The information above regarding a 1041 filing is not correct. The $900 is not income generated by the estate. It is income in respect of decedent ("IRD") - earned but unrealized prior to death. Without meeting the "more than $600" threshold, there is no 1041 filing requirement. The $900 is to be treated as ordinary income on the income beneficiary's return, subject to deduction for any estate tax liability (which there appears to have been none). So, it's $900 that flows through to your 1040 and gets taxed at the resulting marginal rate. Further, if you remained unmarried, you can still file MFJ for the tax reporting period in which your husband passed.
Lastly, I am sorry for your loss. I deal a lot in probate and trust admin.
