Last updated: July 09 2013
According to Services Canada, this depends on your age and your years of residence in Canada.
If you fall into either of the categories below, you may be eligible to receive the Old Age Security pension:
Category 1 - People living in Canada
Category 2 - People living outside Canada
Note: As of July 1, 2013, Canadian seniors may choose to postpone receiving their Old Age Security for up to 5 years, resulting in a higher benefit later. You can elect to postpone OAS if you have already started to receive it. If you have been receiving your pension for less than six months, you may provide a written request to Service Canada to cancel your OAS pension. Caution: You will be required to repay the full amount of your OAS pension and any related benefits you received within six months from the day your cancellation request is granted. Speak with your tax professional to plan the correct options for you.