Every business has to pay taxes, but paying taxes can get complicated when you miss some of the important deadlines throughout the year. It is important to have a reliable resource you can use to help you keep an accurate calendar of tax due dates throughout 2015 to make sure that you avoid any penalties for late payments.

January 15, 2015

This is the deadline to file estimated payments for the fourth quarter of 2014 for self-employed individuals.

January 20, 2015

This the date when the IRS officially begins processing all of the corporate and individual returns it has received up to that point. This is not the deadline for filing your return.

February 2, 2015

This is the official deadline for W-2 and 1099 forms to be postmarked and mailed.

February 17, 2015

This is the final day of the month for employees to file their tax exemptions forms with their employers that determine how much is withheld from their paychecks for federal taxes. This is also the date where all 1099-B forms (income received through stock transactions) and 1099-S forms (income received from buying or selling real estate) must be issued for 2014 by responsible organizations.

February 28, 2015

By this date, all companies who utilize independent contractors must have their 1099 and 1096 forms for 2014 submitted to the IRS.

March 17, 2015

Any corporation that uses the calendar year as its fiscal year must have its corporate tax returns filed by this date. This is also the deadline date for corporations that do use the calendar year as their fiscal year to file for a six-month extension for their corporate returns.

April 15, 2015

This is a busy day on the tax calendar as it is the date for self-employed people to file estimated tax payments for the first quarter of 2015, the deadline for filing and paying all 2014 personal income taxes, and it is also the last day to file an amended return for the 2011 tax year. This is also the filing deadline for any taxpayer looking for a six-month extension to submitting their 2014 return. This is also the date that sole proprietors, LLCs, and partnerships must file their corporate taxes.

May 15, 2015

This is the deadline for tax exempt organizations to either file their financial information or request a six-month extension.

June 1, 2015

By this date, all banks and other financial institutions must have distributed IRA account information for 2014.

June 15, 2015

This is the date for self-employed people to file estimated taxes for the second quarter of 2015.

June 30, 2015

This is the absolute deadline (there is no extension on this) for people with $10,000 or more in foreign bank accounts to file the necessary foreign bank statements with the IRS.

September 15, 2015

This is the date for self-employed people to file estimated taxes for the third quarter of 2015.

October 1, 2015

This is the absolute deadline for 1099 tax filers to set up a SIMPLE IRA for the 2014 tax year.

October 15, 2015

If you filed for an extension to your personal income tax return, then this is the deadline for filing your 2014 return.

December 31, 2015

For corporations that use the calendar year as their fiscal year, then this is the absolutely last day that any transactions can be made that have implications for the 2015 tax year. This is also the final day for personal income tax filers to make any changes to take any action that will affect their 2014 returns.

Bizwiki has a list of Tax Filing and Preparation Specialists in your area.