Fernando is sixty-four years of age. He has been a business owner for more than twenty-five years. He is now working less, but continues to pay himself over $50,000 per year. He plans to retire in the near future and will pass on the business and all profits to his son Marco. Fernando has been notified that he will be eligible to receive Old Age Security benefits at the end of July. Since he is still receiving a salary and understanding that OAS benefits are taxable, he would like to defer receiving his OAS benefits until he retires.

How long can Fernando defer receiving his OAS benefits?