Adding in the SALT deduction will not work. If you think about it you will see why.
In order for that to work you would have to use the sum of all government spending which Pew has also done. The reason you would have to use all of it is that unless you use a percentage of all taxes paid, deducted as SALT, you will arrive at an incorrect number.
That is why all of the reputable numbers do not reflect this.
I don't really care much about SALT anyway. It is a bit of a red herring. For example. In Arizona I am able to take a considerable number of specific charitable contributions, (Schools and charities for the working poor as examples) as a direct tax credit. Not deduction but a dollar for dollar credit. These contributions are then federal tax deductible as legitimate charitable contributions when I itemize. It is a bit of a legal scam but imagine if we take these numbers and play with them.
Let me point out your own state. Utah is the hands-down winner in charitable contributions mainly because of tithing to the Mormon Church. These contributions are deductible from federal taxes. I would not consider that a bad thing though those in other states could legitimately ask why they are subsidizing the Mormon church by paying a larger percentage of their income. Atheists could legitimately claim that their taxes are higher because they subsidize with their taxes (albeit a tiny amount) the proselytizing done by churches. We could also discuss the good work done with this money that reduces things like direct welfare payments and even health care. But then I see this stuff first hand and most people don't.
Clearly removing the SALT deduction was not an attempt at fairness and the republicans who make that claim are being disingenuous. As a real conservative my personal belief is that the federal government should not be involved in any direct subsidies to the states for welfare. The states should be required to raise their own money for that through state taxes. I would abolish, for example, the Department of Education and the Food Stamp program. States should handle these things themselves.
If you were a conservative instead of a big-spending Neocon you would oppose the obscene deficits raised by the new budget. And to be quite frank, you would take to the streets if your state tried to do this with its budget.
On edit.
I thought I would add a conservatives view on another aspect of this bill I touched on above. Conservatives believe that charitable giving is better than asking the government to step in. I agree. One way conservatives encouraged this was to allow charitable contributions to be deducted from income tax. Indeed they deliberately incentivized people for doing this. And not just rich people. Everyone who itemizes deductions was incentivized to do this. But these big-spending Neocons did just the opposite. Raising the standard deduction removes one incentive to donate for a great many people. Or at least to donate as much. One article said this:
The Tax Cuts Act simultaneously raises the standard deduction to $24,000 for a married couple. For millions it will no longer make sense to itemize, and that too means fewer charitable gifts: You can only deduct donations if you itemize.
Twenty years ago, the estate tax exemption was $600,000 for an individual — estates worth more than that were taxed. Next year, the exemption will be over $11.2 million for an individual. Whatever your views on estate taxes, it should be clear that exempting larger and larger amounts to lower the tax burden on heirs erodes the incentive to leave bequests to charity.
Whether it is a church or the food bank certainly the notion that one might deduct a goodly percentage of the donation will affect whether and how much we donate.
Yet we see above that the dis-incentive for the wealthy is particularly strong in estate planning. But for the very large number of Americans who deduct less than 24,000 per year from their taxes, the disincentive is a huge deal. And, by the way, the end of SALT deductions for many will greatly reduce the amount of money they have left to donate.
This tax bill is a disaster for charities and we have yet to see just how big it is. So much for the so-called conservatives encouraging charitable giving rather than government spending. Absent these contributions the local, state and federal authorities will simply have to step in.