SSDI income MFS in community property state

My husband has almost 40K in SSDI including back pay but no other income.  I have over 100k in W2 income.  We live in a community property state.  Not much in deductions/credits that we wouldn't get if MFS.  If we file separately, will the same amount of his SSDI income be taxable as if we MFJ, or will it not take that into consideration and none would be taxable?  Would it take my income into consideration if we MFS in a non-community property state?