Income earned and saved would not be taxed until spent under the proposal. Households at the extreme high end of consumption often finance their purchases out of savings, not income. Economist Laurence Kotlikoff states that the FairTax could make the tax system much more progressive and generationally equitable, and argues that taxing consumption is effectively the same as taxing wages plus taxing wealth. A household of three persons (this example will use two adults plus one child; the rebate does not consider marital status) spending $30,000 a year on taxable items would devote about 3.4% of total spending ([$6,900 tax minus $5,888 rebate]/$30,000 spending) to the FairTax after the rebate. The same household spending $125,000 on taxable items would spend around 18.3% ([$28,750 tax minus $5,888 rebate]/$125,000 spending) on the FairTax. At higher spending levels, the rebate has less impact and the rate approaches 23% of total spending. Thus, according to economist Laurence Kotlikoff, the effective tax rate is progressive on consumption.