top of page
Jamie Cho

What are the key tax deadlines for small businesses?

Do you know the key tax deadlines for your small business? Staying informed and organized can help you avoid costly penalties and streamline your financial planning.


Managing a small business comes with many responsibilities, and keeping track of tax deadlines is one of the most critical tasks. Missing these deadlines can result in penalties, interest, and even disruptions to your operations, potentially impacting your bottom line. Each tax deadline corresponds to a specific obligation, whether it's filing income tax returns, paying quarterly estimated taxes, or submitting payroll reports.


How to know your business tax deadline, What are the key tax deadlines for small businesses? Business taxes, Form 1120S, Form 1065, Form 568, Form 1120, Scorp, S-Corp, LLC, C-corp, sole proprietorship, small business taxes, business tax planning, business planning, business deadlines, business tax deadlines, Tax and Ledger Professionals, TLP, Tax, Payroll, Accounting, Escondido, San Marcos, San Diego, California

What are the key tax deadlines for small businesses?

Small business owners must adhere to several important tax deadlines throughout the year to remain compliant and avoid penalties. These deadlines vary depending on the type of business entity, payroll obligations, and whether estimated taxes apply.


The most critical dates to keep in mind:

  • Quarterly Estimated Taxes:

    • Due on April 15th, June 15th, September 15th, and January 15th of the following year.

    • Required for businesses that do not have taxes automatically withheld, such as sole proprietorships, partnerships, and S-corporations.

  • Federal Income Tax Returns:

    • Sole proprietors and single-member LLCs file by April 15th.

    • Partnerships and multi-member LLCs file by March 15th.

    • S-corporations and C-corporations also file by March 15th, unless on a fiscal year schedule.

  • Payroll Taxes (Form 941 or 944):

    • Typically due on the last day of the month following the end of the quarter.

    • Employers may also have monthly deposit requirements depending on their payroll size.

  • Annual Information Returns (Forms 1099 and W-2):

    • W-2s and 1099s must be issued to employees and contractors by January 31st.

  • Copies must also be submitted to the IRS by the same deadline.

  • State-Specific Deadlines:

    • Deadlines for sales tax filings, franchise taxes, or other state-mandated obligations vary widely by state and type of business.

  • Other Notable Deadlines:

    • Businesses that request an extension for filing their taxes must file Form 4868 (or Form 7004 for corporations) by the original due date of the return. Extensions typically allow an additional six months for filing but not for payment.


Who needs to worry about the key tax deadlines for small businesses?

Small business owners across all industries must pay close attention to tax deadlines, but the specific obligations and deadlines vary depending on the structure, size, and operations of the business.


  • Sole Proprietors and Single-Member LLCs:

    • Responsible for filing income taxes on Schedule C along with their personal tax return by April 15th.

    • Must also make quarterly estimated tax payments if they expect to owe at least $1,000 in taxes after subtracting withholding and credits.

  • Partnerships and Multi-Member LLCs:

    • Must file an annual information return (Form 1065) by March 15th, reporting the business's income, deductions, and other details.

    • Each partner receives a Schedule K-1 to report their share of income or loss on their personal tax return.

  • Corporations (C-Corps and S-Corps):

    • Required to file tax returns on Form 1120 or Form 1120S by March 15th (or the 15th day of the 3rd month after the fiscal year ends).

    • Must also ensure proper withholding and payroll tax deposits for their employees.

  • Employers:

    • Any business with employees must adhere to payroll tax deadlines, including depositing federal income taxes, Social Security, and Medicare taxes.

    • Form 941 (quarterly payroll report) or Form 944 (annual payroll report) deadlines must also be met.

  • Businesses Operating in Multiple States:

    • These businesses may need to navigate additional state-specific deadlines for income taxes, sales taxes, and franchise taxes.

  • Businesses with Independent Contractors:

    • Required to issue Form 1099-NEC to contractors by January 31st if payments exceeded $600 during the year.

  • Growing Businesses Seeking Extensions or Restructuring:

    • Businesses filing for an extension must meet the extension request deadline and ensure payment obligations are fulfilled.

    • Businesses undergoing structural changes (e.g., transitioning from an LLC to an S-corp) may encounter additional filing requirements.


What filings are needed at the key tax deadlines for small businesses?

Small businesses are responsible for multiple filings throughout the year, each serving a specific purpose to ensure compliance with federal, state, and local tax laws.


Here are the key filings required at different tax deadlines:

  • Federal Tax Filings

    • Form 1040 with Schedule C (Sole Proprietors):

      • Used to report income and expenses for sole proprietors and single-member LLCs.

      • Due by April 15th.

    • Form 1065 (Partnerships):

      • Required for partnerships and multi-member LLCs to report income, deductions, and distributions to partners.

      • Each partner receives a Schedule K-1 for personal tax reporting.

      • Due by March 15th.

    • Form 1120 (C-Corporations) and Form 1120S (S-Corporations):

      • Reports the corporation's income, deductions, and taxes owed.

      • Due by March 15th for calendar-year corporations or the 15th day of the 3rd month after the fiscal year ends.

