Important Tax Deadlines
Calendar Year 2011
If any of the deadline dates listed below fall on a Saturday, Sunday or holiday, the following business day becomes the effective deadline date.
January 15
Fourth Quarter Estimated Payment Due for Individuals (Tax Year 2010)
January 20
Sales and Use Tax Due for Fourth Quarter (Tax Year 2010)
January 31
W-2's and 1099's Due to Recipients
Federal 941 Form Due
Federal Unemployment Tax Return Due
Federal Unemployment (940 Tax) Deposit Due
Maryland Unemployment Report Due
February 28
W-2's and W-3's Due to the Social Security Administration
1099's and 1096's Due to the Internal Revenue Service
March 15
Calendar Year Corporation Income Tax Returns or Extension Requests Due (Tax Year 2011)
April 15
Individual Tax Returns or Extension Requests Due (Tax Year 2010)
Calendar Year Partnership Trust & Estate Returns or Extension Requests Due (Tax Year 2010)
First Quarter Estimated Payment Due for Calendar Year Corporations and Individuals (Tax Year 2011)
April 20
Sales and Use Tax Due for First Quarter
April 30
Federal 941 Form Due
Maryland Unemployment Report Due
Federal Unemployment (940 Tax) Deposit Due
May 15
Calendar Year Exempt Organization Returns or Extension Requests Due (Tax Year 2010)
June 15
Second Quarter Estimated Payment Due for Calendar Year Corporations and Individuals (Tax Year 2011)
July 20
Sales and Use Tax Due for Second Quarter
July 31
Federal 941 Form Due
Maryland Unemployment Report Due
Federal Unemployment (940 Tax) Deposit Due
September 15
Extended Calendar Year Corporation, Partnership, Trust and Estate Tax Returns Due (Tax Year 2010)
Third Quarter Estimated Payment Due for Calendar Year Corporations and Individuals (Tax Year 2011)
October 15
Extended Individual Tax Returns Due (Tax Year 2010)
October 20
Sales and Use Tax Due for Third Quarter
October 31
Federal 941 Form Due
Maryland Unemployment Report Due
Federal Unemployment (940 Tax) Deposit Due
November 15
Extended Calendar Year Exempt Organization Returns Due (Tax Year 2010)
December 15
Fourth Quarter Estimated Payment Due for Calendar Year Corporations (Tax Year 2010)
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