California taxpayers generally use the same filing status for California that they do on their federal return. Although, there are exceptions. Which of the following is NOT an exception? A taxpayer who is an registered domestic partner (RDP), and who files single for federal tax purposes must file married/RDP filing jointly or married/RDP filing separately for California purposes. Taxpayers who file a joint federal income tax return may choose to file either joint or separate California returns if the taxpayer or spouse was an active duty member of the U.S. Armed Forces (or any auxiliary military branch) during the tax year. Taxpayers who file a joint federal income tax return may choose to file either joint or separate California returns if the taxpayer or spouse was a nonresident for the entire year and had no income from California sources during the tax year. Taxpayers who file a single federal income tax return may choose to file either joint or separate California returns