  • Estimated Tax Payments

    • Form 1040-ES (Estimated Tax for Individuals):

      • Used to pay quarterly taxes for businesses with no automatic withholding, such as sole proprietorships and partnerships.

      • Due on:

        • April 15th

        • June 15th

        • September 15th

        • January 15th of the following year.

    • Form 1120-W (Estimated Tax for Corporations):

      • Corporations must use this form to calculate and pay quarterly estimated taxes.

  • Payroll Tax Filings

    • Form 941 (Employer’s Quarterly Federal Tax Return):

      • Reports income tax, Social Security, and Medicare tax withheld from employees' paychecks.

      • Due the last day of the month following the end of each quarter.

    • Form 944 (Employer’s Annual Federal Tax Return):

      • For small businesses with an annual payroll tax liability of $1,000 or less.

      • Due by January 31st.

  • Information Returns

    • Form 1099-NEC (Nonemployee Compensation):

      • Used to report payments made to independent contractors totaling $600 or more.

      • Must be sent to contractors and the IRS by January 31st.

    • Form W-2 (Wage and Tax Statement):

      • Reports wages, tips, and other compensation paid to employees.

      • Must be issued to employees and filed with the SSA by January 31st.

  • State and Local Filings

    • Sales and Use Tax Returns:

      • Monthly, quarterly, or annual filings depending on the state and sales volume.

    • State Income Tax Returns:

      • Deadlines vary by state and may align with or differ from federal deadlines.

  • Extension Requests

    • Form 4868 (Individuals) or Form 7004 (Businesses):

      • Requests a six-month filing extension.

      • Must be submitted by the original tax deadline for the return.


Failing to submit these filings on time can result in penalties and interest charges, making it critical for small businesses to stay organized and maintain a filing calendar. Always consult a tax professional to ensure compliance with all filing requirements specific to your business structure and industry.

When are taxes due for small businesses?

Tax deadlines for small businesses vary depending on the business structure, tax type, and specific obligations. Missing these deadlines can result in penalties and interest, so it’s important to stay organized and proactive.


  • Quarterly Estimated Taxes

    • April 15th: First-quarter estimated tax payment is due.

    • June 15th: Second-quarter estimated tax payment is due.

    • September 15th: Third-quarter estimated tax payment is due.

    • January 15th (of the following year): Fourth-quarter estimated tax payment is due.

  • Income Tax Returns

    • Sole Proprietors and Single-Member LLCs:

      • Due April 15th, filed with your personal tax return.

    • Partnerships and Multi-Member LLCs:

      • Due March 15th (or the 15th day of the 3rd month after the fiscal year ends).

    • S-Corporations and C-Corporations:

      • Due March 15th for calendar-year entities.

  • Extended Returns:

    • If you file for an extension, the deadline is six months from the original due date (e.g., October 15th for sole proprietors).

  • Payroll Taxes

    • Monthly Payroll Deposits:

      • Due by the 15th of the following month for employers required to deposit monthly.

    • Form 941 (Quarterly Payroll Tax Report):

      • Due on the last day of the month following the end of each quarter (e.g., April 30th, July 31st, October 31st, and January 31st).

    • Form 944 (Annual Payroll Tax Report):

      • Due January 31st for eligible small employers.

  • Information Returns

    • Forms W-2 and 1099:

      • Must be issued to employees and contractors by January 31st.

      • Copies must also be submitted to the IRS or SSA by this date.

  • State and Local Deadlines

    • Deadlines for sales taxes, franchise taxes, and other obligations vary widely depending on your state and local requirements.

  • Special Circumstances

    • Natural Disasters or Emergencies:

      • The IRS may extend deadlines for businesses in federally declared disaster areas.

    • Military or Combat Zones:

      • Business owners or employees serving in a combat zone may qualify for deadline extensions.


What is the timeline for small businesses?

To stay on top of your tax obligations, it’s helpful to follow a structured timeline that aligns with key deadlines and recurring tasks throughout the year.


  • January – February

    • Issue Forms W-2 and 1099-NEC to employees and independent contractors by January 31st.

    • File W-2s with the Social Security Administration and 1099s with the IRS by January 31st.

    • Submit Form 944 if your business qualifies for annual payroll tax reporting.

    • Organize year-end financial statements and gather documents for tax filing.

  • March – April

    • March 15th: File income tax returns for partnerships (Form 1065) and S-corporations (Form 1120S).

    • April 15th: File income tax returns for sole proprietors (Form 1040 with Schedule C) and C-corporations (Form 1120).

    • Pay the first-quarter estimated tax payment by April 15th.

    • Submit Form 4868 or Form 7004 to request an extension if needed.

  • May – June

    • Conduct a mid-year financial review to assess profitability and ensure estimated tax payments align with income.

    • Pay the second-quarter estimated tax payment by June 15th.

    • July – September

    • File quarterly Form 941 payroll tax returns for Q2 by July 31st.

    • Review payroll and employee benefits for compliance with tax laws.

    • Pay the third-quarter estimated tax payment by September 15th.

