Many on this post refer to taking SS at 70. Almost no one takes SS at 70. The percentage is between 1%-2%. So pretty much none of us will take SS at 70. We should discuss SS between 62 and FRA
The talk about 70 is for a couple of reason. 1) That's the age at which the increases stop, so there is no benefit to deferring after that. 2) The benefit is the largest value, so people who are impressed by large numbers in isolation are drawn to it.
Deferring to 70 seems to me kinda like optimizing a nullity. People who have enough assets that they can skip the SS benefits for 8 years -- have enough assets they they don't need the SS money at all, at
any age. And what's the point of optimizing something that doesn't matter?
I have a table in my SS spreadsheet, of breakeven periods. Delaying from 62 to FRA takes 12.0 years to break even. For either 66 or 67. That takes you to age 78 or 79. Likewise, delaying from 62 to 70 has almost the same BE time for either FRA. It's 10.5 or 10.4 years. That takes you to age 80 1/2.
At 70, I will take SS. I don't know where I could get a guaranteed 8% anywhere else.
This is the same error that people often make when looking at annuity payouts. You are not getting 8%. A portion of that payment is return of capital, which is not a gain.
The correct way to look at it is how much you pay for the extra you get.
For SS between FRA and 70, you get an extra $80/mo for each $1000/mo you give up. The first $1000 you get (at $80/mo at a time) is just a return of the $1000 you gave up. 1000/80 = 12.5.
It's as if you made a loan to the SSA. You loan them $1000 and they start paying you back $80 at a time. Each payment to you is part principal and part interest. It is incorrect to say that each payment is all interest, which is what you are saying if you say you are making 8%.
To figure out the actual rate you are making you can put the numbers into a loan calculator. Here's what I get:
If you live 20 years, the rate you got was 5.1%
If you live 15 years, the rate you got was 2.5%
If you live 12 years, the rate you got was 0.0%
If you live 13 years, the rate you got was 0.6%
If you live 30 years, the rate you got was 7.0%
If you live 40 years, the rate you got was 7.6%
The life expectancy of a 65 year old is 17 years. Add 10 year to that for longevity safety.
If you live 27 years, the rate you got was 6.7%
If you live 17 years -- right at the life expectancy -- the rate you got was 3.8%. Nothing wrong with getting 3.8%, but it's a far cry from the 8% that you erroneously thought you were getting.