[Principled]

An "exclusive tax rate" on, of, or against income isn't possible.

Not in your feeble mind perhaps. But here it is... don't melt!

Earn $100,000 and keep $80,000 after tax. You can figure the rate more than one way silly.

1) amount of tax divided by the total INcluding tax (ie tax inclusive); 20k/100k=20%
2) amount of tax divided by the amount remaining EXcluding tax (tax exclusive); 20k/80k=25%

There is no one way to figure percentages. Both rates above are correct obviously. You can use either you wish.

Really, why do you get into the math anymore?

[lewislynn]

amount of tax divided by the amount remaining EXcluding tax (tax exclusive); 20k/80k=25%

A tax rate that excludes the tax?

20 is 25% of 80...so what, do I owe another $20.00? Using your exclusive income tax rate, how would I first calculate "the amount remaining"?...remaining from taxable income?...remaining from gross income?

I don't pay income tax on 100% of my income what's the remaining amount I divide by what tax rate to get your "exclusive tax"?...And since I know the real rate, why do I care?