the maximum monthly GIS for the other spouse is $524.85. If the partner is not receiving OAS and the combined income is no more than $42,384, the individual will get some GIS; they will get the full $871.86 monthly GIS benefit if they have no other income. In the case of a couple making no more than $42,384 and where the spouse is receiving the Allowance, the maximum monthly GIS for the other partner is $524.85. For updated numbers, click here.