When Are S Corp Taxes Due
The tax obligations for an S corporation differ from those of traditional C corporations and sole proprietorships. Understanding the tax deadlines is crucial for S corp owners to ensure timely compliance and avoid penalties. This article will delve into the due dates for S corp taxes, offering a comprehensive guide for business owners and entrepreneurs.
Understanding the S Corporation Tax Structure

An S corp is a pass-through entity, which means it is not subject to the corporate income tax. Instead, the profits and losses of the corporation “pass through” to the shareholders, who report and pay taxes on their individual tax returns. This structure provides certain advantages, such as reducing the overall tax burden and offering flexibility in tax planning.
However, the tax responsibilities of an S corp are not limited to individual tax returns. The corporation itself has various tax obligations, including payroll taxes, employment taxes, and other federal and state tax requirements. Keeping track of these deadlines is essential to maintain good standing with the Internal Revenue Service (IRS) and state tax authorities.
Key Tax Deadlines for S Corporations

The tax due dates for S corporations can vary depending on the specific type of tax and the business’s fiscal year. Here is an overview of the primary tax deadlines that S corp owners should be aware of:
Federal Income Tax Returns
The due date for filing federal income tax returns for S corporations is typically March 15th of the year following the tax year. For instance, the tax return for the fiscal year ending December 31, 2023, would be due on March 15, 2024. This deadline applies to both calendar-year and fiscal-year S corps.
It's important to note that an S corp can request an extension of up to 6 months to file its federal income tax return. However, an extension does not grant additional time to pay taxes owed; any tax liability must still be paid by the original due date to avoid penalties and interest.
Estimated Tax Payments
As S corporations are pass-through entities, the shareholders are responsible for paying taxes on their share of the corporation’s income. To ensure that shareholders meet their tax obligations throughout the year, the IRS requires quarterly estimated tax payments.
The estimated tax payment deadlines for S corp shareholders are as follows:
- April 15th: First quarter estimated tax payment
- June 15th: Second quarter estimated tax payment
- September 15th: Third quarter estimated tax payment
- January 15th of the following year: Fourth quarter estimated tax payment
Shareholders must make these payments based on their expected tax liability for the year. Failure to make sufficient estimated tax payments can result in penalties and interest charges.
Employment Taxes
Employment taxes, such as Social Security and Medicare taxes, are another critical tax obligation for S corporations. These taxes are typically due on a quarterly basis, with the following deadlines:
- April 30th: First quarter employment tax return and payment deadline
- July 31st: Second quarter employment tax return and payment deadline
- October 31st: Third quarter employment tax return and payment deadline
- January 31st of the following year: Fourth quarter employment tax return and payment deadline
In addition to these quarterly deadlines, S corporations must also file annual employment tax returns, typically due on January 31st of the year following the tax year.
State Tax Deadlines
State tax deadlines can vary widely depending on the jurisdiction. S corporations must consult their state’s tax department to determine the specific due dates for income tax returns, estimated tax payments, and other state-specific tax obligations.
It's crucial for S corp owners to stay informed about their state's tax requirements to avoid penalties and ensure compliance.
Strategies for Meeting S Corp Tax Deadlines
Managing the various tax deadlines for an S corporation can be challenging. Here are some strategies to help S corp owners stay on top of their tax obligations:
- Establish a Tax Calendar: Create a comprehensive tax calendar that includes all relevant deadlines for federal, state, and local taxes. Mark these dates on your calendar or use tax management software to receive automated reminders.
- Work with a Tax Professional: Engaging the services of a tax professional, such as a CPA or tax attorney, can provide valuable guidance and support. They can help ensure that your tax obligations are met accurately and on time.
- Set Up a Payment System: Implement a system to make tax payments promptly. This could involve setting up automatic payments or using a tax payment service that can handle multiple payments throughout the year.
- Review Tax Obligations Regularly: Stay informed about any changes in tax laws or regulations that may impact your S corp. Regularly review your tax obligations and make adjustments as necessary to ensure compliance.
Conclusion
Understanding the tax due dates for S corporations is vital for business owners to navigate their tax obligations successfully. By staying informed about the various deadlines and implementing effective tax management strategies, S corp owners can ensure compliance, minimize penalties, and focus on the growth and success of their businesses.
FAQ

What is the penalty for late S corp tax filing or payment?
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Late filing or payment of S corp taxes can result in penalties and interest charges. The specific penalties depend on the type of tax and the amount owed. Generally, the IRS charges a 5% penalty per month for late filings, up to a maximum of 25%. For late payments, the penalty is typically 0.5% per month, with a maximum of 25%.
Can S corporations extend their tax filing deadline?
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Yes, S corporations can request an extension to file their federal income tax return. Form 7004 is used to request an automatic 6-month extension. However, as mentioned earlier, an extension does not grant additional time to pay taxes owed; the tax liability must still be paid by the original due date.
How often do S corp shareholders need to make estimated tax payments?
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S corp shareholders are required to make estimated tax payments quarterly. The deadlines are April 15th, June 15th, September 15th, and January 15th of the following year. These payments are based on the shareholder’s expected tax liability for the year.