Replace the ALL personal credits/deductions with one big deduction of $30K, for adults only (over 18) since this amount covers child credits.

Tax everything over that amount at 35% (25% fed + 10% prov). Tax dividends and CPI adjusted capital gains (for assets held longer than a year) at 100%. (BTW, this would remove the distinction between capital gains and ordinary income.)

Pay an amount equal to the basic amount of $30K x the tax rate of 35%, i.e. $10,500 as basic income and claw it back at the same 35% rate. So by the time your income is $30K, it's all clawed back and you're not paying tax, and your tax rate continues to be 35% for amounts over that. The removes the disincentivizing clawback rates now inherent in today's welfare.

Note also that paying the basic amount as negative tax is exactly equivalent to making it transferrable betweeen spouses.

Also note that 10,500 is not as lucrative as the amount in Wynne's program, so there's more incentive to get out and supplement it.