My husband and I are filing joint federal returns and taking itemized deductions. For state returns, he is in the military (CA resident, stationed in VA) and is not required to file a CA state return. However, I am a VA resident and need to calculate a married filing separate federal return to do my state return.

How much of the itemized deductions (mortgage interest/real estate taxes) can I take since my husband is not required to file a state return? Although we have a joint account, mortgage payments/real estate taxes are paid out of his account and the 1098 is in his name.