What are the key tax deadlines small business owners should know?

Small business owners must meet several important tax deadlines to stay compliant and avoid penalties. These include estimated tax payments, payroll deposits, annual filings, and reporting forms. 

Quarterly Estimated Taxes 

• Due: April 15, June 15, September 15, January 15 (following year) 

• Applies to self-employed owners and businesses without tax withholding. 

Payroll Tax Deposits 

• Deposits for federal income, Social Security, and Medicare taxes must be made monthly or semi-weekly, depending on payroll size. 

Annual Business Tax Filings 

• S Corporations (Form 1120-S): March 15 (March 17, 2025, since the 15th falls on a weekend) 

• C Corporations (Form 1120): April 15 

• Partnerships (Form 1065): March 15(March 17, 2025, since the 15th falls on a weekend) 

• Sole Proprietors (Schedule C): April 15 

Information Returns 

• W-2 Forms: Due January 31 to employees and the IRS 

• 1099-NEC Forms: Due January 31 to contractors and the IRS 

Tips 

• Keep a tax calendar with all deadlines. 

• Use SecurePayStubs to generate accurate pay stubs and track payroll taxes. 

• Consult a tax professional for guidance on state-specific deadlines.