2021 Tax Deadlines For C-Corp Startups

The most important tax deadlines in 2021 for C-Corporation (C-Corps) are the April 15th federal Form 1120 tax return, which can be extended to October 15th, and the March, June, Sept and December Delaware Franchise estimated payments. See our detailed calendar below for other, important dates or download our ical to add the dates to your calendar.

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How Much Does a Startup Tax Return Cost? Try Kruze Consulting’s Tax Preparation Pricing Tool.


The 8 Most Important Startup Tax Deadlines

It’s unfortunate, but even early-stage, just founded companies can have compliance and regulatory filing requirements. And like it or not, it is very important to keep your company in compliance, because when that venture capital term sheet comes, or the M&A due diligence starts, you really want to make sure that you’re not sending negative signals and don’t do anything that might delay that transaction. Additionally, you open your company up to a lot of potential regulatory issues - you can lose your corporation, or get hit with a bunch of penalties or extra paperwork -  things that can distract you from building your company. 

So here are the most important compliance deadlines to keep track of:

  • W2’s to employees
  • 1099’s to all contractors
  • Delaware Franchise Fee
  • State Franchise Fees
  • Federal & State Returns/Filings
  • R&D Credit and related Studies
  • Municipal or City Filings
  • Sales Tax

Obviously this is a long list. But compliance really is a big deal. On average, one to three of our clients are acquired each and every month, and we know the types of questions that the accounting firms at big, public companies are going to ask about (you can access our free due diligence checklist here). And compliance is a big one! Don’t let a life-changing transaction get sidetracked by these types of issues. Of course, we recommend working with an experienced CPA like Kruze - talk to us now.


2020 Tax Compliance Deadlines For Delaware C-Corp Startups

2020 tax deadlines are supplied for reference purposes only, and should not be used when making decisions in 2021 or beyond. Always consult your tax professional, and see our disclaimer below. These are for Delaware C-Corporations. 

Attention: Many C-Corp tax deadlines for 2020 were moved due to the COVID crisis. Consult with your CPA.

How Much Does a Startup Tax Return Cost? Try Kruze Consulting Tax Preparation Pricing Tool.

If your Delaware C-Corp funded startup needs tax help contact us today!


2019 Tax Compliance Deadlines For Delaware C-Corp Startups

2019 tax deadlines are supplied for reference purposes only, and should not be used when making decisions in 2020 or beyond. Always consult your tax professional, and see our disclaimer below. These are for Delaware C-Corporations. 

Download iCalendar file Add to Google Calendar

View tax compliance dates for Atlanta, Austin, Boston, New York City, Palo Alto, Salt Lake City, San Francisco, Santa Monica, Seattle and Washington DC

How Much Does a Startup Tax Return Cost? Try Kruze Consulting's Tax Preparation Pricing Tool.

How much can your startup save in payroll taxes? Estimate your R&D tax credit using our free calculator.

Every startup is different and so are its tax compliance needs. This is only a guideline. Please consult your tax professional. IRS Circular 230 Disclaimer: To ensure compliance with IRS Circular 230, any U.S. federal tax advice provided in this communication is not intended or written to be used, and it cannot be used by the recipient or any other taxpayer for the purpose of avoiding tax penalties that may be imposed on the recipient or any other taxpayer. Copyright © Kruze Consulting

Check our 2020 Tax Deadlines For C-Corp Startups or Click for your customized tax compliance calendar by startup hub

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