According to the search results, the maximum Old Age Security (OAS) payment amount for 2023 depends on the recipients age and net income. For those aged 65 to 74, the maximum monthly payment amount is up to $707.68 if their net income is less than $142,609. For those aged 75 and over, the maximum monthly payment amount is up to $778.45 if their net income is less than $148,179. It is important to note that these are the maximum payment amounts and that the actual payment amount may be lower depending on the recipients specific income. Additionally, OAS benefits will increase by 1.3% for the October to December 2023 quarter, or 3.2% over the previous year, from October 2022 to October 2023, based on changes in the Consumer Price Index.