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Form 100W Due Date Conformity with Form 1120-F who maintains office outside US

February 02, 2017 • Lionel Engelman • Log In to Post Comments


We have a calendar year end foreign C Corporation doing business in California who maintains the office outside US which we file Form 1120-F and 100W. It is my understanding that for the 2016 Form 1120-F, this return is due June 15, 2017. Lacerte says both Federal and California is due June 15, 2017. It is not clear whether California conforms to this same due date. The instructions for the Form 100W indicates the 15th day of 4th month ending the business year end. Does anyone know?  Thanks!


Both the 1120-F and the 100W form instructions are showing a due date of the 15th day of the 4th month after the close of the tax year (April 15 for calendar year taxpayers).  I'm unaware of any statutory amendment that made an exception for foreign corporations. You may want to give Lacerte a call.


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