Social Security at 62 or 67

A represents income received starting at age 67

B represents income received starting at age 62

C represents income received from age 62 to age 67

D represents the number of months to break-even

MRA of 67 = A

(A-(A*30%)) = B

B*60 Months = C (number of months from age 62 to 67)

C / (A-B) = D

Plug in any numbers that you choose and calculate that it will take 140 months to reach the break-even point (also, 140 divided by 12 equal over 11 years)

Age 67 plus 11 equals 78.