@Camp1040 For NY to compute household credit correctly, you do need the spouse's Federal AGI because the credit for MFS is essentially half of that applicable if they were to file MFJ, based on the combined AGI.
@rcipullo The answer you need is in this article but the link is broken. Will ask an Intuit moderator to help update that article and give you some pointers.
@IntuitAustin The guidance the OP needs is in this article but the link is broken. Could you please provide some guidance in the meantime and arrange for that article to be updated? Thanks!
[Edit: Updated to include hyperlink to article.]
Still an AllStar