我用Excel算了一下,假设每年投资收益8% (SP500 过去30年平均年回报9-10%), 每年通胀2.5% (过去30年的平均)。 每年的SS benefit随通胀增加。我用Excel表算了下,break even的年龄是88-89岁!如果把投资收益降到7%,把通货膨胀增加到3%,break even的年龄能下降到83~84.
Annual Invest Ret 8% Inflation Rate 2.5%
Full Retirement $20,000 62 Reti $14,000
62 Retire 67 Retire Full SS Benefit
62 14,000 0 20,000
63 29,400 0 20,600
64 46,311 0 21,218
65 64,851 0 21,855
66 85,148 0 22,511
67 108,738 22,628 22,628
68 133,673 47,632 23,194
69 161,009 75,217 23,774
70 190,947 105,602 24,368
71 223,707 139,027 24,977
72 259,524 175,750 25,601
73 298,655 216,051 26,241
74 341,375 260,232 26,897
75 387,983 308,620 27,569
76 438,802 361,568 28,258
77 494,181 419,457 28,964
78 554,497 482,702 29,688
79 620,158 551,748 30,430
80 691,604 627,079 31,191
81 769,312 709,216 31,971
82 853,796 798,723 32,770
83 945,612 896,210 33,589
84 1,045,361 1,002,336 34,429
85 1,153,693 1,117,813 35,290
86 1,271,309 1,243,410 36,172
87 1,398,967 1,379,959 37,076
88 1,537,486 1,528,359 38,003
89 1,687,752 1,689,581 38,953
90 1,850,721 1,864,674 39,927
Zephyrca 写了: 2025年 6月 19日 17:58
提前领了能投资,但是后来领的能投资的基数大了。如果假设投资的回报率一样,等式的两边就可以消掉了。所以break even的岁数还是78.6