When are business tax returns due for S-Corps?
S-Corporation tax returns are due on the 15th day of the third month after your fiscal year ends. For most businesses operating on a calendar year, that means March 15th. If the due date falls on a weekend or holiday, the deadline shifts to the next business day.
The March 15 deadline exists for a reason. S-Corps are pass-through entities, so the company itself doesn’t pay income tax. Instead, profits and losses flow through to shareholders via Schedule K-1. Those shareholders need their K-1s to complete their personal tax returns, which are due April 15. The one-month gap gives shareholders time to incorporate the S-Corp information into their individual filings.
You can request an automatic six-month extension by filing Form 7004 before the March 15 deadline. This moves your filing deadline to September 15. The extension is automatic, meaning the IRS grants it as long as you submit the form on time. However, an extension to file is not an extension to pay. If your S-Corp owes any taxes, perhaps from built-in gains or excess passive income, those amounts are still due March 15.
Late filing penalties for S-Corps are steep. The IRS charges $220 per shareholder for each month or partial month the return is late, up to 12 months. An S-Corp with three shareholders that files two months late owes $1,320 in penalties before any interest on unpaid taxes. This penalty applies even if no tax is due on the return itself.
Most S-Corps file extensions because gathering all the information needed for an accurate return takes time. There’s nothing wrong with extending as long as you actually file by September 15. What gets businesses in trouble is extending and then forgetting about the deadline entirely.
Business tax return preparation typically starts in January for calendar-year S-Corps. Your accountant needs time to review the prior year’s books, identify any adjustments, and prepare the return with enough lead time to address questions before the deadline.
If you have an internal bookkeeping team, make sure your financials are closed and reconciled by early February at the latest. Premium business accounting in Boca Raton includes the kind of month-end close discipline that makes tax season manageable rather than chaotic. Clean books throughout the year mean fewer surprises when it’s time to file.
State filing deadlines generally follow federal deadlines, but Florida S-Corps don’t file a separate state income tax return since Florida has no personal income tax. You may still have other state obligations depending on where you do business or where your shareholders reside.
Premium Controller & CFO Advisory Firm
Next Step:
Let's Talk About Your Business
Tell us about your business and your goals. We'll discuss how Jargo can support your financial operations and growth.
More Questions
How do I correct miscategorized transactions?
The correction method depends on when you catch the error. Same-period mistakes are simple reclassifications. Closed-period errors require adjusting entries that don't distort your current financials.
Read answerHow do real estate agents track commission income?
Track your net commission after the brokerage split, not the gross transaction amount. Record income when you actually receive payment, keep a pipeline of pending closings, and set aside 25-30% for estimated taxes.
Read answerHow do I reconcile bank statements from prior years?
Start with the oldest unreconciled month and work forward. Compare bank statements to your book balance, identify each discrepancy, and make adjusting entries. Errors compound over time, so working chronologically prevents fixing the same issue twice.
Read answerWhat is the penalty for sales tax audit findings in Florida?
Florida charges a 10% penalty on unpaid sales tax plus interest at the prime rate plus 4%. If the Department of Revenue determines fraud or willful negligence, penalties jump to 100% or 200% of the tax owed.
Read answerWhat's the ROI of hiring a fractional CFO?
ROI varies based on your situation, but businesses typically see returns through tax savings, better cash flow management, improved financing terms, and avoiding costly mistakes. The real value often comes from strategic decisions you wouldn't have made otherwise.
Read answerHow does pass-through taxation work for my LLC?
Pass-through taxation means your LLC doesn't pay federal income tax itself. Instead, profits and losses flow through to your personal tax return where you pay tax at your individual rate.
Read answer
