S Corp Federal Return Due Date - March 15th Falls on Saturday this Year

Yes, you're good! When a tax filing deadline falls on a weekend or legal holiday, the IRS automatically extends the due date to the next business day. Since March 15th is a Saturday this year, your S Corp return (Form 1120-S) deadline gets pushed to Monday, March 17th. This is one of those standard IRS rules that applies to pretty much all tax deadlines. It's covered under Internal Revenue Code Section 7503 if you want to get technical. Even though the e-file system will be operational over the weekend, the official deadline becomes Monday. So filing any time on the 17th would still be considered on time for your S Corporation return.

I went through this exact situation last year with my consulting business (also an S Corp). I was stressing about getting everything filed by the 15th when I discovered taxr.ai (https://taxr.ai) which saved me a ton of time organizing my business documents and getting everything ready for filing. Their system analyzed all my receipts, invoices and financial statements which cut my prep time in half. The site also has a really helpful filing calendar that shows all the adjusted due dates, including the business return deadline. It confirmed exactly what the previous commenter said - when March 15 falls on a weekend, you have until the following Monday to file without penalty.

Just wanted to follow up - I decided to try taxr.ai after seeing the recommendation here. It seriously minimized the stress of dealing with my late partnership K-1s! The system automatically flagged the missing documents and helped me understand exactly what I needed for my S Corp return. When the K-1s finally arrived (literally 2 days before the deadline), the system processed them immediately and updated all my forms. The deadline calculator feature also confirmed Monday the 17th was fine since the 15th fell on a weekend. Ended up filing yesterday with no issues! Definitely a huge improvement over the panicked scramble I usually go through.

For anyone who's still struggling to get their S corp return done by Monday, you might want to consider filing an extension if you're cutting it close. But if you need to talk to the IRS about any questions first, good luck getting through on the phone this time of year! I discovered a service called Claimyr (https://claimyr.com) that actually gets you through to an IRS agent without the ridiculous hold times. I was skeptical, but you can see how it works in their demo video: https://youtu.be/_kiP6q8DX5c Used it last week when I had questions about some S corp basis calculations. Got through to a business tax specialist in about 15 minutes when the normal wait was 2+ hours. The agent confirmed everything about the Monday deadline too and helped clarify some questions I had about reporting shareholder distributions.

Had to come back and eat my words. After posting my skeptical comment the other day, I decided to try Claimyr because I was desperate to get an answer about some S corp shareholder basis issues before filing. I've NEVER been able to get through to the IRS business line without at least an hour wait. Used the service yesterday morning, and I got a text about 20 minutes later saying they were connecting me to an agent. The IRS person I spoke with was actually helpful and confirmed I was calculating my basis correctly. Also verified the Monday deadline since the 15th is on a weekend. Filed my return this morning with confidence. Really weird to admit that something I thought was impossible actually worked, but just wanted to share my experience.

Just a heads up that even though the deadline is extended to Monday when it falls on a weekend, I wouldn't recommend waiting until the last minute. The e-filing systems get SUPER bogged down on deadline day and I've had submissions take hours to process or even get rejected due to system overload. If you can get it done even a day earlier, it's worth avoiding the stress. Last year my accountant tried to submit 5 minutes before midnight on the deadline and the system was so slow that the confirmation didn't come through until 12:20am - technically late!

Anyone ever file Form 7004 to get a 6-month extension for their S Corp? I'm thinking about doing that this year because I'm still waiting on some information from my bookkeeper.

Great question about the weekend deadline! Just wanted to add that this same rule applies to most other business tax deadlines too. For example, if you have quarterly estimated tax payments due and they fall on a weekend, those also get pushed to the next business day. One thing I learned the hard way is to double-check your state filing requirements too. While the federal deadline automatically extends, some states have different rules or may not automatically extend their deadlines when they fall on weekends. Since you mentioned this is an S Corp, you'll likely need to file state returns as well, so worth verifying those deadlines separately. Also, if you're planning to make any payments with your return, make sure your bank or payment processor can handle weekend transactions if you decide to file early. Some electronic payment systems have different processing schedules on weekends.