Thanks for the insight sol, but when did this start happening? Was it after $600k, $500k, or more?
That depends on your savings rate, doesn't it?
If you're saving half of your income and make 10% on your investments, then a 1% daily market fluctuation on your invested nut will exceed your monthly expenses in year six.
year income nut spent/mo 1% flux 50% savings rate
1 100,000 55000 4167 550
2 100,000 115500 4167 1155
3 100,000 182050 4167 1821
4 100,000 255255 4167 2553
5 100,000 335781 4167 3358
6 100,000 424359 4167 4244
If you have an 80% savings rate, then it's in year two.
year income nut spent/mo 1% flux 80% savings rate
1 100,000 88000 1667 880
2 100,000 184800 1667 1848
If you have a 20% savings rate, then it's in year thirteen.
year income nut spent/mo 1% flux 20% savings rate
1 100,000 22000 6667 220
2 100,000 46200 6667 462
3 100,000 72820 6667 728
4 100,000 102102 6667 1021
5 100,000 134312 6667 1343
6 100,000 169743 6667 1697
7 100,000 208718 6667 2087
8 100,000 251590 6667 2516
9 100,000 298748 6667 2987
10 100,000 350623 6667 3506
11 100,000 407686 6667 4077
12 100,000 470454 6667 4705
13 100,000 539500 6667 5395
13 100,000 615450 6667 6154
13 100,000 698995 6667 6990
I've assumed uniform income over this period, but you could just as easily modify the income column with an assumed inflation rate. I've also assumed 10% investment return per year, which is conservative for the past eight years but slightly higher than the long term average. Again, you could modify the "nut" column to reflect an assumed arbitrary return percentage on investment per year, instead of just a fixed 10% each year.
Also note that the salary you put in per year is irrelevant. At a 50% savings rate, it's year six regardless of whether you make 100k or $1 per year, because it's only a matter of percentages.
Spreadsheets are fun!