When is the extended federal filing deadline for a calendar year C-corp tax return?
Ask Blue J any tax question, then go deeper. Follow up, add client-specific context, and explore the sources behind every answer with Blue J’s generative AI solution for tax research.
For a calendar year C corporation, the original federal filing deadline for Form 1120 is the 15th day of the fourth month after the end of the tax year, which is April 15 for a calendar year taxpayer.
A C corporation can obtain an automatic 6-month extension of time to file its tax return by filing Form 7004 on or before the original due date. Therefore, the extended federal filing deadline for a calendar year C-corp tax return is October 15.
However, for tax year 2024 returns due in 2025, there is a special exception for corporations located in Florida and Georgia due to Hurricane Milton: for those corporations, the original deadline is postponed to May 1, 2025, and the extended deadline would be six months after that, or November 1, 2025.
In summary:
- Standard extended deadline for a calendar year C-corp: October 15, 2025.
- For C-corps in Florida and Georgia (due to Hurricane Milton): November 1, 2025.
Was this answer helpful?
What Blue J customers are saying
“We are excited to use Blue J to elevate the initial work product our team is able to produce."
"We’re incorporating Blue J to ensure our people are well-equipped with a research tool that delivers on both ease of use and quality of deliverable. It will save us a lot of time as a starting point, so we can focus our efforts on the analysis. Ultimately, it helps us get to the right answer, faster.”
"We’re incorporating Blue J to ensure our people are well-equipped with a research tool that delivers on both ease of use and quality of deliverable. It will save us a lot of time as a starting point, so we can focus our efforts on the analysis. Ultimately, it helps us get to the right answer, faster.”
"We had used Checkpoint for a long time but found it wasn’t particularly well-used in our practice."
"A lot of our practitioners would have to turn to Google to find what they were looking for, which of course isn’t ideal. Blue J is a real game-changer when it comes to this, since it combines the efficiency of Google with the authoritative tax materials our people really need to serve their clients best. At ELO, we pride ourselves on providing services that are focused on value for clients and exceeding their expectations. Adding Blue J to our toolbox will enable us to do just that, as we continue to evolve our service offerings to better serve our clients’ needs.”
"A lot of our practitioners would have to turn to Google to find what they were looking for, which of course isn’t ideal. Blue J is a real game-changer when it comes to this, since it combines the efficiency of Google with the authoritative tax materials our people really need to serve their clients best. At ELO, we pride ourselves on providing services that are focused on value for clients and exceeding their expectations. Adding Blue J to our toolbox will enable us to do just that, as we continue to evolve our service offerings to better serve our clients’ needs.”
"We find this tool to be a game-changer for us and our clients.”
“We had the opportunity to pilot some other AI solutions in the market, and found that the improvement over traditional search was limited - except in Blue J’s case, where the efficiency gain over traditional research methods is significant."
“We had the opportunity to pilot some other AI solutions in the market, and found that the improvement over traditional search was limited - except in Blue J’s case, where the efficiency gain over traditional research methods is significant."
“Blue J is an exciting technology because it enables the practitioner to remain in the driver’s seat of the analysis."
"Thoughtful functions are included to encourage and facilitate deeper analysis, not to replace or reduce it. We’ll continue to find new and impactful ways to leverage the technology, which has benefited our clients and staff alike. At RSM we strive to be compelling to our clients and to be digital by embracing new technologies to fulfill that promise.”
"Thoughtful functions are included to encourage and facilitate deeper analysis, not to replace or reduce it. We’ll continue to find new and impactful ways to leverage the technology, which has benefited our clients and staff alike. At RSM we strive to be compelling to our clients and to be digital by embracing new technologies to fulfill that promise.”
"We wanted to have a tool that people were using at all staff levels."
"We wanted something that lived up on their third screen - something that would be available and helpful to them every day. What we've found is it's been easy to get people to get into the habit of using Blue J because it helps people. Blue J allows us to quickly respond to client questions in a way that they can understand it, which helps us deal with the volume of client questions that come in. We were up and running very quickly with Blue J - within 5 minutes, our staff understood how this will be helpful, and the rest of the training program is refining prompting skills and building use cases and best practices."
"We wanted something that lived up on their third screen - something that would be available and helpful to them every day. What we've found is it's been easy to get people to get into the habit of using Blue J because it helps people. Blue J allows us to quickly respond to client questions in a way that they can understand it, which helps us deal with the volume of client questions that come in. We were up and running very quickly with Blue J - within 5 minutes, our staff understood how this will be helpful, and the rest of the training program is refining prompting skills and building use cases and best practices."
