Yes, all income is required to be reported on a married filing joint return (MFJ). Because you were married on December 31st, you have only two options in filing status which is married filing jointly or married filing separately (MFS). You no longer have the option to file single.
In most cases you would want to file as MFJ even if one spouse has little or no income. You receive the highest standard deduction of $12,600 and you each receive a personal exemption of $4,000.
Your marital status on December 31, 2015 is the critical date for determining your filing status for tax year 2015.
