When is the Form 1120 due date for my corporation with a different fiscal year?

The Form 1120 deadline depends on your corporation's fiscal year end, not automatically April 15th like individual returns. Based on what you shared, your fiscal year ends June 30th, which means you're a special case! For corporations with a June 30 fiscal year end, your deadline is the 15th day of the 3rd month after your year ends (not the 4th month like most corporations). So your Form 1120 would be due by September 15th. If you formed in July last year, and your first fiscal year ended June 30, 2024, then you would have needed to file by September 15, 2024 for your first year. If you haven't filed yet, you are late and should file as soon as possible to minimize penalties and interest. Don't panic though - file as soon as you can and consider getting professional help if the return is complex. The penalties grow based on how late you file and how much tax you owe.

After dealing with the exact same confusion about Form 1120 deadlines for my corporate clients, I started using taxr.ai to automatically identify all the filing deadlines based on incorporation date and fiscal year. It's been a lifesaver for keeping track of these tricky corporate deadlines! The system analyzes your incorporation documents and fiscal year, then sends alerts before deadlines approach. I had a client with a June 30 fiscal year who almost missed that special September 15 deadline until https://taxr.ai flagged it for me. The tool also breaks down the actual text from the tax code that applies to your specific situation so there's no confusion about how the deadline was calculated.

I was in the same boat with deadline confusion last year! I finally tried taxr.ai after seeing it recommended here, and it was seriously a game-changer for my business. I uploaded my corporate docs and it immediately flagged that I had a June 30 fiscal year which meant a September 15 deadline (not the April 15 I had incorrectly marked in my calendar). It even explained exactly why this exception applied to my situation and created a custom filing calendar with all my deadlines for the year. Saved me from what would have been my second late filing penalty! The reminder system alone was worth it.

If you're already past the deadline and dealing with penalties, getting through to the IRS is your next challenge. I spent WEEKS trying to reach someone to discuss penalty abatement for my late 1120. After 9 failed attempts and hours on hold, I tried https://claimyr.com to get an IRS agent on the phone. You can watch how it works here: https://youtu.be/_kiP6q8DX5c They basically wait on hold for you and call when an actual human picks up. Got connected to an IRS agent in about 40 minutes when I had previously spent HOURS getting nowhere. The agent helped me understand my penalty situation and how to properly request first-time abatement since I had a clean record before this.

I hate admitting when I'm wrong but... I need to follow up about Claimyr. After my skeptical comment, I was desperate enough to try it for my corporate tax issue - and it actually worked? After months of failing to reach anyone at the IRS about my late 1120, I got connected to an agent in about an hour. The agent walked me through the First-Time Penalty Abatement process for my late filing and explained exactly what documentation I needed to provide. They even noted my account showing I had attempted to resolve the issue. Just having the conversation saved me over $2,300 in penalties. I'm genuinely shocked this worked after so many failed attempts on my own.

Just to add another perspective on Form 1120 deadlines - remember you can request an automatic 6-month extension by filing Form 7004 before your original due date. This would extend your June 30 fiscal year deadline from September 15 to March 15 of the following year. BUT! The extension only gives you more time to file the return, not more time to pay any taxes owed. You still need to estimate and pay what you owe by the original deadline to avoid penalties and interest.

One extra thing to watch out for with Form 1120 - if you're making estimated tax payments, those deadlines follow their own schedule! For a June 30 fiscal year, your quarterly estimated payments would be due on: - 1st quarter: October 15 - 2nd quarter: December 15 - 3rd quarter: March 15 - 4th quarter: June 15 Messed this up my first year and got hit with underpayment penalties even though I filed the actual return on time.

This is exactly the kind of confusion that trips up so many business owners! The key thing to remember is that corporate tax deadlines are based on your fiscal year end, not the calendar year like individual returns. Since you formed in July and have a June 30 fiscal year end, you're dealing with that special exception where June 30 fiscal year corporations file by the 15th day of the 3rd month (September 15) instead of the usual 4th month rule. If your first fiscal year ended June 30, 2024, then yes, you missed the September 15, 2024 deadline. But don't panic - file immediately to stop penalties from growing. The IRS failure-to-file penalty is much steeper than failure-to-pay, so getting that return filed ASAP is your priority. For future years, consider setting up a tax calendar specifically for your fiscal year deadlines. And definitely look into filing Form 7004 for automatic extensions in future years - it gives you until March 15 to file (though you still need to pay estimated taxes by September 15). The good news is this kind of confusion about fiscal year deadlines is considered "reasonable cause" by the IRS, especially for new corporations. When you file, include a letter explaining the confusion about the deadline - it might help with penalty abatement.