So when I start to file if I am a qualified widow in 2019 what form do I change to? Filing Single? or jointly?

[asto-appraisal]

Is a qualifying widow the filing single for m or it is a joint form.  This would be the year after my husbands death.  He died in 2018?

[DoninGA]

If you have not remarried and do not have any qualifying children as dependents then your filing status is Single on your 2019 tax return.