When are 2018 Business Taxes Due?
Using your entity type, you can identify what your deadline is for filing business taxes and what it would be if you elect to take advantage of the extension, but you’ll also need to take weekends and federal holidays into account.
The following table covers when each type of business entity needs to file 2018 taxes in 2019 (using the calendar year):
| Partnership Tax Deadlines: | Due Date: |
|---|---|
| Original tax deadline for partnerships (Form 1065) | March 15, 2019 |
| Extension tax deadline for partnerships (Form 7004) | September 16, 2019 |
| S Corporation Tax Deadlines: | Due Date: |
| Original tax deadline for S Corporations (Form 1120S) | March 15, 2019 |
| Extension tax deadline for S Corporations (Form 7004) | September 16, 2019 |
| C Corporation Tax Deadlines: | Due Date: |
| Original tax deadline for C Corporations (Form 1120) | April 15, 2019 |
| Extension tax deadline for C Corporations (Form 7004) | October 15, 2019 |
| Sole Proprietor Tax Deadlines: | Due Date: |
| Original tax deadline for sole proprietors and individuals (Sch C, Form 1040) | April 15, 2019 |
| Extension tax deadline for sole proprietors and individuals (Form 4868) | October 15, 2019 |
| Nonprofit Tax Deadlines: | Due Date: |
| Original tax deadline for exempt organizations (Form 990) | May 15, 2019 |
| Extension tax deadline for exempt organizations (Form 8868) | August 15, 2019 |
What Flow-Through Entities (S Corps or Partnerships) Need to Do By Their Tax Deadline
If your business is a flow-through entity—S Corporation or partnership (LLC)—your taxes are due on the fifteenth day of the third month of your fiscal year or the fifteenth day of the ninth month if you file an extension. However, those entities get the name “flow-through” or “pass-through” because they do not pay income tax.
As a flow-through, your business’s income and losses get passed on to the partners, owners, and shareholders. So when your flow-through entity files a Form 1065 to the IRS, you must also issue Schedule K-1s to each partner or shareholder for them to report on their individual returns. For this reason, if you plan on electing to extend your tax deadline, be sure and let all partners and shareholders know so they can do the same!
What Individuals and C Corps Need to Do By Their Tax Deadline
As an individual (including sole proprietors) or corporation, your taxes are due on the fifteenth day of the fourth month of your fiscal year or the fifteenth day of the tenth month if you file an extension. This means you will file your taxes or an extension on April 15, 2019, and pay any tax liability you owe. If you ask for an extension, you will file taxes by October 15, 2019, but you will still need to pay taxes by April 15.
What Exempt Organizations (Nonprofits and Charities) Need to Do By Their Tax Deadline
As an exempt organization, such as a nonprofit or charity, you will file taxes on the fifteenth day of the fifth month of your fiscal year or the fifteenth day of the eighth month if you file an extension. For your 2018 return, you will need to file your taxes or an extension by May 15, 2019. If you ask for an extension, you will have until August 15, 2019 to file your return.
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