  • October – December

    • October 15th: File extended tax returns for individuals and businesses that filed for an extension.

    • File quarterly Form 941 payroll tax returns for Q3 by October 31st.

    • Conduct year-end tax planning, including reviewing deductions, retirement contributions, and potential tax credits.

    • Pay the fourth-quarter estimated tax payment by January 15th of the following year.

  • Ongoing Responsibilities

    • Stay compliant with state and local taxes, such as sales tax filings or franchise tax payments.

    • Maintain accurate financial records and monitor cash flow.

    • Keep updated on tax law changes that may impact your business.


Most common myths about the key tax deadlines for small businesses

Myth: Filing for an extension means I have more time to pay my taxes.

Reality: An extension only provides extra time to file your tax return, not to pay taxes owed. Any unpaid taxes after the original filing deadline will accrue interest and penalties. To avoid these charges, you must pay your estimated taxes by the original deadline.


Myth: Quarterly estimated taxes are only for large businesses.

Reality: Even small businesses and sole proprietors may need to make quarterly payments if they expect to owe at least $1,000 in taxes for the year. Neglecting these payments can result in underpayment penalties.


Myth: I can ignore state tax deadlines because I file federally.

Reality: State and local taxes operate independently of federal taxes. Sales tax, franchise tax, and other obligations often have different deadlines, and failing to meet them can result in penalties.


Myth: If I don’t make a profit, I don’t need to file taxes.

Reality: Even businesses that operate at a loss may need to file a tax return. Filing is essential to report your income and expenses and to carry forward losses to future years.


Myth: I only need to file taxes once a year.

Reality: Many small businesses have multiple tax deadlines throughout the year, including quarterly estimated payments, payroll taxes, and information returns. Staying on top of these deadlines is crucial to avoid penalties.


(FAQ) Frequently Asked Questions about the Key Tax Deadlines for Small Businesses

Question: What happens if I miss a tax deadline?

Answer: Missing a tax deadline can result in penalties and interest charges on any taxes owed. The IRS may impose a failure-to-file penalty, typically 5% of the unpaid taxes for each month or part of a month that a return is late, up to a maximum of 25%. It's crucial to file your returns on time or request an extension to minimize potential penalties.


Question: Can I get an extension on payroll tax filings?

Answer: Generally, extensions are not available for payroll tax filings like Form 941. These reports are due quarterly and must be filed on time to avoid penalties. If you anticipate difficulty meeting these deadlines, it's advisable to contact the IRS immediately to discuss possible solutions.


Question: Do I need to pay estimated taxes if my business is not yet profitable?

Answer: If you expect to owe at least $1,000 in taxes after subtracting withholding and credits, you should make estimated tax payments, even if your business is not currently profitable. Failing to do so may result in underpayment penalties. It's important to project your income and consult a tax professional to determine your obligations.


Question: Are tax deadlines the same for all business entities?

Answer: No, tax deadlines vary depending on the type of business entity you operate. For instance, sole proprietors and single-member LLCs typically file by April 15th, while partnerships and S-corporations have a March 15th deadline. Understanding your specific entity's requirements is essential for compliance.


Question: How do state tax deadlines interact with federal deadlines?

Answer: State tax deadlines can differ from federal deadlines and vary by state. Some states align with federal due dates, while others have their own schedules for income tax returns, sales tax filings, and other obligations. Always check with your state's tax agency to ensure you meet all local requirements.


More Reading


Final Thoughts

Navigating tax deadlines is one of the most critical responsibilities for small business owners. Missing deadlines can lead to penalties, interest charges, and additional stress, all of which can disrupt your business operations. By understanding the key dates, knowing which filings apply to your business, and creating a proactive plan, you can stay compliant and focus on what matters most—growing your business.


Remember, tax laws and deadlines can vary depending on your business structure, industry, and location. Consulting with a tax professional is the best way to ensure you’re meeting all your obligations and taking advantage of potential tax-saving opportunities. Staying informed and organized will not only help you avoid penalties but also give you peace of mind throughout the year.


Contact Us

We are here to help with any questions you have. Just give us a call.


Tax and Ledger Professionals, Inc

Email Address: info@taxtl.com

Phone Number: (760) 480-1040

Address: 365 W 2nd Ave, Escondido, CA 92025


About Us

For over 35 years, we've been the go-to for tax, accounting, bookkeeping, and payroll services that keep businesses running smoothly and lower individuals' and businesses' tax burden. See for yourself how we've transformed numerous businesses across San Diego and throughout the United States.


What do we prepare?

  • Income Taxes:

    • Individuals

    • Businesses

    • Estates and Trusts

    • Nonprofits

  • Foreign Tax Reporting

    • FBAR

    • 3520

    • 5471 & 5472

  • Payroll

  • Accounting and Bookkeeping

  • Business Consulting

    • Business Plans and Models

    • Fractional CFO






Σχόλια

Βαθμολογήθηκε με 0 από 5 αστέρια.
Δεν υπάρχουν ακόμη βαθμολογίες

Προσθέστε μια βαθμολογία
bottom of page