The math on this is pretty straightforward for most investors. This is long term capital gains.
The historical average return is something like 10 % on equities.
So let us say our investor has 1,000,000 in the market. In one average year they will earn 100,000.
Now, inflation is roughly 3 to 4 percent on average. To keep the same buying power the principle will have to be increased to match inflation. 3.5% of 1,000,000 is 35,000. So
100,000 -35,000 == 65,000
Now, lets assume that the capital gains are taxed at 15% for the lowest earners (not including state taxes). So, we need to subtract out another 15,000.
70,000-15,000 == 50,000
There are additional fees and such for trading, having an account and trading. The average is about 2% or so.
50,000-2,000 == 48,000
Not bad, however it isn’t a boatload of money either.
Now, same math but at 30% tax.
100,000 - 35,000 = 65,000 - to keep up with inflation
65,000-30,000 = 35,000 - capital gains at 30%
35,000-2,000 = 33,000 - fees and such
Note, there are some costs which I am presently blanking on, so the actual number is a bit lower. And this isn’t including any taxes that the state may take out.
Now, if you are a billionaire then this isn’t a big deal. However, for the average ‘rich’ folks their worth is more along the lines of a million or two this tax increase can be a big hit.
Slee