RBull - Your calculations are a little more complicated than Daniel's. Since you have less than 39 years of max contributions, although you'll get a higher % each year that you wait, your actual "calculated retirement benefit" decreases because of the extra year of zero earnings. I could still do precise calculations if you wanted to email me @
[email protected], but for now I can give you the following estimates, based on the equivalent of 30.4 yrs of max contributions (22 @ max, 10 @ 60% and 3 @ 80%):
At age 60, you could receive $586.29 (66.4% of $882.96); at age 61 $622.33 (72.16% of $862.43); at age 62 $660.78 (78.4% of $842.83); at age 63 $705.43 (85.6% of $824.10); at age 64 $748.14 (92.8% of $806.18) and at age 65 $789.23 (100% of $789.23).
Using the ages of 60 and 65 to compare, your breakeven calculation changes a bit from Daniel's. You could choose $586.29 at age 60 or delay until age 65 and receive $789.23. You would be passing up $35,177.40 ($586.29 x 60 mths) to receive $202.94 ($789.23 - $586.29) more monthly. It would take you approx 173.3 mths (14.4 yrs) to make up this amount, so your breakeven age would be 79.4 yrs old.