J.K. Lasser's Small Business Taxes 2017

CHAPTER 30 Filing Tax Returns and Paying Taxes

1. Income Tax Deadlines and Extensions
2. Online Filing of Business Income Tax Returns
3. Estimated Taxes
4. Making Tax Payments
5. Filing Other Business Returns
6. Using Tax Professionals

It's one of the facts of a business owner's life to file returns and pay taxes. The filing deadlines and tax payment rules for businesses and their owners may be different from those for individuals. Making sure you comply with filing and payment requirements is essential for avoiding unnecessary penalties and interest.

For more information about the electronic federal tax payment system, see IRS Publication 966, Electronic Federal Tax Payment System.

Income Tax Deadlines and Extensions

The date by which your business return must be filed depends on your type of entity and tax year. The information in Table 30.1 applies for 2016 returns to businesses reporting on a calendar-year basis.

Table 30.1 Filing Deadlines

Type of Entity	Income Tax Return	Return Due Date
Sole proprietorship	Schedule C (or C-EZ) of Form 1040	April 15
Partnership	Form 1065	March 15
Limited liability company	Form 1065	March 15
S corporation	Form 1120S	March 15
C corporation	Form 1120	April 15

Partnerships, limited liability companies, and S corporations must also furnish owners with a Schedule K-1 by the due date.

For corporations on a fiscal year ending other than June 30, the due date is 3½ months after the close of their fiscal year. For example, a C corporation ...