2017 / 2018 Tax Calendar for Businesses

The IRS provides these handy calendars:

The Tax Calendar for Businesses and Self Employed shows due dates by month.  You may also filter by event type.

If you wish to have reminders sent to your by email, follow these instructions.

You may also install a Desktop Calendar Tool.

Or download the IRS Outlook Tax Calendar.

 

Income Tax Calendar

December 15, 2017 C Corporations – deposit the fourth installment of estimated taxes for 2017.

 

January 31, 2018 All businesses –
  • If required, provide 1099 statements to businesses and/or individuals.  This includes payments made by the trade or business for rent, royalty, interest, services or other payments when the amount paid to the party is greater than or equal to $600.  Form 1099 is not required to be remitted if the recipient is incorporated.  To determine if you are required to file Form 1099, please see the IRS article on the subject.

 

All businesses subject to reporting individual health coverage – this is the deadline to provide employees with Form 1095-B or Form 1095-C. See the IRS article to determine if you are subject to the health care filing requirement.

 

March 15, 2018 S Corps – File Form 1120S for calendar year.  Furnish Schedule K-1 to each shareholder.  For automatic 6-month extension, file Form 7004.

 

Partnerships – File Form 1065 for calendar year 2017.  Furnish Schedule K-1 to each partner.  For automatic 6-month extension, file Form 7004.

 

April 17, 2018 C Corporations – File Form 1120 for calendar year and pay any tax due.  For automatic 6-month extension, file Form 7004 and deposit estimated tax.

 

June 15, 2018 C Corporations – deposit second installment of estimated taxes due for 2018.

 

September 17, 2018 C Corporations – deposit third installment of estimated taxes due for 2018.

 

S Corporations – File Form 1120S if you timely requested a 6-month extension for tax year 2017.

 

Partnerships – File Form 1065 if you timely requested a 6-month extension for tax year 2017.

 

October 15, 2018 C Corporations – file Form 1120  if you timely requested a 6-month extension for tax year 2017.

 

Employer Federal Payroll Taxes

Find Federal Employer Withholding Tax due dates here.

 

 

Employer Ohio Payroll Taxes

Ohio Form IT-501 – Employer’s Payment of Ohio Tax Withheld

 

Quarterly filers Payment is due the last day of the following month.
Monthly filers Payment is due the 15th day of the month following the end of the quarter.

 

Ohio Form IT-941 – Ohio Employer’s Annual Reconciliation of Income Tax Withheld

All filers Due January 31st

 

Employer Municipal Withholding Tax

 

Monthly Filers

 

Businesses with annual municipal taxes withheld over the previous year that exceeded $2,399 or exceeded $200 in any month during the previous quarter.

 

Payment is due on the 15th day of the month following the month in which the tax was withheld.

 

Quarterly Filers Businesses with annual municipal taxes withheld between $200 and $2,399 over the previous year.

 

Payment is due on the 15th day of the month following the end of the quarter.

 

Annual Filers Businesses with estimated annual municipal tax liability under $200.

 

 

Exception Some municipalities may require an employer which withheld $12,000 or more in the preceding calendar year or more than $1,000 in any month of the preceding calendar year in their respective municipality to file on a semi-monthly basis.

 

Due dates for the semi-monthly filers are 3 banking days after the 15th of the month and 3 banking days after the end of each month.

 

For more information on municipal taxes, see our article on House Bill 5.

 

Employer School District Withholding Tax

Form SD 101 – Employer’s Payment of School District Taxes Withheld

Quarterly filers Payment is due the last day of the month following the end of the quarter.
Monthly filers Payment is due the 15th day of the following month.

Form SD 141- Employer’s Annual Reconciliation of School District Income Tax Withheld

All filers Due January 31st

 

Ohio Commercial Activity Tax

Quarterly Filers Businesses with annual taxable gross receipts in excess of $1 million must file and pay returns on a quarterly basis.

1st Quarter – Due May 10
2nd Quarter – Due August 10
3rd Quarter – Due November 10
4th Quarter – Due February 10

Annual Filers Businesses with taxable gross receipts between $150,000 and $1 million in a calendar year must pay the annual minimum tax.

Due date – May 10

For more information on Ohio’s CAT Tax, see the Ohio Department of Taxation’s article.

 

Sales Tax

Monthly Filers For vendors and sellers whose tax liability per six-month period is $1,200 or greater.

Monthly sales tax returns are due by the 23rd of the month following the period being filed.

Semi-Annual Filers For vendors and sellers whose tax liability is less than $1,200 per six-month period.

Semi-annual returns are due on Jan. 23 and July 23 for the previous six-month filing periods.

See the article on the Ohio Department of Taxation website for additional information.