The FairTax preserves the overall progressivity of the federal tax burden.
The FairTax not only lowers remaining average lifetime net tax rates, it also maintains and,
indeed, enhances overall progressivity in the tax system. Consider middle-aged married
households. The FairTax average lifetime tax rate is very low – only 1.5 percent – for the couple
with $20,000 in annual earnings, and much higher – 20.5 percent – for the couple with $500,000
in annual earnings. The reduction in the tax rate is proportionately much greater at the lower end
of the earnings distribution than at the high end. In switching to the FairTax, the $20,000-
earning couple experiences an 86 percent cut in their average tax rate, whereas the $500,000-
earning couple experiences a 42 percent cut.8
The FairTax: A very progressive long-run outcome
To get another meaningful picture of how persons in various income groups fare under the
FairTax in the aggregate, Dr. Kotlikoff models the dynamic macroeconomic and microeconomic
effects of replacing the income tax system with the FairTax.9
His model considers three income classes within each generation. It compares what the
economy is like under the FairTax versus what it would be like if the current system were to
remain in place. This approach gives a realistic view of the impact of America’s aging
population, coupled with high and growing health and pension benefits that necessitate much
higher payroll taxes, with potentially damaging effects on the U.S. economy. The FairTax offers
a solution to this dismal economic future.
The shift to the FairTax raises marginal labor productivity and real wages over the course
of the century by 18.9 percent and long-run output by 10.6 percent. Moreover, the FairTax
reduces by half the long-run increase in the effective rate of wage taxation needed to pay the
Social Security and health care benefits of an aging population. These macroeconomic gains
have important microeconomic welfare implications. In the long run:
• Low-income households experience a 26.7 percent welfare gain under the FairTax
• Middle-income households experience a 10.9 percent welfare gain
• High-income households experience a 4.7 percent welfare gain
This is a very progressive long-run outcome. (See chart below.)
Progressivity also marks the entire transition. Low-income households, which are
initially alive at the time of the reform, whether they are young, middle age, or old, all
experience welfare gains ranging from 8.3 to over 20 percent. Who pays for these gains? The
answer is hardly anyone. The initial rich elderly and rich middle aged, as well as some middle
age/middle-income households are somewhat affected, but their welfare losses are quite small
compared to the welfare gains experienced by the current poor and future generations.
In switching from taxing income to taxing consumption and adding high progressivity via
a rebate, the FairTax introduces many progressive elements into our fiscal system, removes one
very regressive element (the payroll tax), and provides much better incentives to work and save.
Switching to the FairTax raises long-run capital intensity, thus raising long-run real wages by 19
percent compared to the base-case alternative. The reform also generates major welfare gains for
the poorest members of society, including those now retired and those yet to be born.
In short, according to Dr. Kotlkoff’s analysis, the FairTax offers a real opportunity to
improve the U.S. economy’s performance and the well-being of the vast majority of Americans,
regardless of income and when they were born.
The chart below shows that in every age cohort, low-income persons experience the
highest increase in welfare (purchasing power), middle-income cohorts experience a positive
increase in welfare, but one less than the low-income cohorts, and finally that the high-income
cohorts born in 1970 or after experience a positive welfare gain that is less than both the lowand
middle-income cohorts. This is a very progressive outcome.