chalu2, I'll try one more time...
You say: "I think the basic error is focusing on one $10,000 tranch of income..." No, this is the *ESSENTIAL POINT* of my argument, and it is not a "basic error".
Again, this is *precisely* the definition of a MARGINAL TAX RATE.
You say: "there are no conditions where taxes exceed income". Yes, that is true of *total* taxes and *total* income. I never said otherwise. You seem to be having trouble distinguishing between *total* versus *marginal*.
But, my point still stands for the $10,000 tranch of *incremental* income.
If the father (with 4 kids) got a $10,000 raise, then $7,100 would be lost to taxes.
If the father (with 7 kids) got a $10,000 raise, then $10,100 would be lost to taxes. He would lose all of his raise, and then some! Yes, his *total* taxes would still be less than his *total* income, but he would have lost *all* of his raise (i.e., his *incremental* income).
Finally, I have to say that I find your arguments that "most families are smaller" and "most people make well under 100K" to be extremely weak. Just because upper-middle-class large families are in the minority, does that mean it is "open season" to screw them on taxes with no mercy? I'm beginning to think so. |