your company for success in the year ahead. 
  • The sooner you take action, the better prepared you’ll be. Review your business structure, check your filing deadlines, and make a plan for the year ahead.  

Resources

• IRS Website: https://www.irs.gov/  
• NY Department of State Biennial Statements for Business Corporations and LLCs: https://dos.ny.gov/biennial-statements-business-corporations-and-limited-liability-companies  
• FinCEN Beneficial Ownership Reporting: https://fincen.gov/boi 

 This communication is for the general education and knowledge of our readers. Because all legal problems involve their own specific set of facts, this informational resource is not and should not be used as a substitute for independent legal advice. This informational resource also is not intended to create, and its receipt does not constitute, an attorney-client relationship. Please contact competent, independent legal counsel for an assessment of your particular legal concerns, or contact us (using the information above) to determine whether you qualify for assistance from the City Bar Justice Center.