What are the benefits of gis for people? People are visual creatures. Intuitive, clear displays are enormously effective for decision making processes. GIS allows you to show all the layers of data you need at once, in a clean format.Who is eligible to apply for the gis? In order to be eligible for the GIS: 1 You must be receiving the basic OAS. 2 You must be resident in Canada. 3 Your income must be lower than the maximum allowed income levels. More ...When will the oas and gis benefits increase? Eligibility for the OAS pension and the GIS benefit will, over a six-year period, gradually increase from the age of 65 to 67, and be fully implemented by January 2029.How much will my gis payment be reduced? For the most part, your GIS payment is reduced from the maximum payable by 50 cents for every dollar of other income that you have (Note: Due to a couple of GIS “top-ups” that have occurred, there are income ranges where GIS is reduced by 75 cents for every dollar of other income).