Here is a “spaghetti on the wall idea”
I think there should be one fundamental tax rate “constitutional ceiling” that all other taxes must be set to with no more than 4 total categories.
For instance: Ceiling of 20% (Ceiling is set in the constitution to say 20% )
So you could have a 5% income tax, a 5% business tax, a 5% tariff (which is a tax) and a 5% sales tax.
Or you could have
a 10% income tax, a 1% business tax, a 5% tariff and a 1% sales tax. = total 17%
Or
a 10% income tax, 0% business tax, a 0% tariff and a 0% sales tax. = total 10%
That way if you want to tax income more, you cannot tax more than 20% total, but in order to increase ONE tax category you have to DECREASE another one!
Also limit the complete yearly spending of the fed gov to have a ceiling of say 10% of the economy output and NO MORE, unless congress declares war in which they have to renew the war declaration every year and it bumps it up to 20% total . If they need more money for the war they can only increase war spending by 5% per month (max of 25% total) and they have to do with a 3/4 vote in both houses EVERY MONTH and it expires at the end of each month!
Those promises would be broken.