I need to file an extension ,my husband passed 2/1/19, he handled everything financial. do I check box for filing jointly?

[BurakG]

Yes, you have option to file jointly with your husband. 

[AnitaK]

First of all - deepest condolences for the loss of your husband. 

Here is a link with more information on your situation and how to file:

https://ttlc.intuit.com/replies/5964579