You can delay taking your benefits from your FRA up to age 70. Doing so will increase your benefit by ⅔ of 1 percent each month. Thus, you can receive the highest benefit payable on your record if you start collecting Social Security at age 70.
The SSA retirement age chart calculates how your monthly payout will be reduced by if you start receiving them early. It also shows that the reduction percentage decreases as your birth year approaches 1960.