The Canada Revenue Agency will be issuing the long-promised 'grocery rebate' payments to eligible Canadians on July 5. The food-inflation focused affordability measure is set to roll out to approximately 11 million low- and modest-income Canadians. Here's how much money those eligible can expect to receive.
I believe you are only eligible if you already receive GST quarterly.
Actually that’s not true. See https://www.canada.ca/en/revenue-agency/services/child-family-benefits/goods-services-tax-harmonized-sales-tax-gst-hst-credit/grocery-rebate.html
It’s different tax years. The amount is based on the Jan '23 GST credit you received, but whether you actually qualify is determined by your 2021 filings, so there are a few weird cases where you would get one but not the other.