Navillus1968 wrote: ↑Sun Mar 19, 2023 11:04 pm
OP's friend is forgoing $1350/month for 15 months= $20,250.
At 70, her benefit will be $1350 x 1.1= $1485/month.
Breakeven number of months after 70: $20,250/1485= 13.6 months.
The break even analysis you performed is fatally flawed.
Your numbers only show how long it takes to earn what they would have earned up until age 70. It then ignores that they would have continued to earn that in the 13.6 months that you claim achieves break even.
The real break even is 12.5 years (150 months) . $20,250 / ($1485- $1350) = 150 months.
Cheers