Important Due Dates

(If Due Dates for Tax Returns or Extensions fall on a weekend or holiday then due date is the next business day)

 

Individuals

Tax Returns: April 15th

Extensions: 6 month Extensions expire October 15th

Estimated Tax Payments:

1st: April 15th

2nd: June 15th

3rd: September 15th

4th: January 15th (for previous tax year, i.e. pay 1/15/18 for 2017 tax year)

 

Partnerships

Tax Returns: March 15th

Extensions: 6 month Extensions expire September 15th

 

C Corporations

Tax Returns: April 15th (Calender Year End) or on the 15th day of the 3rd month after Fiscal Year End (i.e. Dec 15th for Sept 30 year end)

Extensions: 6 month Extensions expire October 15th

S Corporations 

Tax Returns: March 15th

Extensions: 6 month Extensions expire September 15th

 

Payroll Tax Returns

Quarterly:

1st Qtr: April 30th (for January-February-March)

2nd Qtr: July 31st (for April-May-June)

3rd Qtr: October 31st (for July-August-September)

4th Qtr: January 31st (for October-November-December)

Annual: January 31st

 

CA Sales Tax Returns

Quarterly:

1st Qtr: April 30th (for January-February-March)

2nd Qtr: July 31st (for April-May-June)

3rd Qtr: October 31st (for July-August-September)

4th Qtr: January 31st (for October-November-December)

Annual: January 31st

 

1099-MISC & 1096

1099-MISC to Vendors: January 31st

1099-MISC and 1096 to IRS: January 31st